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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Daily Overview

Session

GR1_2_4: Pitch oral & WG Monitoring and surveillance of physical activity Group Meeting
Location: Glass room 1
Session Chair: Pauliina Husu

Presentation 6

3:55pm - 3:58pm

Associations of 24-h movement behaviors with BMI: A population-based study using compositional data analysis

Katariina Sarttila^1,2, Lotta Palmberg^3,4, Valtteri Pohjola^1,2, Antti Löppönen³, Jouni Lahti¹

1: Finnish Institute For Health and Welfare, Finland; 2: Department of Public Health, University of Helsinki, Finland; 3: Faculty of Sport and Health Sciences, University of Jyväskylä, Finland; 4: Public Health Centre for Population Health Research, University of Turku, Finland

Background: Low physical activity (PA) and high sedentary behavior (SB) decrease energy expenditure and may lead to weight gain. As PA, SB, and sleep together comprise the 24-hour day, these behaviors are interdependent. This study examines the association between 24-h movement behaviors and BMI in Finnish adults.

Methods: A random sample of Finnish adults aged 20 years and older was invited to the population‑based Healthy Finland 2023 health‑examination survey (n= 10,000; participation rate 58%). A sub-sample (n=859) completed continuous 3–7-day wrist-worn accelerometer measurements for sleep, SB, light-intensity physical activity (LIPA) and moderate-to-vigorous physical activity (MVPA). Compositional binary logistic regression analysis, adjusted for age and sex, was used in R to examine associations between 24-h movement behaviors and BMI.

Results: A higher relative proportion of SB to the remaining 24-h movement behaviors (MVPA, LIPA, sleep) was associated with a higher likelihood of both overweight (p=0.007) and obesity (p<0.001). Conversely, a higher relative proportion of MVPA compared to the remaining behaviors was associated with lower odds of overweight (p=0.003) and obesity (p<0.001). Differences in the relative amount of LIPA showed no association with either overweight or obesity.

Conclusions: The results underscore the protective role of MVPA on maintaining a healthy weight, as well as the central role of SB in contributing to adverse weight outcomes within the 24‑hour movement composition. These findings highlight that the relative balance of daily movement behaviors, rather than their absolute durations, is key for weight‑related outcomes.