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This study aim to investigate ego-depletion as a multifactorial phenomenon through two pre-registered study. This pre-registration is about the first study.

This component contains the materials, data , and statistical processing script for Cheval, Boisgontier, Bacelar, Feiss, & Miller (submitted)

Présentation du 19 février 2021 aux Master Kinesiology de l'Université de Montréal, Canada

Webinar in French presenting Open Science to the Association des Chercheurs en Activité Physiques et Sportives (ACAPS)

Stage 1 IPA at Cortex

This project involves an experiment using a go/no-go paradigm with three conditions: avoid low energetic cost stimuli, avoid high energetic cost stimuli, and avoid stimuli unrelated to energetic cost. Electroencephalography is recorded throughout the paradigm to assess brain activity reflective of cognitive control.

The main objective of this study is to test the effect of aging during adulthood on the automatic tendency to engage in physical activity behavior and to avoid sedentary behavior. Potential mediators of these associations are also tested.

Supplemental material, sj-docx-1-pss-10.1177_09567976211036061 for Early-Life Socioeconomic Circumstances and Physical Activity in Older Age: Women Pay the Price by A��na Chalabaev, Stefan Sieber, David Sander, St��phane Cullati, Silvio Maltagliati, Philippe Sarrazin, Matthieu P. Boisgontier and Boris Cheval in Psychological Science

The theory of effort minimization in physical activity (TEMPA) argues that individuals have an automatic attraction toward effort minimization. To engage in a physically active behavior, this automatic attraction needs to be overridden by controlled processes. However, direct evidence showing that inhibitory control is required to avoid effort minimization is lacking. Here, we used go/no-go tasks and electroencephalography (EEG) to assess the neural correlates of inhibitory control associated with visual stimuli depicting physical inactivity, physical activity, or that were neutral in 50 healthy young adults. The N2 event-related potential (ERP) component amplitude was used as a physiological index of inhibitory control. Results showed significant two-way interactions between the type of trials (i.e., go vs. no-go trials) and the type of stimuli on N2, revealing a significantly more pronounced no-go effect (i.e., higher N2 in no-go relative to go trials) for neutral and physical inactivity stimuli compared with physical activity stimuli. Simple tests further revealed that N2 amplitude was more negative in no-go than go trials for neutral stimuli (b=-.91 µV, 95%CI=-1.42 to -.40 µV, p

Physical activity is considered a strategy to improve health. This reasoning implies that physical inactivity is the reference behavior, which is not the case. In health, the gold standard is a state of complete physical, mental and social well-being.1 Physical inactivity involves a higher risk of cardiovascular disease2, hypertension3, diabetes2,4, cancer5, depression6, and obesity7. Moreover, 6 to 10% of all deaths from non-communicable diseases worldwide can be attributed to physical inactivity.8 Therefore, physically active individuals appear to be closer to the health gold standard than inactive individuals. Physical activity – not inactivity – should be the standard reference behavior. In this reversed framework, physical inactivity becomes a clinically significant disturbance in an individual's behavior, which is the definition of a behavioral disorder.9 Therefore, physical inactivity should be treated as such.

Objective: This study aimed to test whether the level of cognitive resources explain the engagement in physical activity across aging and whether the age-related decline of cognitive resources precede the decline in physical activity. Methods: Data from 105,206 adults aged 50 to 90 years from the Survey of Health, Ageing and Retirement in Europe (SHARE) were used in adjusted linear mixed models to examine whether the engagement in moderate physical activity and its evolution across aging was dependent on cognitive resources. Cognitive resources and physical activity were measured 5 times over a 12-year period. Delayed recall, verbal fluency, and the level of education were used as indicators of cognitive resources. The frequency of engagement in moderate physical activity was self-reported. Dynamic structural equation models (SEM) were used to assess the temporal precedence of changes in cognitive resources and physical activity. Results: Results showed that lower cognitive resources were associated with lower levels and steeper decreases in moderate physical activity across aging. Results further revealed a time-ordered effect with a stronger influence of cognitive resources (delayed recall and verbal fluency) on subsequent changes in moderate physical activity than the opposite. Conclusion: These findings suggest that, after age 50, the level of engagement in moderate physical activity and its trajectory depend on the availability of cognitive resources.

Adverse childhood experiences, depression, and functional dependence are inter-related. However, mechanisms underlying this relation remain unclear. Here, we investigated the potential of depression to mediate the effect of adverse childhood experiences on functional dependence in older age and whether physical activity moderated this mediation. Data from 25,775 adults aged 62±9 years from the Survey of Health Ageing and Retirement in Europe (SHARE) was used in adjusted linear mixed-effect models to test whether depression mediated the associations between adverse childhood experiences and functional dependence in activities of daily living (ADL) and instrumental activities of daily living (IADL) and whether physical activity moderated these mediations. As expected, adverse childhood experiences were positively associated with ADL (b = .040 for 0 vs. 1 and b = .067 for 0 vs. ≥2 adverse childhood experiences) and IADL (b = .046 for 0 vs. 1 and b = .076 for 0 vs. ≥2 adverse childhood experiences). Both associations were mediated by depression. Physical activity reduced the effect of adverse childhood experiences on depression (b = -.060 for 0 vs. 1 and b = -.135 for 0 vs. ≥2 adverse childhood experiences) and canceled the effect of depression on functional dependence in ADL (b = .073) and IADL (b = .100), thereby eliminating the effect of adverse childhood experiences on functional dependence. Physical activity cancels the impact of adverse childhood experiences on functional dependence. In inactive individuals, the effect of adverse childhood experiences on functional dependence (ADL and IADL) is mediated by depression.

Background: Physical inactivity has been identified as one of the major risk factors for mortality causing an estimated 3.2 million deaths in the world per year. To reduce mortality risk, adopting physical activity (PA) most days is considered a public health guideline for physical activity participation in adulthood. Here we assessed the predictive value of childhood socioeconomic position on the likelihood to reach the PA guidelines and examined whether adulthood socioeconomic position explains this association. Methods: Data were retrieved from 18,467 (40,228 observations) adults aged 50 years and older across 12 European countries of the longitudinal and cross-national Survey of Health Ageing and Retirement in Europe (SHARE). The associations between childhood socioeconomic position (assessed using retrospective life course information) and the self-reported PA recommendations attainment were estimated using mixed effects logistic regression. Model was adjusted for potential confounders and for the mediating effects of education and main occupation class. Findings: Participants born in the most disadvantaged (OR=1.18), disadvantaged (OR=1.29), and neutral (OR=1.16) childhood socioeconomic position had a greater odds of not reaching the PA recommendations, compared with participants born in the most advantaged socioeconomic position. The effect of the most disadvantaged childhood socioeconomic position strengthened with ageing (OR=1.02). Education attainment and, to a lesser extent, main occupation class, mediated 76% of these associations. Discussion: These findings suggested that education and main occupation class largely explained the deleterious effect of childhood socioeconomic position on the odds of reaching the PA recommendations. Potential implications for public health policy will be outlined., This work was supported by the Swiss National Centre of Competence in Research "LIVES – Overcoming vulnerability: Life course perspectives", which is financed by the Swiss National Science Foundation (51NF40-160590). MB is supported by the Research Foundation – Flanders (FWO). The authors are grateful to the Swiss National Science Foundation for financial assistance.

Funder: Natural Sciences and Engineering Research Council of Canada (NSERC) : RGPIN‐2021‐03153; Id: http://dx.doi.org/10.13039/100000049, Funder: Max Planck Society for the Advancement of Science; Id: http://dx.doi.org/10.13039/501100004189, Funder: German Ministry of Education and Research, Funder: European Commission; Id: http://dx.doi.org/10.13039/501100000780, BACKGROUND: Weak muscle strength has been associated with a wide range of adverse health outcomes. Yet, whether individuals with weaker muscle strength are more at risk for hospitalization due to severe COVID-19 is still unclear. The objective of this study was to investigate the independent association between muscle strength and COVID-19 hospitalization. METHODS: Data from adults 50 years of age or older were analysed using logistic models adjusted for several chronic conditions, body-mass index, age, and sex. Hand-grip strength was repeatedly measured between 2004 and 2017 using a handheld dynamometer. COVID-19 hospitalization during the lockdown was self-reported in summer 2020 and was used as an indicator of COVID-19 severity. RESULTS: The study was based on the Survey of Health, Ageing and Retirement in Europe (SHARE) and included 3600 older adults (68.8 ± 8.8 years, 2044 female), among whom 316 were tested positive for the severe acute respiratory syndrome coronavirus 2 (8.8%), and 83 (2.3%) were hospitalized due to COVID-19. Results showed that higher grip strength was associated with a lower risk of COVID-19 hospitalization [adjusted odds ratio (OR) per increase of 1 standard deviation in grip strength = 0.64, 95% confidence interval (95% CI) = 0.45-0.87, P = 0.015]. Results also showed that age (OR for a 10 -year period = 1.70, 95% CI = 1.32-2.20, P < 0.001) and obesity (OR = 2.01, 95% CI = 1.00-3.69, P = 0.025) were associated with higher risk of COVID-19 hospitalization. Sensitivity analyses using different measurements of grip strength as well as robustness analyses based on rare-events logistic regression and a different sample of participants (i.e. COVID-19 patients) were consistent with the main results. CONCLUSIONS: Muscle strength is an independent risk factor for COVID-19 severity in adults 50 years of age or older.