ArticleJournal of applied physiology (Bethesda, Md. : 1985)2021
Age-related differences in calf muscle recruitment strategies in the time-frequency domain during walking as a function of task demand.
Article in Journal of applied physiology (Bethesda, Md. : 1985), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Assessment of the severity of lower extremity peripheral arterial disease based on gastrocnemius surface electromyography and mechanomyography signals.Medical & biological engineering & computing · 2026Article
- How does age affect changes in leg muscle activation patterns and leg joint moments during prolonged walking?European journal of applied physiology · 2025Article
- Age- and step-length-dependent alterations in muscle synergies and joint coordination during unexpected gait termination.BMC geriatrics · 2025Article
- Skeletal Muscle Quantity Versus Quality in Heart Failure: Exercise Intolerance and Outcomes in Older Patients With HFpEF Are Related to Abnormal Skeletal Muscle Metabolism Rather Than Age-Related Skeletal Muscle Loss.Circulation. Heart failure · 2025Article
- Development and Assessment of a Soft Wearable for sEMG-Based Hand Grip Detection and Control of a Virtual Environment.Sensors (Basel, Switzerland) · 2025Article
- The neuromechanics of the soleus for fall prevention in aging.Frontiers in physiology · 2025Review
- Does free tendon length influence the injury risk of the Achilles tendon? A finite element study.Journal of experimental orthopaedics · 2024Article
- The effect of prolonged walking on leg muscle activity patterns and vulnerability to perturbations.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2023Article
- Different functional networks underlying human walking with pulling force fields acting in forward or backward directions.Scientific reports · 2023Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
Activation of the plantar flexors is critical in governing ankle push-off power during walking, which decreases due to age. However, electromyographic (EMG) signal amplitude alone is unable to fully characterize motor unit recruitment during functional activity. Although not yet studied in walking, EMG frequency content may also vary due to age-related differences in muscle morphology and neural signaling. Our purpose was to quantify plantar flexor activation differences in the time-frequency domain between young and older adults during walking across a range of speeds and with and without horizontal aiding and impeding forces. Ten healthy young (24.0 ± 3.4 yr) and older adults (73.7 ± 3.9 yr) walked at three speeds and walked with horizontal aiding and impeding force while muscle activations of soleus (SOL) and gastrocnemius (GAS) were recorded. The EMG signals were decomposed in the time-frequency domain with wavelet transformation. Principal component analyses extracted principal components (PCs) and PC scores. Compared with young adults, we observed that GAS activation in older adults:
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