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Digit Force Control In Older Adults: Benefits Of Resistance-Training?, Justin W.L. Keogh
Digit Force Control In Older Adults: Benefits Of Resistance-Training?, Justin W.L. Keogh
Justin Keogh
This paper seeks to review the effect on digit force control of: 1) the ageing process; and 2) the resistance-training in older adults. Significant age-related decreases in finger-pinch force control were observed in many but not all studies. Those that didn't report age-related differences involved bi-digit finger-pinch tasks requiring the production of constant forces only. This suggests that the age-related decline in force control becomes more pronounced the more challenging the force production task. While three studies reported that resistance-training improved older adults' digit force control capabilities, it is unclear if these improvements would occur in tasks that: 1) require …
Age-Related Differences In Inter-Digit Coupling During Finger Pinching, Justin Keogh, S. Morrison, R. Barrett
Age-Related Differences In Inter-Digit Coupling During Finger Pinching, Justin Keogh, S. Morrison, R. Barrett
Justin Keogh
The present study was designed to examine the finger-pinch force control, digit force sharing and digit coupling relations of 13 young and 14 older adults. Subjects performed four isometric tri-digit finger-pinch force production conditions reflecting all combinations of mean force level (20 and 40% MVC) and target shape (constant and sinusoidal). Older adults had significantly reduced force control, as indicated by their greater levels of absolute and relative force variability and targeting error than young adults. The age-related loss of relative force control was more pronounced at low (20% MVC) than high (40% MVC) forces, and to a lesser extent, …