What question did this study set out to answer?

To investigate the associations between sedentary behaviour and muscle characteristics in older adults, independent of physical activity.

May 14, 2026Experimental GerontologyOpen Access

Waking-hours sedentary behaviour and its PA-independent associations with muscle strength, specific force, activation capacity, and fatigability in older adults

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Authors

JWJorgen A. WullemsManchester Metropolitan University SVSabine VerschuerenKU Leuven HDHans DegensManchester Metropolitan University

Discussion

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Implication

Randomized trial explores how sedentary time affects muscle strength and activation in older adults, suggesting strategies for muscle health preservation.

Key Points

To investigate the associations between sedentary behaviour and muscle characteristics in older adults, independent of physical activity.
Utilized a 3D-accelerometer to quantify sedentary behaviour and physical activity over 5-7 days.
Assessed gastrocnemius medialis muscle using isokinetic dynamometry, electromyography, and ultrasonography.
Conducted multiple linear regression analyses to determine associations between sedentary behaviour and muscle outcomes.
Sedentary behaviour patterns explained a significant portion of variance in optimal angle for maximal voluntary force (R² adj = 0.318, P < 0.01).
Identified 15 significant MLR associations between SB patterns and GM outcomes (R² 4.2% to 41%, P < 0.05).
Prolonged bouts of sedentary behaviour correlated with lower muscle strength and specific force.

Cite This Study

Wullems et al. (2026) studied this question.

synapsesocial.com/papers/6a05659da550a87e60a1dfeb https://doi.org/10.1016/j.exger.2026.113167

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Implication

Randomized trial explores how sedentary time affects muscle strength and activation in older adults, suggesting strategies for muscle health preservation.

Waking-hours sedentary behaviour and its PA-independent associations with muscle strength, specific force, activation capacity, and fatigability in older adults

Discussion

Member takes

Implication

Key Points

Cite This Study

Waking-hours sedentary behaviour and its PA-independent associations with muscle strength, specific force, activation capacity, and fatigability in older adults

Discussion

Member takes

Implication

Key Points

Cite This Study

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