Assessment of functional sit-to-stand muscle power: Cross-sectional trajectories across the lifespan

The 30-s sit-to-stand (STS) muscle power test is a valid to assess in older people; however, whether it may be used trajectories of lower-limb through the adult lifespan not known. This study evaluated pattern and time course variations relative, allometric specific STS throughout lifespan. Subjects participating Copenhagen Sarcopenia Study (729 women 576 men; aged 20 93 years) were included. Lower-limb was assessed with version test. Allometric, relative calculated as absolute normalized height squared, body mass leg lean by DXA, respectively. Relative tended increase (0.08 ± 0.05 W·kg−1·yr−1; p = 0.082) increased men (0.14 0.07 0.046) between 30 years, followed slow decline (−0.05 W·kg−1·yr−1 −0.06 0.08 W·kg−1·yr−1, respectively; both > 0.05) 50 years. Then, declined at an accelerated rate up oldest age (−0.09 0.02 W·kg−1·yr−1) until 75 0.01 (both < 0.001). A lower observed (−0.04 0.039). Similar age-related patterns noted for power. appears provide feasible inexpensive tool monitor cross-sectional