Omar Boukhris

Dr. Omar Boukhris

School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 May 2020 in Nutrients
Verified
Journal Article
Open access
PDF file
Achraf AmmarAchraf Ammar
Achraf Ammar
MBMichael Brach
Michael Brach
Khaled TrabelsiKhaled Trabelsi
Khaled Trabelsi
HCHamdi Chtourou
Hamdi Chtourou
Omar BoukhrisOmar Boukhris
Omar Boukhris
OCOn Behalf of the ECLB-COVID19 Consortium
On Behalf of the ECLB-COVID19 Consortium
Background: Public health recommendations and governmental measures during the COVID-19 pandemic have resulted in numerous restrictions on daily living including social distancing, isolation and home confinement. While these measures are imperative to abate the spreading of COVID-19, the impact of these restrictions on health behaviours and lifestyles at home is undefined. Therefore, an international online survey was launched in April 2020, in seven languages, to elucidate the behavioural and lifestyle consequences of COVID-19 restrictions. This report presents the results from the first thousand responders on physical activity (PA) and nutrition behaviours. Methods: Following a structured review of the literature, the “Effects of home Confinement on multiple Lifestyle Behaviours during the COVID-19 outbreak (ECLB-COVID19)” Electronic survey was designed by a steering group of multidisciplinary scientists and academics. The survey was uploaded and shared on the Google online survey platform. Thirty-five research organisations from Europe, North-Africa, Western Asia and the Americas promoted the survey in English, German, French, Arabic, Spanish, Portuguese and Slovenian languages. Questions were presented in a differential format, with questions related to responses “before” and “during” confinement conditions. Results: 1047 replies (54% women) from Asia (36%), Africa (40%), Europe (21%) and other (3%) were included in the analysis. The COVID-19 home confinement had a negative effect on all PA intensity levels (vigorous, moderate, walking and overall). Additionally, daily sitting time increased from 5 to 8 h per day. Food consumption and meal patterns (the type of food, eating out of control, snacks between meals, number of main meals) were more unhealthy during confinement, with only alcohol binge drinking decreasing significantly. Conclusion: While isolation is a necessary measure to protect public health, results indicate that it alters physical activity and eating behaviours in a health compromising direction. A more detailed analysis of survey data will allow for a segregation of these responses in different age groups, countries and other subgroups, which will help develop interventions to mitigate the negative lifestyle behaviours that have manifested during the COVID-19 confinement.

Achraf AmmarAchraf Ammar
Achraf Ammar
HCHamdi Chtourou
Hamdi Chtourou
Omar BoukhrisOmar Boukhris
Omar Boukhris
Khaled TrabelsiKhaled Trabelsi
Khaled Trabelsi
LMLiwa Masmoudi
Liwa Masmoudi
Leonardo Jose Mataruna-Dos-SantosLeonardo Jose Mataruna-Dos-Santos
Leonardo Jose Mataruna-Dos-Santos
Public health recommendations and governmental measures during the new coronavirusdisease (COVID-19) pandemic have enforced numerous restrictions on daily living including socialdistancing, isolation, and home confinement. While these measures are imperative to mitigatespreading of COVID-19, the impact of these restrictions on psychosocial health is undefined. Therefore,an international online survey was launched in April 2020 to elucidate the behavioral and lifestyleconsequences of COVID-19 restrictions. This report presents the preliminary results from more thanone thousand responders on social participation and life satisfaction. Methods: Thirty-five researchorganizations from Europe, North-Africa, Western Asia, and the Americas promoted the surveythrough their networks to the general society, in 7 languages (English, German, French, Arabic,Spanish, Portuguese, and Slovenian). Questions were presented in a differential format with questionsrelated to responses “before” and “during” confinement conditions. Results: 1047 participations(54% women) from Asia (36%), Africa (40%), Europe (21%), and others (3%) were included in theanalysis. Findings revealed psychosocial strain during the enforced COVID-19 home confinement.Large decreases (p<0.001) in the amount of social activity through family (−58%), friends/neighbors(−44.9%), or entertainment (−46.7%) were triggered by the enforced confinement. These negativeeffects on social participation were also associated with lower life satisfaction (−30.5%) during theconfinement period. Conversely, the social contact score through digital technologies significantlyincreased (p<0.001) during the confinement period with more individuals (+24.8%) being sociallyconnected through digital technology. Conclusion: These preliminary findings elucidate the riskof psychosocial strain during the early COVID-19 home confinement period in 2020. Therefore,in order to mitigate the negative psychosocial effects of home confinement, implementation ofnational strategies focused on promoting social inclusion through a technology-based solution isstrongly suggested.

23 October 2021 in Sports Medicine
Verified
Journal Article
Open access
PDF file
JWJad Adrian Washif
Jad Adrian Washif
AFAbdulaziz Farooq
Abdulaziz Farooq
Isabel KrugIsabel Krug
Isabel Krug
DPDavid Pyne
David Pyne
EVEvert Verhagen
Evert Verhagen
KCKarim Chamari
Karim Chamari
Objective: Our objective was to explore the training-related knowledge, beliefs, and practices of athletes and the influence of lockdowns in response to the coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Methods: Athletes (n = 12,526, comprising 13% world class, 21% international, 36% national, 24% state, and 6% recreational) completed an online survey that was available from 17 May to 5 July 2020 and explored their training behaviors (training knowledge, beliefs/attitudes, and practices), including specific questions on their training intensity, frequency, and session duration before and during lockdown (March–June 2020). Results: Overall, 85% of athletes wanted to “maintain training,” and 79% disagreed with the statement that it is “okay to not train during lockdown,” with a greater prevalence for both in higher-level athletes. In total, 60% of athletes considered “coaching by correspondence (remote coaching)” to be sufficient (highest amongst world-class athletes). During lockdown, < 40% were able to maintain sport-specific training (e.g., long endurance [39%], interval training [35%], weightlifting [33%], plyometric exercise [30%]) at pre-lockdown levels (higher among world-class, international, and national athletes), with most (83%) training for “general fitness and health maintenance” during lockdown. Athletes trained alone (80%) and focused on bodyweight (65%) and cardiovascular (59%) exercise/training during lockdown. Compared with before lockdown, most athletes reported reduced training frequency (from between five and seven sessions per week to four or fewer), shorter training sessions (from ≥ 60 to < 60 min), and lower sport-specific intensity (~ 38% reduction), irrespective of athlete classification. Conclusions: COVID-19-related lockdowns saw marked reductions in athletic training specificity, intensity, frequency, and duration, with notable within-sample differences (by athlete classification). Higher classification athletes had the strongest desire to “maintain” training and the greatest opposition to “not training” during lockdowns. These higher classification athletes retained training specificity to a greater degree than others, probably because of preferential access to limited training resources. More higher classification athletes considered “coaching by correspondence” as sufficient than did lower classification athletes. These lockdown-mediated changes in training were not conducive to maintenance or progression of athletes’ physical capacities and were also likely detrimental to athletes’ mental health. These data can be used by policy makers, athletes, and their multidisciplinary teams to modulate their practice, with a degree of individualization, in the current and continued pandemic-related scenario. Furthermore, the data may drive training-related educational resources for athletes and their multidisciplinary teams. Such upskilling would provide athletes with evidence to inform their training modifications in response to germane situations (e.g., COVID related, injury, and illness).

Khaled TrabelsiKhaled Trabelsi
Khaled Trabelsi
Achraf AmmarAchraf Ammar
Achraf Ammar
LMLiwa Masmoudi
Liwa Masmoudi
Omar BoukhrisOmar Boukhris
Omar Boukhris
HCHamdi Chtourou
Hamdi Chtourou
OCon behalf of the ECLB-COVID19 Consortium
on behalf of the ECLB-COVID19 Consortium
Background. The COVID-19 lockdown could engender disruption to lifestyle behaviors, thus impairing mental wellbeing in the general population. This study investigated whether sociodemographic variables, changes in physical activity, and sleep quality from pre- to during lockdown were predictors of change in mental wellbeing in quarantined older adults. Methods. A 12-week international online survey was launched in 14 languages on 6 April 2020. Forty-one research institutions from Europe, Western-Asia, North-Africa, and the Americas, promoted the survey. The survey was presented in a differential format with questions related to responses “pre” and “during” the lockdown period. Participants responded to the Short Warwick–Edinburgh Mental Wellbeing Scale, the Pittsburgh Sleep Quality Index (PSQI) questionnaire, and the short form of the International Physical Activity Questionnaire. Results. Replies from older adults (aged >55 years, n = 517), mainly from Europe (50.1%), Western-Asia (6.8%), America (30%), and North-Africa (9.3%) were analyzed. The COVID-19 lockdown led to significantly decreased mental wellbeing, sleep quality, and total physical activity energy expenditure levels (all p < 0.001). Regression analysis showed that the change in total PSQI score and total physical activity energy expenditure (F(2, 514) = 66.41 p < 0.001) were significant predictors of the decrease in mental wellbeing from pre- to during lockdown (p < 0.001, R2: 0.20). Conclusion. COVID-19 lockdown deleteriously affected physical activity and sleep patterns. Furthermore, change in the total PSQI score and total physical activity energy expenditure were significant predictors for the decrease in mental wellbeing.

30 December 2022 in Behavioral Sciences
Verified
Journal Article
Open access
PDF file
Haitham JahramiHaitham Jahrami
Haitham Jahrami
Khaled TrabelsiKhaled Trabelsi
Khaled Trabelsi
Omar BoukhrisOmar Boukhris
Omar Boukhris
JHJumana Hasan Hussain
Jumana Hasan Hussain
AAAhmad F. Alenezi
Ahmad F. Alenezi
Mary SeemanMary Seeman
Mary Seeman
NOMOPHOBIA, or NO MObile PHone Phobia, refers to a psychological condition in which people fear being disconnected from their mobile phones. The purpose of this review was to establish the prevalence of nomophobia symptoms in youth and young adults according to severity, country, culture, population, measurement tool, and year of data collection. An electronic search of fourteen databases, two digital preservation services, and three content aggregator services was conducted from the inception of each database until 15 September 2021. A total of 52 studies involving 47,399 participants from 20 countries were included in the analyses. The prevalence of nomophobia was defined as the proportion of individuals scoring at or above established cut-offs on validated measures. Based on a random-effects meta-analysis, approximately 20% of individuals showed mild symptoms of nomophobia, 50% showed moderate symptoms, and 20% showed severe symptoms. Our results showed that university students from non-Western cultures are the most likely to suffer severe symptoms. In the year 2021, the prevalence rate of nomophobia increased. The instrument that was best able to detect nomophobia was the nomophobia questionnaire. Most individuals who own mobile phones experience mild or moderate symptoms of nomophobia. Severe symptoms deserve attention from clinicians and research scientists. A valid method of identifying individuals with a severe addiction to their mobile phones will help with timely and effective therapeutic management.

Omar BoukhrisOmar Boukhris
Omar Boukhris
Khaled TrabelsiKhaled Trabelsi
Khaled Trabelsi
Achraf AmmarAchraf Ammar
Achraf Ammar
RARaouf Abdessalem
Raouf Abdessalem
HHHsen Hsouna
Hsen Hsouna
HCHamdi Chtourou
Hamdi Chtourou
This study examined the effects of different nap durations on attention and physical performance as well as mood states, sleepiness, perceived exertion (RPE), recovery (PRS), and muscle soreness (DOMS) in trained men. Fourteen amateur team sport players (age: 20.3 ± 3.0 years, height: 173.1 ± 6.7 cm, body-mass: 68.1 ± 6.6 kg) performed a maximal voluntary isometric contraction (MVIC) test, 5-m shuttle run, and the digit-cancellation (i.e., attention) test after a no-nap (N0) and 40-min (N40) and 90-min (N90) of nap opportunities. Subjective measurement of mood states, RPE, PRS and DOMS were determined. Compared to N0, both nap durations enhanced attention, MVIC, total distance (TD), and higher distance (HD) (p < 0.001), with a higher gain after N90 compared to N40 for attention (Δ = +3), MVIC (Δ = +30 N) and TD (Δ = +35 m) (p < 0.001). Total mood scores were better after N40 and N90 compared to N0 (p < 0.05), with lower scores after N90 compared to N40 (p < 0.05). DOMS and RPE scores were significantly lower and PRS was significantly higher after N40 and N90 compared to N0 and after N90 compared to N40 (p < 0.05). Although both nap opportunity durations were beneficial, N90 was better than N40 for improving physical performances and attention as well as the perception of recovery, reducing fatigue perception, muscle soreness, and negative mood states.