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Association between relative free-living sit-to-stand transition thigh angular velocities and difficulties in
Antti Löppönen1, Kaisa Koivunen2, Taina Rantanen2
1Faculty of Sport and Health Sciences and Gerontology Research Center, University of Jyväskylä, PO Box 35, Jyväskylä, FI-40014, Finland. antti.ej.lopponen@jyu.fi.
Performing sit-to-stand (STS) transitions with high effort may indicate emerging mobility issues in older adults. This high intensity STS performance is linked to difficulties with walking and stair negotiation.
Area of Science:
- Gerontology
- Biomechanics
- Mobility Research
Background:
- Sit-to-stand (STS) transitions are fundamental daily activities for older adults.
- High-effort STS execution relative to capacity may signal underlying functional decline.
Purpose of the Study:
- To investigate the association between relative free-living STS thigh angular velocity and difficulties in activities of daily living (ADL), instrumental activities of daily living (IADL), walking, and stair negotiation.
- To determine if increased STS effort predicts functional limitations in older individuals.
Main Methods:
- Cross-sectional study of 230 older adults (79-89 years).
- STS capacity assessed via instrumented five-times STS test.
- Free-living STS transitions monitored over four days using accelerometers; data analyzed with Wilcoxon rank-sum test and logistic regression.
Main Results:
- 47% reported ADL/IADL difficulties, 26% walking difficulties, and 17% stair negotiation difficulties.
- Individuals with functional difficulties exhibited higher relative STS capacity utilization (p < 0.05).
- Elevated relative free-living STS thigh angular velocity correlated with walking and stair difficulties (OR 1.20-1.40, p < 0.05) after adjustment.
Conclusions:
- Performing STS transitions at high intensity may serve as an early indicator of developing mobility impairments.
- Monitoring STS dynamics offers potential for early detection of functional decline in aging populations.
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