This page has only limited features, please log in for full access.
Purpose: To evaluate if sedentary time (ST) is associated with heart rate (HR) and variability (HRV) in adults. Methods: We systematically searched PubMed and Google Scholar through June 2020. Inclusion criteria were observational design, humans, adults, English language, ST as the exposure, resting HR/HRV as the outcome, and (meta-analysis only) availability of the quantitative association with variability. After qualitative synthesis, meta-analysis used inverse variance heterogeneity models to estimate pooled associations. Results: Thirteen and eight articles met the criteria for the systematic review and meta-analysis, respectively. All studies were cross-sectional and few used gold standard ST or HRV assessment methodology. The qualitative synthesis suggested no associations between ST and HR/HRV. The meta-analysis found a significant association between ST and HR (β = 0.24 bpm per hour ST; CI: 0.10, 0.37) that was stronger in males (β = 0.36 bpm per hour ST; CI: 0.19, 0.53). Pooled associations between ST and HRV indices were non-significant (p > 0.05). Substantial heterogeneity was detected. Conclusions: The limited available evidence suggests an unfavorable but not clinically meaningful association between ST and HR, but no association with HRV. Future longitudinal studies assessing ST with thigh-based monitoring and HRV with electrocardiogram are needed.
Abdullah Bandar Alansare; Lauren C. Bates; Lee Stoner; Christopher E. Kline; Elizabeth Nagle; J. Richard Jennings; Erik D. Hanson; Mark A. Faghy; Bethany Barone Gibbs. Associations of Sedentary Time with Heart Rate and Heart Rate Variability in Adults: A Systematic Review and Meta-Analysis of Observational Studies. International Journal of Environmental Research and Public Health 2021, 18, 8508 .
AMA StyleAbdullah Bandar Alansare, Lauren C. Bates, Lee Stoner, Christopher E. Kline, Elizabeth Nagle, J. Richard Jennings, Erik D. Hanson, Mark A. Faghy, Bethany Barone Gibbs. Associations of Sedentary Time with Heart Rate and Heart Rate Variability in Adults: A Systematic Review and Meta-Analysis of Observational Studies. International Journal of Environmental Research and Public Health. 2021; 18 (16):8508.
Chicago/Turabian StyleAbdullah Bandar Alansare; Lauren C. Bates; Lee Stoner; Christopher E. Kline; Elizabeth Nagle; J. Richard Jennings; Erik D. Hanson; Mark A. Faghy; Bethany Barone Gibbs. 2021. "Associations of Sedentary Time with Heart Rate and Heart Rate Variability in Adults: A Systematic Review and Meta-Analysis of Observational Studies." International Journal of Environmental Research and Public Health 18, no. 16: 8508.
Preventative measures taken worldwide to decrease the transmission of COVID-19 have had a tremendous impact on youth. Following social restrictions, youth with and without physical disabilities are engaging in less physical activity, more increased sedentary behavior, and poor sleep habits. Specifically, youth wheelchair users (YWU) are likely disproportionately affected by COVID- 19 and have a higher risk of contraction due to underlying comorbidities. While we cannot control all of the negative long-term implications of COVID-19 for YWU, participation in positive 24-h activity behaviors can decrease chronic disease risk and the likelihood of long-term complications resulting from infection. This commentary is to extend the discourse on the importance of 24-h activity behaviors by focusing on YWU. Specifically, we discuss the importance of chronic disease prevention, provide a brief overview of 24-h activity behaviors, and outline some of the lessons that can be learned from the COVID-19 pandemic.
Ryan T. Conners; Lauren C. Bates; Patricia Pagan Lassalle; Gabriel Zieff; Paul N. Whitehead; Sandra Stevens; Lauren Killen; Robert Cochrum; Kathryn L. Rodebaugh; Mark Faghy; Lee Stoner. Current and Future Implications of COVID-19 among Youth Wheelchair Users: 24-Hour Activity Behavior. Children 2021, 8, 690 .
AMA StyleRyan T. Conners, Lauren C. Bates, Patricia Pagan Lassalle, Gabriel Zieff, Paul N. Whitehead, Sandra Stevens, Lauren Killen, Robert Cochrum, Kathryn L. Rodebaugh, Mark Faghy, Lee Stoner. Current and Future Implications of COVID-19 among Youth Wheelchair Users: 24-Hour Activity Behavior. Children. 2021; 8 (8):690.
Chicago/Turabian StyleRyan T. Conners; Lauren C. Bates; Patricia Pagan Lassalle; Gabriel Zieff; Paul N. Whitehead; Sandra Stevens; Lauren Killen; Robert Cochrum; Kathryn L. Rodebaugh; Mark Faghy; Lee Stoner. 2021. "Current and Future Implications of COVID-19 among Youth Wheelchair Users: 24-Hour Activity Behavior." Children 8, no. 8: 690.
People with spinal cord injury (SCI) face unique challenges during the COVID-19 pandemic, including greater risk of poor COVID-19-related outcomes, increased social isolation, and restricted access to important services. Furthermore, COVID-19 related restrictions have decreased already low levels of physical activity (PA) in this population. Therefore, the purpose of this commentary is to: 1) address the impact of COVID-19 on PA and sedentary behavior (SB) in people with SCI; 2) provide potential SB reduction strategies to guide future research; and 3) provide recommendations to increase PA and reduce SB on behalf of the American College of Sports Medicine Exercise is Medicine (ACSM-EIM) and Healthy Living for Pandemic Event Protection (HL-PIVOT) using a social-ecological model targeting the individual-, social environment-, physical environment-, and policy-level determinants of behavior in people with SCI.
Lauren C. Bates; Ryan Conners; Gabriel Zieff; Nathan T. Adams; Kyle M. Edgar; Sandra Stevens; Mark A. Faghy; Ross Arena; Amber Vermeesch; Rodney P. Joseph; Nicole Keith; Lee Stoner. Physical activity and sedentary behavior in people with spinal cord injury: Mitigation strategies during COVID-19 on behalf of ACSM-EIM and HL-PIVOT. Disability and Health Journal 2021, 101177 .
AMA StyleLauren C. Bates, Ryan Conners, Gabriel Zieff, Nathan T. Adams, Kyle M. Edgar, Sandra Stevens, Mark A. Faghy, Ross Arena, Amber Vermeesch, Rodney P. Joseph, Nicole Keith, Lee Stoner. Physical activity and sedentary behavior in people with spinal cord injury: Mitigation strategies during COVID-19 on behalf of ACSM-EIM and HL-PIVOT. Disability and Health Journal. 2021; ():101177.
Chicago/Turabian StyleLauren C. Bates; Ryan Conners; Gabriel Zieff; Nathan T. Adams; Kyle M. Edgar; Sandra Stevens; Mark A. Faghy; Ross Arena; Amber Vermeesch; Rodney P. Joseph; Nicole Keith; Lee Stoner. 2021. "Physical activity and sedentary behavior in people with spinal cord injury: Mitigation strategies during COVID-19 on behalf of ACSM-EIM and HL-PIVOT." Disability and Health Journal , no. : 101177.
Natural killer (NK) cells from the innate immune system are integral to overall immunity and also in managing the tumor burden during cancer. Breast (BCa) and prostate cancer (PCa) are the most common tumors in U.S. adults. Both BCa and PCa are frequently treated with hormone suppression therapies that are associated with numerous adverse effects including direct effects on the immune system. Regular exercise is recommended for cancer survivors to reduce side effects and improve quality of life. Acute exercise is a potent stimulus for NK cells in healthy individuals with current evidence indicating that NK mobilization in individuals with BCa and PCa is comparable. NK cell mobilization results from elevations in shear stress and catecholamine levels. Despite a normal NK cell response to exercise, increases in epinephrine are attenuated in BCa and PCa. The significance of this potential discrepancy still needs to be determined. However, alterations in adrenal hormone signaling are hypothesized to be due to chronic stress during cancer treatment. Additional compensatory factors induced by exercise are reviewed along with recommendations on standardized approaches to be used in exercise immunology studies involving oncology populations.
Erik Hanson; Lauren Bates; Kaileigh Moertl; Elizabeth Evans. Natural Killer Cell Mobilization in Breast and Prostate Cancer Survivors: The Implications of Altered Stress Hormones Following Acute Exercise. Endocrines 2021, 2, 121 -132.
AMA StyleErik Hanson, Lauren Bates, Kaileigh Moertl, Elizabeth Evans. Natural Killer Cell Mobilization in Breast and Prostate Cancer Survivors: The Implications of Altered Stress Hormones Following Acute Exercise. Endocrines. 2021; 2 (2):121-132.
Chicago/Turabian StyleErik Hanson; Lauren Bates; Kaileigh Moertl; Elizabeth Evans. 2021. "Natural Killer Cell Mobilization in Breast and Prostate Cancer Survivors: The Implications of Altered Stress Hormones Following Acute Exercise." Endocrines 2, no. 2: 121-132.
Prolonged sitting increases cardiovascular disease (CVD) risk, however the physiological mechanisms contributing to CVD from acute sitting exposure are not well-understood. Therefore, this study investigated the heart rate (HR) and variability (HRV) responses to prolonged sitting and after interrupting prolonged sitting (e.g., walking). Electronic databases were searched (inception-August 2020) for studies which exposed adults to prolonged (≥1 h) sitting with and/or without interruptions. Twenty-one articles (27 trials, n = 537) met inclusion criteria. Prolonged sitting non-significantly increased HR (weighted mean difference (WMD) = 0 bpm, 95% CI: −2, 3) and HRV (standardized mean difference (SMD) = 0.12, 95% CI: −0.08, 0.33) compared to pre-sitting baseline. Interrupting prolonged sitting yielded a non-significant small increase in HR (WMD = 4 bpm, 95% CI: 0, 7) compared to pre-sitting baseline. Sub-group analyses investigating interrupting prolonged sitting revealed small-to-moderate increases in HR in healthy populations (WMD = 6 bpm, 95% CI: 1, 10) and following walking interruptions (WMD = 7 bpm, 95% CI: 3, 11). In conclusion, prolonged sitting does not significantly affect HR or HRV. However, interrupting prolonged sitting yielded a small non-significant increase in HR, potentially indicative of increased metabolic demand. Further research is needed to investigate poor CVD outcomes via autonomic disruption from prolonged sitting.
Lauren C. Bates; Abdullah Alansare; Bethany Barone Gibbs; Erik D. Hanson; Lee Stoner. Effects of Acute Prolonged Sitting and Interrupting Prolonged Sitting on Heart Rate Variability and Heart Rate in Adults: A Meta-Analysis. Frontiers in Physiology 2021, 12, 1 .
AMA StyleLauren C. Bates, Abdullah Alansare, Bethany Barone Gibbs, Erik D. Hanson, Lee Stoner. Effects of Acute Prolonged Sitting and Interrupting Prolonged Sitting on Heart Rate Variability and Heart Rate in Adults: A Meta-Analysis. Frontiers in Physiology. 2021; 12 ():1.
Chicago/Turabian StyleLauren C. Bates; Abdullah Alansare; Bethany Barone Gibbs; Erik D. Hanson; Lee Stoner. 2021. "Effects of Acute Prolonged Sitting and Interrupting Prolonged Sitting on Heart Rate Variability and Heart Rate in Adults: A Meta-Analysis." Frontiers in Physiology 12, no. : 1.
In the wake of the COVID-19 pandemic, social restrictions to contain the spread of the virus have disrupted behaviors across the 24-h day including physical activity, sedentary behavior, and sleep among children (5–12 years old) and adolescents (13–17 years old). Preliminary evidence reports significant decreases in physical activity, increases in sedentary behavior, and disrupted sleep schedules/sleep quality in children and adolescents. This commentary discusses the impact of COVID-19-related restrictions on behaviors across the 24-h day in children and adolescents. Furthermore, we suggest recommendations through the lens of a socio-ecological model to provide strategies for lasting behavior change to insure the health and well-being of children and adolescents during the COVID-19 pandemic.
Lauren Bates; Gabriel Zieff; Kathleen Stanford; Justin Moore; Zachary Kerr; Erik Hanson; Bethany Barone Gibbs; Christopher Kline; Lee Stoner. COVID-19 Impact on Behaviors across the 24-Hour Day in Children and Adolescents: Physical Activity, Sedentary Behavior, and Sleep. Children 2020, 7, 138 .
AMA StyleLauren Bates, Gabriel Zieff, Kathleen Stanford, Justin Moore, Zachary Kerr, Erik Hanson, Bethany Barone Gibbs, Christopher Kline, Lee Stoner. COVID-19 Impact on Behaviors across the 24-Hour Day in Children and Adolescents: Physical Activity, Sedentary Behavior, and Sleep. Children. 2020; 7 (9):138.
Chicago/Turabian StyleLauren Bates; Gabriel Zieff; Kathleen Stanford; Justin Moore; Zachary Kerr; Erik Hanson; Bethany Barone Gibbs; Christopher Kline; Lee Stoner. 2020. "COVID-19 Impact on Behaviors across the 24-Hour Day in Children and Adolescents: Physical Activity, Sedentary Behavior, and Sleep." Children 7, no. 9: 138.
Lauren C. Bates; Erik D. Hanson; Michael M. Levitt; Bryan Richie; Elise Erickson; David B. Bartlett; Melody D. Phillips. Mucosal-Associated Invariant T Cell Response To Acute Exercise In Overweight Older Women. Medicine & Science in Sports & Exercise 2020, 52, 664 -664.
AMA StyleLauren C. Bates, Erik D. Hanson, Michael M. Levitt, Bryan Richie, Elise Erickson, David B. Bartlett, Melody D. Phillips. Mucosal-Associated Invariant T Cell Response To Acute Exercise In Overweight Older Women. Medicine & Science in Sports & Exercise. 2020; 52 (7S):664-664.
Chicago/Turabian StyleLauren C. Bates; Erik D. Hanson; Michael M. Levitt; Bryan Richie; Elise Erickson; David B. Bartlett; Melody D. Phillips. 2020. "Mucosal-Associated Invariant T Cell Response To Acute Exercise In Overweight Older Women." Medicine & Science in Sports & Exercise 52, no. 7S: 664-664.
Lauren C. Bates; William S. Evans; Quentin Willey; Daniel P. Credeur; Lee Stoner; Erik D. Hanson. Prolonged Sitting Increases Arterial Stiffness in Healthy Adults. Medicine & Science in Sports & Exercise 2019, 51, 660 -660.
AMA StyleLauren C. Bates, William S. Evans, Quentin Willey, Daniel P. Credeur, Lee Stoner, Erik D. Hanson. Prolonged Sitting Increases Arterial Stiffness in Healthy Adults. Medicine & Science in Sports & Exercise. 2019; 51 (6S):660-660.
Chicago/Turabian StyleLauren C. Bates; William S. Evans; Quentin Willey; Daniel P. Credeur; Lee Stoner; Erik D. Hanson. 2019. "Prolonged Sitting Increases Arterial Stiffness in Healthy Adults." Medicine & Science in Sports & Exercise 51, no. 6S: 660-660.