Resumen
The purpose of this study was to determine whether the bilateral deficit (BLD) for maximal voluntary force (MVF) and rate of force development (RFD) influences sit-to-stand in older postmenopausal women. Fourteen women performed unilateral and bilateral maximal voluntary contractions during isometric leg-extension. The MVF and RFD over consecutive 50 ms periods (0–50, 50–100 and 100–150 ms) after force onset and the time to sit-to-stand test were calculated. There was only a BLD for RFD 0–50 ms and 50–100 ms. The time of sit-to-stand was moderately correlated to BLD for RFD 0–50 ms (r = 0.505; 95% CI: −0.035 to 0.817; P = 0.06), but after controlling for physical activity level the relationship was stronger and statistically significant (r = 0.605; 95% CI: 0.109 to 0.859; P = 0.029). These results suggest that the BLD for explosive force (0–50 ms) might represent a performance-limiting factor for sit-to-stand transfer in postmenopausal women and could be dependent of the physical activ...
