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Allen, Stephen P; Diaz, Gabriela B; Grabowski, Alena M
Medicine and science in sports and exercise, 2024-May-15, 2024-5-15, 20240515Journal Article
We determined the effects of shorter affected side crank arm lengths and cycling with two different prostheses on joint and crank power, asymmetry, and net efficiency. 12 participants with a TTA rode at 1.5 W·kg -1 with equal (175 mm) and shorter affected side crank arms (160, 165, 170 mm) using a daily-use prosthesis and CSP. We used statistical parametric mapping to determine differences in instantaneous joint and crank power between prostheses, and linear mixed-effects models to compare average joint and crank power, asymmetry, and net efficiency. Shorter affected side crank arm lengths reduced the magnitude of peak positive (p ≤ 0.001) and negative (p < 0.001) crank power on the affected side. Use of a CSP increased the magnitude of peak positive knee power (p < 0.001) and decreased the magnitude of peak negative crank power (p < 0.001) on the affected side compared to a daily-use prosthesis. Shorter affected side crank arm lengths while using a CSP reduced average hip joint (p = 0.014) and hip transfer (p = 0.025) power asymmetry from 35% to 20% and 118% to 62%, respectively. However, we found no significant differences in affected side average joint or crank power, knee joint or crank power asymmetry, or net efficiency. Cycling at 1.5 W·kg -1 with unequal crank arm lengths and CSPs improves hip joint power and hip transfer power asymmetry but does not alter crank asymmetry or net efficiency for recreational cyclists with a TTA.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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