@article{01JNZJ7GZRR0Z2ZKKBJG09JTK6,
  abstract     = {{BackgroundTo design effective tailored interventions to promote physical activity (PA) among older adults, insights are needed into the contexts in which older adults engage in PA and their affective and physical experiences. Sensor-triggered event-based ecological momentary assessment (EMA) is an innovative method for capturing real-life contexts, as well as affective and physical states, during or immediately after specific events, such as PA. This study aimed to (1) describe the physical and social contexts, and the affective and physical states during PA among older adults, (2) evaluate how these constructs fluctuate during PA episodes, and (3) describe affective states during PA according to the context.MethodsAn intensive longitudinal sensor-triggered event-based EMA study was conducted with 92 Belgian older adults (65 + years). During seven days, participants were monitored using a Fitbit, which triggered a smartphone-based questionnaire on the event-based EMA platform 'HealthReact' after a five-minute walk. Participants reported on contexts and affective (positive/negative valence) and physical states (pain and fatigue) during the PA event. Descriptive statistics and generalized mixed models were used for data analysis.ResultsOlder adults predominantly engaged in daily physical activities, such as walking for transport, leisure walking, and gardening, rather than structured exercise. They consistently reported high positive affect, low negative affect, and minimal physical complaints during PA. Furthermore, older adults mainly engage in physical activities alone, particularly in outdoor settings. Variations in contexts, affect, and fatigue were mostly driven by within-subject differences. The model showed significant differences across times of day, with negative affect being highest in the evening and fatigue lowest in the morning. Additionally, the physical and social context influenced negative affect (but not positive affect), with outdoor activities performed alone and indoor activities performed with others being associated with lower negative affect.ConclusionsWhile these findings could enhance the effectiveness of tailored PA interventions, it remains unclear whether the observed affective and physical states are causes or effects of PA, and whether the contexts in which the activities were performed align with older adults' preferences. Further research is needed to explore these relationships and to better understand older adults' preferred PA contexts.}},
  articleno    = {{30}},
  author       = {{Delobelle, Julie and Compernolle, Sofie and Vetrovsky, Tomas and Van Cauwenberg, Jelle and Van Dyck, Delfien}},
  issn         = {{1479-5868}},
  journal      = {{INTERNATIONAL JOURNAL OF BEHAVIORAL NUTRITION AND PHYSICAL ACTIVITY}},
  keywords     = {{Ecological momentary assessment (EMA),Sensor-triggered event-based experience sampling,Affect,Physical and social context,Physical activity,Older adults,AFFECTIVE RESPONSE,MENTAL-HEALTH,EXERCISE,TIME,PARTICIPATION,PREFERENCES,PREVALENCE,EXPERIENCE,ATTENTION,COGNITION}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{15}},
  title        = {{Contexts, affective and physical states and their variations during physical activity in older adults : an intensive longitudinal study with sensor-triggered event-based ecological momentary assessments}},
  url          = {{http://doi.org/10.1186/s12966-025-01724-9}},
  volume       = {{22}},
  year         = {{2025}},
}

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