Ian Janssen
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View article: The 24-Hour Movement Behavior Composition and the Risk of Dementia
The 24-Hour Movement Behavior Composition and the Risk of Dementia Open
Objectives: This study examined the relationship between the 24-hour movement behavior composition—including sleep, sedentary time, light physical activity, and moderate-to-vigorous physical activity—and dementia risk. Methods: 93,781 part…
View article: Assessing the damage: analyzing the impact of the COVID-19 pandemic on accelerometer-assessed 24-hour movement behaviours in Brazilian adolescents
Assessing the damage: analyzing the impact of the COVID-19 pandemic on accelerometer-assessed 24-hour movement behaviours in Brazilian adolescents Open
View article: Associations between social media use and positive mental health among adolescents: Findings from the Canadian Health Behaviour in School-aged Children Study
Associations between social media use and positive mental health among adolescents: Findings from the Canadian Health Behaviour in School-aged Children Study Open
View article: Optimal levels of sleep, sedentary behaviour, and physical activity needed to support cognitive function in children of the early years
Optimal levels of sleep, sedentary behaviour, and physical activity needed to support cognitive function in children of the early years Open
Working memory was the only cognitive function outcome related to the 24-h movement behaviour composition. Optimal sleep for working memory was consistent with current recommended durations, while optimal moderate-to-vigorous physical acti…
View article: Nutritional intervention to enhance recovery after arthroscopic knee surgery in adults: a randomized controlled pilot trial
Nutritional intervention to enhance recovery after arthroscopic knee surgery in adults: a randomized controlled pilot trial Open
ClinicalTrials.gov, NCT06233825. Registered 31 January 2024. https://clinicaltrials.gov/study/NCT06233825?term=NCT06233825&rank=1.
View article: Sleep health characteristics and positive mental health in Canadian youth: A cross-sectional analysis of the Health Behaviour in School-aged Children study
Sleep health characteristics and positive mental health in Canadian youth: A cross-sectional analysis of the Health Behaviour in School-aged Children study Open
The findings suggest that good sleep health is associated with higher odds of positive mental health among Canadian youth in grades 6-10. Further research is needed to understand the temporality of the associations and the underlying mecha…
View article: Plantar flexor strength and size decrease following single‐leg disuse in uninjured adults: A meta‐analysis
Plantar flexor strength and size decrease following single‐leg disuse in uninjured adults: A meta‐analysis Open
Introduction Plantar flexors play a pivotal role in human locomotion and balance. Several original research studies and systematic reviews have characterised the impact of single‐leg disuse on plantar flexor strength and size. However, no …
View article: Utilisation des médias sociaux et santé du sommeil chez les adolescents au Canada
Utilisation des médias sociaux et santé du sommeil chez les adolescents au Canada Open
Introduction Les effets de l’utilisation des médias sociaux sur la santé des adolescents soulèvent de plus en plus de préoccupations en matière de santé publique. Nous avons exploré la relation entre cette utilisation et la santé du somme…
View article: Social media use and sleep health among adolescents in Canada
Social media use and sleep health among adolescents in Canada Open
Introduction Public health concerns over the impact of social media use (SMU) on adolescent health are growing. We investigated the relationship between SMU and sleep health in adolescents in Canada aged 11 to 17 years. Methods Data fro…
View article: The sleep and activity database for the early years (SADEY) study: design and methods
The sleep and activity database for the early years (SADEY) study: design and methods Open
View article: Surgical approaches of shoulder calcific tendonitis: a systematic review and meta-analysis
Surgical approaches of shoulder calcific tendonitis: a systematic review and meta-analysis Open
All surgical interventions provide substantial improvement in shoulder functions and pain control scores with no significant difference between these surgical techniques.
View article: Public health importance of light intensity physical activity
Public health importance of light intensity physical activity Open
View article: Assessing the damage: analyzing the impact of the COVID-19 pandemic on accelerometer-assessed 24-hour movement behaviors in Brazilian adolescents
Assessing the damage: analyzing the impact of the COVID-19 pandemic on accelerometer-assessed 24-hour movement behaviors in Brazilian adolescents Open
Background: Although there is consistent evidence of unhealthy changes in the 24-hour movement behaviours when comparing pre-COVID-19 periods to the early stages of the pandemic, there is limited research on long-term changes among adolesc…
View article: Physical environment features that predict outdoor active play can be measured using Google Street View images
Physical environment features that predict outdoor active play can be measured using Google Street View images Open
View article: The 2022 ParticipACTION Report Card on Physical Activity for Children and Youth: Focus on the COVID-19 pandemic impact and equity-deserving groups
The 2022 ParticipACTION Report Card on Physical Activity for Children and Youth: Focus on the COVID-19 pandemic impact and equity-deserving groups Open
Introduction The ParticipACTION Report Card on Physical Activity for Children and Youth is the most comprehensive national assessment of physical activity and related behaviors, characteristics, and opportunities for children and youth. Th…
View article: Physical environment features that predict outdoor active play can be measured using Google Street View images
Physical environment features that predict outdoor active play can be measured using Google Street View images Open
Childrens’ outdoor active play is an important part of their development. Play behaviour can be predicted by a variety of physical and social environmental features. Some of these features are difficult to measure with traditional data sou…
View article: The association between social media use and physical activity among Canadian adolescents: a Health Behaviour in School-aged Children (HBSC) study
The association between social media use and physical activity among Canadian adolescents: a Health Behaviour in School-aged Children (HBSC) study Open
Objective To determine the association between social media use (SMU) and physical activity (PA) among Canadian adolescents. Methods We used data from 12,358 participants in grades 6 to 10 who responded to the Canadian component of the 201…
View article: Single‐leg disuse decreases skeletal muscle strength, size, and power in uninjured adults: A systematic review and meta‐analysis
Single‐leg disuse decreases skeletal muscle strength, size, and power in uninjured adults: A systematic review and meta‐analysis Open
We aimed to quantify declines from baseline in lower limb skeletal muscle size and strength of uninjured adults following single‐leg disuse. We searched EMBASE, Medline, CINAHL, and CCRCT up to 30 January 2022. Studies were included in the…
View article: A systematic review of compositional analysis studies examining the associations between sleep, sedentary behaviour, and physical activity with health indicators in early childhood
A systematic review of compositional analysis studies examining the associations between sleep, sedentary behaviour, and physical activity with health indicators in early childhood Open
Background This systematic review examined if the composition of time spent in sleep, sedentary behaviour, and physical activity of different intensities is associated with health and developmental indicators in children aged 0–5 years. Me…
View article: Economic burden of excessive sedentary behaviour in Canada
Economic burden of excessive sedentary behaviour in Canada Open
View article: Economic instruments for obesity prevention: results of a scoping review and modified delphi survey
Economic instruments for obesity prevention: results of a scoping review and modified delphi survey Open
Background Comprehensive, multi-level approaches are required to address obesity. One important target for intervention is the economic domain. The purpose of this study was to synthesize existing evidence regarding the impact of economic …
View article: Top 10 International Priorities for Physical Fitness Research and Surveillance Among Children and Adolescents: A Twin-Panel Delphi Study
Top 10 International Priorities for Physical Fitness Research and Surveillance Among Children and Adolescents: A Twin-Panel Delphi Study Open
View article: Gendered associations between e-cigarette use, cigarette smoking, physical activity, and sedentary behaviour in a sample of Canadian adolescents
Gendered associations between e-cigarette use, cigarette smoking, physical activity, and sedentary behaviour in a sample of Canadian adolescents Open
This study found that associations between e-cigarette use and cigarette smoking with physical activity, sedentary behaviour, and sport participation are largely gendered. Identifying differential co-occurrence of risk behaviours by gender…
View article: Moment choisi pour faire de l’activité physique sur 24 heures et son influence sur la santé : revue systématique
Moment choisi pour faire de l’activité physique sur 24 heures et son influence sur la santé : revue systématique Open
Introduction Selon certaines études récentes, les bienfaits de l’activité physique pour la santé diffèrent selon que l’activité est pratiquée le matin, l’après-midi ou le soir. Le but de cette revue systématique était de déterminer s’il e…
View article: Timing of sedentary behaviour and access to sedentary activities in the bedroom and their association with sleep quality and duration in children and youth: a systematic review
Timing of sedentary behaviour and access to sedentary activities in the bedroom and their association with sleep quality and duration in children and youth: a systematic review Open
Background The purpose of this study was to systematically review the relationship between the timing of sedentary behaviours and access to sedentary activities in the bedroom with sleep duration and quality in children and youth. A secon…
View article: Horaire de sommeil et indicateurs de santé chez les enfants et les adolescents : revue systématique
Horaire de sommeil et indicateurs de santé chez les enfants et les adolescents : revue systématique Open
Introduction Pour continuer à éclairer les lignes directrices sur la santé concernant le sommeil ainsi qu’à favoriser l’élaboration d’interventions fondées sur des données probantes en faveur d’un sommeil sain chez les enfants et les adol…
View article: Revue systématique des liens entre, d’une part, l’horaire des comportements sédentaires et l’accès à des activités sédentaires dans la chambre et, d’autre part, la qualité et la durée du sommeil chez les enfants et les adolescents
Revue systématique des liens entre, d’une part, l’horaire des comportements sédentaires et l’accès à des activités sédentaires dans la chambre et, d’autre part, la qualité et la durée du sommeil chez les enfants et les adolescents Open
Introduction L’objectif de cette étude était d’effectuer une revue systématique des relations entre, d’une part, l’horaire des comportements sédentaires et l’accès à des activités sédentaires dans la chambre et, d’autre part, la durée et …
View article: Timing of 24-hour movement behaviours: implications for practice, policy and research
Timing of 24-hour movement behaviours: implications for practice, policy and research Open
For health benefits, Canadians need to: move when it suits them; remove screens from bedrooms and limit screen use prior to bedtime; and adjust bedtime so that they can sleep the recommended amount. The 24-Hour Movement Guidelines Communic…
View article: Sleep timing and health indicators in children and adolescents: a systematic review
Sleep timing and health indicators in children and adolescents: a systematic review Open
Introduction To continue to inform sleep health guidelines and the development of evidence-based healthy sleep interventions for children and adolescents, it is important to better understand the associations between sleep timing (bedtime…
View article: Timing of physical activity within the 24-hour day and its influence on health: a systematic review
Timing of physical activity within the 24-hour day and its influence on health: a systematic review Open
Background Recent studies report that the health benefits of physical activity differ depending on whether the activity is performed in the morning, afternoon or evening. The purpose of this systematic review was to examine whether the ti…