This page has only limited features, please log in for full access.
The current study is to examine the differences in physical activity (PA), sedentary behavior (SB), and mental health (i.e., stress, depression, and suicidal behaviors) between early menopausal women and age-matched general middle-aged women. Among 1348 participants in South Korea, 674 participants who experienced menopause before the age of 45 were defined as the early menopausal group, and 674 women who experienced menopause from 45 years to 55 years were classified as the general group by matching age based on early menopausal women. PA, SB, and mental health were evaluated by using the Global Physical Activity Questionnaire (GPAQ). An independent t-test was used to compare the associations of PA, SB, and mental health between the two groups. To demonstrate the predictors of early menopause, variables in the study were analyzed by multinomial logistic regression. The main findings were that moderate-to-vigorous PA (MVPA) and light PA (LPA) had significant differences between the two groups, but SB had no significant differences. In mental health, only perceived stress had significant differences in this study. The moderate level of stress in the early menopausal group was twice as high as that of the general group, and the severe level of stress was even 2.6 times higher than the general group. PA plays an essential role in mitigating the causes of mortality and the risk of various chronic diseases and improving quality of life; thus, the main findings of this study could be important to provide insights on the corresponding impact between early menopausal women and PA to encourage their healthy lifestyle. Further longitudinal studies are needed to examine the mechanisms underlying the effects of PA, SB, and mental health on early menopausal women.
Ji-Su Kim; Ju-Pil Choe; Jeong-Hui Park; Eunhye Yoo; Jung-Min Lee. The Comparison of Physical Activity, Sedentary Behavior, and Mental Health between Early Menopausal Women and Age-Matched General Middle-Aged Women. International Journal of Environmental Research and Public Health 2021, 18, 7256 .
AMA StyleJi-Su Kim, Ju-Pil Choe, Jeong-Hui Park, Eunhye Yoo, Jung-Min Lee. The Comparison of Physical Activity, Sedentary Behavior, and Mental Health between Early Menopausal Women and Age-Matched General Middle-Aged Women. International Journal of Environmental Research and Public Health. 2021; 18 (14):7256.
Chicago/Turabian StyleJi-Su Kim; Ju-Pil Choe; Jeong-Hui Park; Eunhye Yoo; Jung-Min Lee. 2021. "The Comparison of Physical Activity, Sedentary Behavior, and Mental Health between Early Menopausal Women and Age-Matched General Middle-Aged Women." International Journal of Environmental Research and Public Health 18, no. 14: 7256.
This study examined the effects of resistance training on muscle quality, muscle growth factors, and functional fitness in older adult women with sarcopenia. Twenty-two older adult women aged over 65 with sarcopenia were randomly assigned to either resistance training (RT, n = 12) or non-exercise control group (CG, n = 10). The body weight-based and elastic band RT were performed three times a week, 60 min per session, for 16 weeks. Body composition and thigh muscle quality were estimated by dual-energy X-ray absorptiometry (DEXA) and computed tomography (CT), respectively. The muscle growth factors, including growth differentiation factor-8 (GDF-8), growth differentiation factor-15 (GDF-15), activin A, and follistatin, were analyzed via blood samples. Statistical analyses were performed using repeated measures multivariate analysis of variance (MANOVA), analysis of variance (ANOVA), and effect size (i.e., cohen’s d, partial eta square), and the significance level was set at 0.05. The RT group improved their functional fitness, grip strength, gait speed, and isometric muscle strength (p< 0.01, d > 0.99; large), while these variables did not change in the CG. An increase in intramuscular fat was only observed in the CG (p< 0.01, 1.06; large). Muscle growth factors such as follistatin were significantly increased in the RT (p< 0.05, 0.81; large), but other variables did not change following resistance training. Sixteen weeks of resistance training improved functional fitness and prevented age-related increases in intramuscular fat in the thigh area. However, there were only some changes in muscle growth factors, such as follistatin, suggesting that the effectiveness of resistance training on muscle growth factors is limited. Body weight-based and elastic band resistance training is an alternative training method for sarcopenia to minimize the age-related adverse effects on muscle function and quality.
Myong-Won Seo; Sung-Woo Jung; Sung-Woo Kim; Jung-Min Lee; Hyun Jung; Jong-Kook Song. Effects of 16 Weeks of Resistance Training on Muscle Quality and Muscle Growth Factors in Older Adult Women with Sarcopenia: A Randomized Controlled Trial. International Journal of Environmental Research and Public Health 2021, 18, 6762 .
AMA StyleMyong-Won Seo, Sung-Woo Jung, Sung-Woo Kim, Jung-Min Lee, Hyun Jung, Jong-Kook Song. Effects of 16 Weeks of Resistance Training on Muscle Quality and Muscle Growth Factors in Older Adult Women with Sarcopenia: A Randomized Controlled Trial. International Journal of Environmental Research and Public Health. 2021; 18 (13):6762.
Chicago/Turabian StyleMyong-Won Seo; Sung-Woo Jung; Sung-Woo Kim; Jung-Min Lee; Hyun Jung; Jong-Kook Song. 2021. "Effects of 16 Weeks of Resistance Training on Muscle Quality and Muscle Growth Factors in Older Adult Women with Sarcopenia: A Randomized Controlled Trial." International Journal of Environmental Research and Public Health 18, no. 13: 6762.
The current study examined the differences in health-related physical fitness (HRPF), physical activity (PA), and sedentary behavior (SB) between adolescents with and without ongoing respiratory diseases (RD). This study’s participants were from 12 to 15 years old (7th–10th grade) in South Korea. Adolescents with RD were selected through RD-related questions (i.e., asthma, rhinitis, sinusitis, and bronchitis) (n = 139); in contrast, adolescents without RD, randomly selected from the general group, responded to any health problem-related questions as “No” (n = 139). HRPF was measured based on the FITNESSGRAM and EURO FIT test batteries and the measurements of HRPF included cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. All statistical analyses were conducted by SPSS 25.0, and the independent t-test was used to compare the HRPF and PA between the two groups. Moreover, the measured HRPF was compared with a series of analyses of three-way ANOVAs (age × gender × group). Adolescents with RD had a positive association with less participation in PA (p< 0.05; RD: 3081.81 ± 4793.37; general: 2073.64 ± 3123.47) and with more time spent on SB (above 12 h per week: RD group (38.85%) and general group (33.09%)). Furthermore, adolescents in the RD group showed significant effects on all components of HRPF (p< 0.05). Our study confirmed that HRPF is an essential predictor of adolescents’ health outcomes, especially for those with RD. We suggest that increased HRPF can be an effective treatment for respiratory diseases in adolescents, and health practitioners should pay more attention to helping adolescents with RD to gain or maintain high HRPF.
Jeong-Hui Park; Myong-Won Seo; Hyun Jung; Jong-Kook Song; Jung-Min Lee. Association between Health-Related Physical Fitness and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study. International Journal of Environmental Research and Public Health 2021, 18, 6655 .
AMA StyleJeong-Hui Park, Myong-Won Seo, Hyun Jung, Jong-Kook Song, Jung-Min Lee. Association between Health-Related Physical Fitness and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study. International Journal of Environmental Research and Public Health. 2021; 18 (12):6655.
Chicago/Turabian StyleJeong-Hui Park; Myong-Won Seo; Hyun Jung; Jong-Kook Song; Jung-Min Lee. 2021. "Association between Health-Related Physical Fitness and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study." International Journal of Environmental Research and Public Health 18, no. 12: 6655.
The purpose of the current study is to investigate the changes in physical activity (PA), sleep time (ST), and body weight (BW) Pre- and during COVID-19 in South Korea, and specifically, PA data were obtained during COVID-19 at three-time points based on the multilevel social distancing policies. All data were surveyed by questionnaires online and offline, and participants were required to fill in the monthly average of daily step counts were recorded an application on participants’ smartphone devices from Pre-COVID-19 (2019 year) and during COVID-19 (2020 year). Participants were 834 adults (males: 54.4%, female: 45.6%) and all statistical analyses were summarized by SPSS 25.0 program. The monthly average of daily step counts was 6747.09 during Pre-COVID-19, but the PA during COVID-19 was 5812.11 daily step counts per month. Also, there were significant pairwise differences between average PA Pre-COVID-19 and each level of social distancing (p< 0.001). After COVID-19, the participants who slept less than 7 h decreased by 3.6%, while those who slept more than 9 h increased by that much. As a result of BW, 269 participants responded their BW changed during COVID-19, and 199 of them reported they gained BW during COVID-19 (74.0%). Although self-reported questionnaires may have led to an under-or over-estimation of ST and BW, the present study found that the environment in which the COVID-19 is prevalent had adverse relationships on PA, ST, and BW. Therefore, it is important to identify strategies to motivate individuals for remaining physically active and getting adequate sleep while maintaining social distancing due to the presence of the COVID-19 global pandemic.
Jeong-Hui Park; Eunhye Yoo; Youngdeok Kim; Jung-Min Lee. What Happened Pre- and during COVID-19 in South Korea? Comparing Physical Activity, Sleep Time, and Body Weight Status. International Journal of Environmental Research and Public Health 2021, 18, 5863 .
AMA StyleJeong-Hui Park, Eunhye Yoo, Youngdeok Kim, Jung-Min Lee. What Happened Pre- and during COVID-19 in South Korea? Comparing Physical Activity, Sleep Time, and Body Weight Status. International Journal of Environmental Research and Public Health. 2021; 18 (11):5863.
Chicago/Turabian StyleJeong-Hui Park; Eunhye Yoo; Youngdeok Kim; Jung-Min Lee. 2021. "What Happened Pre- and during COVID-19 in South Korea? Comparing Physical Activity, Sleep Time, and Body Weight Status." International Journal of Environmental Research and Public Health 18, no. 11: 5863.
The first aim of this study was to develop equations to predict physical activity energy expenditure (PAEE) for children utilizing heart rate monitors (HRM) and vector magnitudes (VM) from accelerometers. The second aim was to cross-validate the developed PAEE prediction equations and compare the equations to the pre-existing accelerometer-based PAEE equation (i.e., Trost). Seventy-five students in elementary school (from 10 to 13 years old) were classified into an equation calibration group (N = 50, 33 boys and 17 girls) and a cross-validation group (N = 25, 20 boys and 5 girls). Participants simultaneously wore a portable indirect calorimeter (Cosmed’s K4b 2), a heart rate monitor on the chest, and an accelerometer on the right side of the waist. Then, the participants performed a series of various intensity activities. The energy expenditure (EE) measured by K4b 2 was set as the dependent variable. Multiple regression analysis was performed to derive the heart rate and accelerometer-based equations. The heart-rate-based EE equation had an explanatory power of adj. R 2 = 0.814 and the accelerometer-based EE equation had an explanatory power of adj. R 2 = 0.802. The VM-based EE indicated high mean absolute percent errors (MAPE) at light, moderate, and vigorous intensity. The heart-rate-based EE was included in the range of equivalence limit in all activities, but the VM and pre-existing equation showed some overestimation beyond the equivalence range. The agreement errors between the criterion EE and the estimated EE were lower in the heart-rate-based equation than the accelerometer-based equations (i.e., VM and Trost). The approach with the heart-rate-based EE equation demonstrated higher accuracy than the accelerometer-based EE equations. The results of the current study indicate that the heart-rate-based PAEE equation can be a potential method for estimating children’s PAEE.
Mihyun Lee; Jeong-Hui Park; Myong-Won Seo; Seoung-Ki Kang; Jung-Min Lee. A New Equation to Estimate Energy Expenditure Using Heart Rate in Children. Sustainability 2021, 13, 5092 .
AMA StyleMihyun Lee, Jeong-Hui Park, Myong-Won Seo, Seoung-Ki Kang, Jung-Min Lee. A New Equation to Estimate Energy Expenditure Using Heart Rate in Children. Sustainability. 2021; 13 (9):5092.
Chicago/Turabian StyleMihyun Lee; Jeong-Hui Park; Myong-Won Seo; Seoung-Ki Kang; Jung-Min Lee. 2021. "A New Equation to Estimate Energy Expenditure Using Heart Rate in Children." Sustainability 13, no. 9: 5092.
This study examined the rate of injuries and chronic pain in collegiate water-ski athletes as a preliminary study. We also compared the mechanics and cause of injuries by the level of water-skiing experiences. A total number of 96 collegiate water-ski athletes, aged 21.4 ± 2.23 years, participated in the study. An off-line questionnaire was distributed at the collegiate tournaments in the United States. The questionnaire consisted of 20 questions, including demographic information, body region and type of injuries, mechanics and cause of injuries, chronic pain and pain management. A Chi-squared test was used to examine the differences in injury rates by sex and the level of experiences (beginner: <5 years, intermediate: 5–10 years, advanced: <10 years). The significance level was set at ≤0.05. A total of 336 water skiing-related injuries were observed from 96 participants. The ankle/feet, knee, and head/neck regions were the most common body regions injured, representing 26.5, 16.7, and 15.8%, respectively. Female athletes were more likely to have nerve injuries than male athletes (p = 0.039). The intermediate athletes were more likely to have trunk (p = 0.047) and upper extremity (p = 0.042) injuries than beginner athletes, and the beginner athletes had less joint/ligament (p = 0.001) and bone injury (p = 0.010) compared to the advanced athletes. Torsion/twisting (32.8%) and deceleration (26.9%) were the most common mechanism of injury. Beginner athletes experienced injuries more due to insufficient skill (p = 0.03), while the advanced athletes were likely to have more injuries by the loss of control (p = 0.01). Collegiate athletes had higher rates of chronic pain in the trunk (42.7%) and skeletal muscle (43.8%), and they participated in stretching/exercise (40.8%) and massage/form rolling (29.6%) to manage their chronic pain. The present study revealed that injury rates in males and females were 49.7% and 50.2%, respectively. Female athletes were more likely to have a nerve injury than male athletes. The mechanics and cause of injuries were different by the level of experiences where different training approaches may be required to minimize the injuries. Additionally, the strength and conditioning program that is systematically designed for core strength is needed to eliminate chronic trunk pain in collegiate water-skiing athletes.
Hyun Jung; Hanna Straltsova; Michael Woodgate; Kyung-Min Kim; Jung-Min Lee; Joon-Hee Lee; Joshua Gann. Water Ski Injuries and Chronic Pain in Collegiate Athletes. International Journal of Environmental Research and Public Health 2021, 18, 3939 .
AMA StyleHyun Jung, Hanna Straltsova, Michael Woodgate, Kyung-Min Kim, Jung-Min Lee, Joon-Hee Lee, Joshua Gann. Water Ski Injuries and Chronic Pain in Collegiate Athletes. International Journal of Environmental Research and Public Health. 2021; 18 (8):3939.
Chicago/Turabian StyleHyun Jung; Hanna Straltsova; Michael Woodgate; Kyung-Min Kim; Jung-Min Lee; Joon-Hee Lee; Joshua Gann. 2021. "Water Ski Injuries and Chronic Pain in Collegiate Athletes." International Journal of Environmental Research and Public Health 18, no. 8: 3939.
The purpose of the present cross-sectional study was to examine the impacts of allergic respiratory diseases on physical activity (PA), sedentary behaviors (SB), and body mass index (BMI) by matching age and gender with those adolescents without allergic respiratory diseases. This present study analyzed data from the 2019 Korea Youth Risk Behavior Web-based Survey (KYRBWS). Among 57,303 Korean adolescents who responded to the survey, the study divided adolescents into three different groups (i.e., general, asthma, and allergic rhinitis group). Asthma and allergic rhinitis groups included adolescents who checked on asthma- or allergic rhinitis-related questions as ‘yes’ (n = 259, n = 259), but the general group responded to any diseases-related question as ‘no’ (n = 259). The age and gender of participants among the three groups were matched. The results showed weight and BMI were significantly higher in asthma and allergic rhinitis groups compared to the general group (p < 0.001, p < 0.001). Furthermore, age, asthma, and allergic rhinitis were observed to be strong risk factors for predicting obesity in adolescents (BMI, >25.0 kg/m2). In addition, this study found allergic respiratory diseases strong impacts on BMI levels because adolescents with ongoing asthma, or allergic rhinitis symptoms were more likely to have the inevitability of further weight gain compared to the general adolescents. Therefore, not only national interest in adolescents with allergic respiratory disease is essential, but PA should be encouraged to prevent and alleviate these diseases due to obesity.
Jeong-Hui Park; Eunhye Yoo; Myong-Won Seo; Hyun Jung; Jung-Min Lee. Association between Physical Activity and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study. International Journal of Environmental Research and Public Health 2021, 18, 1397 .
AMA StyleJeong-Hui Park, Eunhye Yoo, Myong-Won Seo, Hyun Jung, Jung-Min Lee. Association between Physical Activity and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study. International Journal of Environmental Research and Public Health. 2021; 18 (4):1397.
Chicago/Turabian StyleJeong-Hui Park; Eunhye Yoo; Myong-Won Seo; Hyun Jung; Jung-Min Lee. 2021. "Association between Physical Activity and Respiratory Diseases in Adolescents: An Age- and Gender-Matched Study." International Journal of Environmental Research and Public Health 18, no. 4: 1397.
This study aims to understand the process by which ssireum (traditional Korean wrestling), which was labeled a declining industry, has regained its popularity owing to the impact of the media. The study was conducted as a case study with ten ssireum athletes who participated in the television program “The Rhapsody of Ssireum.” Additionally, text analysis was performed based on in-depth interviews and auxiliary data collection. As a result, four media-driven transformative trends in ssireum were observed: a shift of the public’s interest from online to offline under the influence of media, shift in the public’s perception of ssireum athletes’ body, birth of ssireum stars with nicknames matching the characteristics of popular ssireum athletes, and ssireum athletes’ increased sense of responsibility toward ssireum matches felt under the spotlight of the media. Admittedly, media exposure of ssireum athletes has increased significantly compared to the past. However, for the popularization of ssireum, a sport unique to Korea, the athletes, and the ssireum association need to make a sustained effort.
Eunhye Yoo; Jeong-Hui Park; Jung-Min Lee. The Experience and Meaning of Media to Non-Mainstream Athletes: Qualitative Study. Sustainability 2021, 13, 1154 .
AMA StyleEunhye Yoo, Jeong-Hui Park, Jung-Min Lee. The Experience and Meaning of Media to Non-Mainstream Athletes: Qualitative Study. Sustainability. 2021; 13 (3):1154.
Chicago/Turabian StyleEunhye Yoo; Jeong-Hui Park; Jung-Min Lee. 2021. "The Experience and Meaning of Media to Non-Mainstream Athletes: Qualitative Study." Sustainability 13, no. 3: 1154.
The purpose of this study was to identify the association between physical activity (PA) and predictors of suicidal behaviors and to investigate whether the different PA measurements influence the association between PA and suicidal behaviors in South Korean adults. This study analyzed data from the National Health and Nutrition Examination Survey 2014–2015 data. The study selected participants who checked suicide-related questions as “Yes” (n = 99) and checked suicide-related questions as “No” (n = 99) in the questionnaire. The age, gender, and body mass index of participants between the two groups were matched. The moderate to vigorous PA (p = 0.000) and sedentary PA (p = 0.000), measured by accelerometers, were a significant risk factor for suicidal behaviors. Furthermore, the number of steps was a considerable difference between the two groups (healthy group: 61,495.76 steps; suicide group: 40,517.34 steps), and the accelerometer and questionnaire also showed significant differences. The study demonstrated that there were significant associations with physical activity and socioeconomic status and suicidal behaviors in anthropometry (i.e., age, gender, height, weight) matched groups. Additionally, this study highlights the importance of the assessment of PAs, and increasing PA levels could reduce the incidence of suicidal behaviors.
Jeong-Hui Park; Myong-Won Seo; Hyun Chul Jung; Jung-Min Lee. Let’s Live Healthier: The Relationship between Suicidal Behavior and Physical Activity in an Age-, Gender-, and Body Mass Index-Matched Adults. International Journal of Environmental Research and Public Health 2020, 17, 8350 .
AMA StyleJeong-Hui Park, Myong-Won Seo, Hyun Chul Jung, Jung-Min Lee. Let’s Live Healthier: The Relationship between Suicidal Behavior and Physical Activity in an Age-, Gender-, and Body Mass Index-Matched Adults. International Journal of Environmental Research and Public Health. 2020; 17 (22):8350.
Chicago/Turabian StyleJeong-Hui Park; Myong-Won Seo; Hyun Chul Jung; Jung-Min Lee. 2020. "Let’s Live Healthier: The Relationship between Suicidal Behavior and Physical Activity in an Age-, Gender-, and Body Mass Index-Matched Adults." International Journal of Environmental Research and Public Health 17, no. 22: 8350.
Wearable activity trackers have gained popularity among individuals who want to track their physical activity (PA). The features of wearable tracking technology that are known to facilitate positive behavior changes such as self-monitoring and social connectedness) are well documented; yet, the existing evidence is not conclusive in the literature requiring further investigation. This study was an 8-week pilot randomized controlled study examining the effectiveness of PA intervention incorporating a wearable activity tracker’s online connectivity feature. Forty participants were equally randomized into either an individual-based (n = 20) or a connected group (n = 20). A Jawbone UP24 tracker was provided to all participants in both groups as a means of self-monitoring PA for eight weeks, but the connected group was additionally instructed to share their PA levels with the others using the accompanying smartphone application. Participants’ weekly step counts were evaluated each week to examine the change in PA. Participants’ biometric variables such as body weight, body mass index, waist circumference, blood pressure, and psychological status, including self-efficacy (SE) and exercise motivation (EM), were measured from both groups before and after the intervention period. Additionally, the social support questionnaire (SSQ) was measured among the connected group. The statistical significance level was set at p < 0.001). Significant differences in step count improved from the baseline to week 8 in the connected user group (p < 0.01), but only baseline vs. week 7 in the individual users. Also, no significant interaction effects for biometric variables, EM, and SE were founded. However, SSQ was significantly improved in the connected user group (p < 0.001). PA intervention combining a wearable activity tracker and online social connectivity feature shows a greater effectiveness of promoting PA than a wearable tracker alone
Myong-Won Seo; Youngdeok Kim; Hyun Jung; Jung-Hyun Kim; Jung-Min Lee. Does Online Social Connectivity Promote Physical Activity in a Wearable Tracker-Based Intervention? A Pilot Randomized Controlled Study. Sustainability 2020, 12, 8803 .
AMA StyleMyong-Won Seo, Youngdeok Kim, Hyun Jung, Jung-Hyun Kim, Jung-Min Lee. Does Online Social Connectivity Promote Physical Activity in a Wearable Tracker-Based Intervention? A Pilot Randomized Controlled Study. Sustainability. 2020; 12 (21):8803.
Chicago/Turabian StyleMyong-Won Seo; Youngdeok Kim; Hyun Jung; Jung-Hyun Kim; Jung-Min Lee. 2020. "Does Online Social Connectivity Promote Physical Activity in a Wearable Tracker-Based Intervention? A Pilot Randomized Controlled Study." Sustainability 12, no. 21: 8803.
BodyMetrix™ BX-2000 (IntelaMetrix, Livermore, CA, USA) has been introduced as one of the alternatives and portable methods to estimate body fat percentage. However, inconsistent results between protocols built-in the BodymetrixTM may be compelling the question of its validity. Thus, this study first investigated the possible errors between protocols and evaluated the validity of body fat percentage (BF%) compared to the gold standard method (dual-energy X-ray absorptiometry, DEXA). One hundred and five collegiate males, aged 20.01 ± 2.11 years, body height, 174.81 ± 6.01 cm, body mass, 73.26 ± 13.60 kg, and body mass index, 23.91 ± 3.77 kg·m−2 participated in the present study. Participants’ body fat percentage was estimated by built-in nine different protocols in the BodyMetrix™ BX-2000 using A-MODE ultrasound. Pearson correlation (r), Mean absolute percentage errors (MAPEs), Bland & Altman plots, and Equivalence testing were used to examine the validity of each protocol by comparing it to the criterion measure (i.e., DEXA). The results indicated good potential for almost all of the protocols in correlation (Min: r = 0.79, Max: r = 0.92)., MAPEs (Min: 20.0%, Max: 33.8%), and Bland-Altman (Min diff: 16.7, Max diff: 41.4). Particularly, the estimated BF% from protocol 7 (4-sites by Durnin & Wormersley) and protocol 9 (9-sites Parllo) were completed within the equivalence zone (±10% of the mean). The estimates measured by protocol 7 and protocol 9 identified as the most valid methods for estimating BF% using a BodyMetrix™ BX-2000, compared to the DEXA. Our findings provide valuable information when applying in young male individuals, but future studies with other populations such as female or adolescents may be required to suggest a valid protocol within the instrument.
Seoungki Kang; Jeong-Hui Park; Myong-Won Seo; Hyun Chul Jung; Yong Ik Kim; Jung-Min Lee. Validity of the Portable Ultrasound BodyMetrix™ BX-2000 for Measuring Body Fat Percentage. Sustainability 2020, 12, 8786 .
AMA StyleSeoungki Kang, Jeong-Hui Park, Myong-Won Seo, Hyun Chul Jung, Yong Ik Kim, Jung-Min Lee. Validity of the Portable Ultrasound BodyMetrix™ BX-2000 for Measuring Body Fat Percentage. Sustainability. 2020; 12 (21):8786.
Chicago/Turabian StyleSeoungki Kang; Jeong-Hui Park; Myong-Won Seo; Hyun Chul Jung; Yong Ik Kim; Jung-Min Lee. 2020. "Validity of the Portable Ultrasound BodyMetrix™ BX-2000 for Measuring Body Fat Percentage." Sustainability 12, no. 21: 8786.
Prolonged ocean voyages constrain the regular physical activity and sleep patterns of seafarers. However, there is a lack of information on seafarers’ physical activity and sleep behavior. The purpose of this study was to systematically examine physical activity and sleep patterns among seafarers using a single wrist-worn accelerometer. Fifty-one senior maritime students (mean age = 22.8 years; 80.0% male) in a university navigation department participated in the study. Data were collected from participants on three sea voyages in the Asia-Pacific region. Indicators of moderate to vigorous intensity physical activity (MVPA) and sleep patterns were compared between several conditions: (1) moored versus sailing, (2) on-navigation duty and off- navigation duty, and (3) day versus night navigation duty. Regardless of conditions, low levels of physical activity and short sleep durations were observed. Independent sample t-tests revealed that time spent doing MVPA was significantly higher when participants were off-duty than when they were on-duty (p < 0.001). Physical activity did not significantly differ between the other two conditions. While total sleep duration was not significantly different between mooring and sailing, the results showed that participants awakened more frequently (p = 0.007) and their sleep was more restless (p < 0.001) while sailing. The results demonstrated that developing effective programs to promote physical activity should be a public health priority for the seafaring population, and serious consideration is required to mitigate sleep disruption during sailing.
Ik-Hyun Youn; Jung-Min Lee. Seafarers’ Physical Activity and Sleep Patterns: Results from Asia-Pacific Sea Routes. International Journal of Environmental Research and Public Health 2020, 17, 7266 .
AMA StyleIk-Hyun Youn, Jung-Min Lee. Seafarers’ Physical Activity and Sleep Patterns: Results from Asia-Pacific Sea Routes. International Journal of Environmental Research and Public Health. 2020; 17 (19):7266.
Chicago/Turabian StyleIk-Hyun Youn; Jung-Min Lee. 2020. "Seafarers’ Physical Activity and Sleep Patterns: Results from Asia-Pacific Sea Routes." International Journal of Environmental Research and Public Health 17, no. 19: 7266.
To determine differences in shoulder range of motion, strength, and upper quarter dynamic balance between collegiate overhead athletes with and without a history of a shoulder injury. Cross-sectional study. Athletic training clinic. 58 overhead athletes who were fully participating in NCAA Division I overhead sports (baseball, softball, volleyball, and tennis) and free of any current shoulder injury were included. Participants were divided into a shoulder injury history group (n = 25) and uninjured group (n = 33). Participants in the shoulder injury history group had a previously resolved shoulder injury. Active range of motion assessments for shoulder internal rotation, external rotation, and horizontal adduction. Isometric strength assessments for shoulder IR and ER. The Upper Quarter Y-Balance Test. The shoulder injury history group demonstrated a lower Upper Quarter Y-Balance Test mean score in the superolateral direction (p = .03, d = 0.56), but no group differences existed for other results (p > .05). Overhead athletes with a history of shoulder injury had worse upper quarter dynamic balance versus those without the history. From a clinical perspective, the findings may have significant implications for developing shoulder re-injury prevention and rehabilitation protocols in relation to their shoulder injury history.
Youngwook Kim; Jung-Min Lee; Elizabeth Wellsandt; Adam B. Rosen. Comparison of shoulder range of motion, strength, and upper quarter dynamic balance between NCAA division I overhead athletes with and without a history of shoulder injury. Physical Therapy in Sport 2019, 42, 53 -60.
AMA StyleYoungwook Kim, Jung-Min Lee, Elizabeth Wellsandt, Adam B. Rosen. Comparison of shoulder range of motion, strength, and upper quarter dynamic balance between NCAA division I overhead athletes with and without a history of shoulder injury. Physical Therapy in Sport. 2019; 42 ():53-60.
Chicago/Turabian StyleYoungwook Kim; Jung-Min Lee; Elizabeth Wellsandt; Adam B. Rosen. 2019. "Comparison of shoulder range of motion, strength, and upper quarter dynamic balance between NCAA division I overhead athletes with and without a history of shoulder injury." Physical Therapy in Sport 42, no. : 53-60.
Posterior tibial tendon dysfunction (PTTD) is a common and debilitating tendinopathy that can lead to a profound decrease in gait function. While the clinical diagnosis and treatment of this disorder are well described, the pathomechanics have not been adequately characterized. The purpose of this systematic review and meta-analysis is to compare foot/ankle kinematics and kinetics in patients with PTTD with healthy controls during gait. Relevant articles were selected thought Medline (Pubmed), Scopus, CINAHL, and Web of Science. Studies focused on foot/ankle kinematics and kinetics in patients with PTTD were involved. Articles were included if they: 1) compared patients with PTTD to healthy controls, 2) utilized kinematics or kinetics as the primary outcome measure, 3) evaluated gait tasks, and 4) were written in English. Eleven articles were included in this systematic review, and 8 studies were synthesized and analyzed. Our meta-analyses indicated increased dorsiflexion and abduction of the forefoot, as well as increased plantarflexion and eversion of hindfoot for patients with PTTD during stance of walking. Our results from the meta-analysis showed more conclusive changes in the forefoot (increased dorsiflexion and abduction) and hindfoot (increased plantarflexion and eversion) kinematics during stance of walking, which may be associated with a pathological process of PTTD. This review provides an improved understanding of gait function in patients with PTTD and preliminary knowledge for future research.
Junsig Wang; Erin M. Mannen; Safeer Siddicky; Jung-Min Lee; L. Daniel Latt. Gait alterations in posterior tibial tendonitis: A systematic review and meta-analysis. Gait & Posture 2019, 76, 28 -38.
AMA StyleJunsig Wang, Erin M. Mannen, Safeer Siddicky, Jung-Min Lee, L. Daniel Latt. Gait alterations in posterior tibial tendonitis: A systematic review and meta-analysis. Gait & Posture. 2019; 76 ():28-38.
Chicago/Turabian StyleJunsig Wang; Erin M. Mannen; Safeer Siddicky; Jung-Min Lee; L. Daniel Latt. 2019. "Gait alterations in posterior tibial tendonitis: A systematic review and meta-analysis." Gait & Posture 76, no. : 28-38.
The purpose of this study was to examine the associations of vitamin D status with athletic performance and blood-borne markers in adolescent athletes. This cross-sectional study included forty-seven Taekwondo athletes, aged 15–18 years old. Athletic performance was assessed using maximal oxygen consumption (VO2max), Wingate anaerobic power test, vertical jump, agility T-test, lower limb muscle strength, and fatigue resistance. Blood samples were collected to assess serum 25-hydroxyvitamin D [25(OH)D], free-testosterone, cortisol, creatine kinase, and urea. One-way ANOVAs were applied using Bonferroni adjusted alpha levels, which was 0.02 (i.e., 0.05/3). Multiple linear regressions analyses as well as Pearson and partial correlation analyses were used to examine the relationship among 25(OH)D concentration, athletic performance, and blood-borne markers. The participants 25(OH)D concentration were ranged from 16 to 73.25 nmol/L, indicating that 74.5% of the adolescent athletes have vitamin D insufficiency or deficiency. The vitamin D status did not show any significant effects on the performance factors or blood-borne markers. Serum 25(OH)D concentration was positively correlated with mean power output (r = 0.359, p < 0.05) and relative mean power output (r = 0.325, p < 0.05) after adjusting for bone age, height, weight, training experience, lean body mass, and fat mass. However, 25(OH)D concentration was not associated with other performance-related factors and blood-borne markers. In addition, multiple linear regressions analyses revealed that serum 25(OH)D concentration were not significant predictors of athletic performance in adolescent athletes. In conclusion, vitamin D status is weakly correlated with anaerobic capacity; moreover, the underlying mechanisms of how vitamin D influence anaerobic performance is unclear in the present study. Nevertheless, the importance of vitamin D on health benefits should not be underestimated, especially during growth periods.
Myong-Won Seo; Jong Kook Song; Hyun Chul Jung; Sung-Woo Kim; Jung-Hyun Kim; Jung-Min Lee. The Associations of Vitamin D Status with Athletic Performance and Blood-borne Markers in Adolescent Athletes: A Cross-Sectional Study. International Journal of Environmental Research and Public Health 2019, 16, 3422 .
AMA StyleMyong-Won Seo, Jong Kook Song, Hyun Chul Jung, Sung-Woo Kim, Jung-Hyun Kim, Jung-Min Lee. The Associations of Vitamin D Status with Athletic Performance and Blood-borne Markers in Adolescent Athletes: A Cross-Sectional Study. International Journal of Environmental Research and Public Health. 2019; 16 (18):3422.
Chicago/Turabian StyleMyong-Won Seo; Jong Kook Song; Hyun Chul Jung; Sung-Woo Kim; Jung-Hyun Kim; Jung-Min Lee. 2019. "The Associations of Vitamin D Status with Athletic Performance and Blood-borne Markers in Adolescent Athletes: A Cross-Sectional Study." International Journal of Environmental Research and Public Health 16, no. 18: 3422.
Introduction: To examine the validity and reliability of the Fitbit Charge HR (FCH), wrist-worn ActiGraph (AG) accelerometers were used for assessing the classification of physical activity (PA) into intensity categories in children. Methods: Forty-three children (n = 43) participated in the study. Each participant completed 3 min bouts of 12 PAs ranging from sedentary to vigorous intensity while simultaneously wearing FCH and AG on both hands, a Polar HR monitor, and a portable indirect calorimeter. Total time spent in different PA intensity levels measured by FCH and AG were compared to the indirect calorimetry. Results: The highest classification accuracy values of sedentary behavior was 81.1% for FCH. The highest classification (72.4%) of light intensity PA was observed with Crouter's algorithm from the non-dominant wrist. Crouter's algorithm also show the highest classification (81.8%) for assessing moderate to vigorous intensity PA compared to FCH (70.8%). Across the devices, a high degree of reliability was found in step measurements, ranging from an intra-class correlation (ICC) = 0.92 to an ICC = 0.94. The reliability of the AG and the FCH showed high agreement for each variable. Conclusion: The FCH shows better validity for estimating sedentary behavior and similar validity for assessing moderate to vigorous PA compared to the research-grade monitor. Across the devices, the reliability showed the strongest association.
Seoungki Kang; Youngdeok Kim; Wonwoo Byun; Jinsu Suk; Jung-Min Lee; Kang; Kim; Byun; Suk; Lee. Comparison of a Wearable Tracker with Actigraph for Classifying Physical Activity Intensity and Heart Rate in Children. International Journal of Environmental Research and Public Health 2019, 16, 2663 .
AMA StyleSeoungki Kang, Youngdeok Kim, Wonwoo Byun, Jinsu Suk, Jung-Min Lee, Kang, Kim, Byun, Suk, Lee. Comparison of a Wearable Tracker with Actigraph for Classifying Physical Activity Intensity and Heart Rate in Children. International Journal of Environmental Research and Public Health. 2019; 16 (15):2663.
Chicago/Turabian StyleSeoungki Kang; Youngdeok Kim; Wonwoo Byun; Jinsu Suk; Jung-Min Lee; Kang; Kim; Byun; Suk; Lee. 2019. "Comparison of a Wearable Tracker with Actigraph for Classifying Physical Activity Intensity and Heart Rate in Children." International Journal of Environmental Research and Public Health 16, no. 15: 2663.
To examine the effect of high-intensity interval training (HIIT) with different work-to-rest ratios on athletic performance in athletes. Forty-seven male Taekwondo athletes (aged 15-18 yrs) were randomly assigned into 3 HIIT groups and a control group. Each group performed 6 and 8 bouts of HIIT: 1) 1:2 (30:60 s), 2) 1:4 (30:120 s), and 3) 1:8 (30:240 s) groups while the control group performed only Taekwondo training program. All HIIT groups completed 10 sessions over 4 weeks. Athletic performance tests including VO2max test, Wingate anaerobic test, vertical jump, and agility T-test were measured at both pre- and post-tests. Two-way repeated measures ANOVA were applied to examine the performance changes between protocols. VO2max improved significantly in all HIIT groups (p<0.01), and the post-hoc test indicated that the only 1:4 group showed significant improvement compared to the control group. The HIIT with 1:4 ratio showed the effective protocol for enhancing anaerobic capacity including relative peak and mean power compared to control (p<0.01). Ten sessions of HIIT involving the 1:4 group, lasting over a brief 4-week period revealed the effective protocol for enhancing both aerobic and anaerobic capacity. Our findings provide practical implications to develop a performance-enhancing program specialized for adolescent Taekwondo athletes.
Myong-Won Seo; Jung-Min Lee; Hyun Chul Jung; Sung Woo Jung; Jong Kook Song. Effects of Various Work-to-rest Ratios during High-intensity Interval Training on Athletic Performance in Adolescents. Endoscopy 2019, 40, 503 -510.
AMA StyleMyong-Won Seo, Jung-Min Lee, Hyun Chul Jung, Sung Woo Jung, Jong Kook Song. Effects of Various Work-to-rest Ratios during High-intensity Interval Training on Athletic Performance in Adolescents. Endoscopy. 2019; 40 (8):503-510.
Chicago/Turabian StyleMyong-Won Seo; Jung-Min Lee; Hyun Chul Jung; Sung Woo Jung; Jong Kook Song. 2019. "Effects of Various Work-to-rest Ratios during High-intensity Interval Training on Athletic Performance in Adolescents." Endoscopy 40, no. 8: 503-510.
IntroductionA lack of standardization with accelerometry-based monitors has made it hard to advance applications for both research and practice. Resolving these challenges is essential for developing methods for consistent, agnostic reporting of physical activity outcomes from wearable monit
Gregory J. Welk; Yang Bai; Jung-Min Lee; Job Godino; Pedro F. Saint-Maurice; Lucas Carr. Standardizing Analytic Methods and Reporting in Activity Monitor Validation Studies. Medicine & Science in Sports & Exercise 2019, 51, 1767 -1780.
AMA StyleGregory J. Welk, Yang Bai, Jung-Min Lee, Job Godino, Pedro F. Saint-Maurice, Lucas Carr. Standardizing Analytic Methods and Reporting in Activity Monitor Validation Studies. Medicine & Science in Sports & Exercise. 2019; 51 (8):1767-1780.
Chicago/Turabian StyleGregory J. Welk; Yang Bai; Jung-Min Lee; Job Godino; Pedro F. Saint-Maurice; Lucas Carr. 2019. "Standardizing Analytic Methods and Reporting in Activity Monitor Validation Studies." Medicine & Science in Sports & Exercise 51, no. 8: 1767-1780.
Wonwoo Byun; Jung-Min Lee; Yang Bai; Youngdeok Kim. Epidemiological Research in Physical Activity and Sedentary Behaviors. BioMed Research International 2018, 2018, 1 -2.
AMA StyleWonwoo Byun, Jung-Min Lee, Yang Bai, Youngdeok Kim. Epidemiological Research in Physical Activity and Sedentary Behaviors. BioMed Research International. 2018; 2018 ():1-2.
Chicago/Turabian StyleWonwoo Byun; Jung-Min Lee; Yang Bai; Youngdeok Kim. 2018. "Epidemiological Research in Physical Activity and Sedentary Behaviors." BioMed Research International 2018, no. : 1-2.
ObjectiveTo determine the effectiveness of a workplace wellness programme intervention in improving participants’ behaviour towards choosing a healthy diet and the correlation with health indicators.DesignA retrospective cohort study.SettingWellness programme in the Midwest, USA.SubjectsEmployees (n 12 636) who participated in a wellness programme for three consecutive years during years 2004 to 2013 and who completed web-based health risk questionnaires. The wellness programme included annual health screening, laboratory measures, health risk questionnaire and personalized health-care programme. Participants’ food group intakes, BMI and health indicators were compared between the first and last year of participation. McNemar’s non-parametric test was used for paired nominal data. Pearson correlations were computed for paired food and health indicator measurements. Correlations between dietary intake and BMI, cholesterol and TAG were computed using Pearson correlations and McNemar’s test.ResultsThere were negative correlations between intakes of fruits, vegetables, grains, dairy, healthy eating pattern and health outcome indicators such as BMI and TAG levels. Additionally, the percentage of employees who increased their consumption of fruits (16·88 v. 12·08 %, Pv. 11·44 %, Pv. 7·27 %, P 0·001) was significantly higher than the percentage of participants who decreased their intake of these food groups during the third-year follow-up.ConclusionsThe wellness programme improved some health indicator parameters and had a positive impact on increasing participants’ intakes of fruits, vegetables and whole grains at the third year of follow-up.
Ghada A Soliman; Jungyoon Kim; Jung-Min Lee; Robin High; Sarah Hortman; Youngdeok Kim; Nizar Wehbi; James Canedy. Wellness programme at the workplace promotes dietary change and improves health indicators in a longitudinal retrospective study. Public Health Nutrition 2018, 22, 354 -362.
AMA StyleGhada A Soliman, Jungyoon Kim, Jung-Min Lee, Robin High, Sarah Hortman, Youngdeok Kim, Nizar Wehbi, James Canedy. Wellness programme at the workplace promotes dietary change and improves health indicators in a longitudinal retrospective study. Public Health Nutrition. 2018; 22 (2):354-362.
Chicago/Turabian StyleGhada A Soliman; Jungyoon Kim; Jung-Min Lee; Robin High; Sarah Hortman; Youngdeok Kim; Nizar Wehbi; James Canedy. 2018. "Wellness programme at the workplace promotes dietary change and improves health indicators in a longitudinal retrospective study." Public Health Nutrition 22, no. 2: 354-362.