Age-related effects on lower extremities muscular strength, sit-to-stand, and functional reaching tests among community-dwelling elderly females

Ageing-related deterioration of the lower limb muscle strength could highly influence the functional performance of elderly adults, particularly females, which are more prone to injurious falls. Precise analyses on the effects of ageing on individual lower-limbs' muscle groups and their relationship with feeble functional performance could provide us with information that aid in designing preventive interventions. To this end, this study was designated to investigate the impacts of advancing age on lower limb muscles strength and consequently sit-to-stand and functional reaching performance among 34 community-dwellingelderly females (eighteen 60-69 years old and sixteen 70-79 years old). Results illustrated a significant decrease in produced relative peak torque (RPT) and power (RPP) values of ankle invertors, plantarflexors and knee extensor among 70-79 group, and their 5RSTS execution time significantly increased in comparison with 60-69 group (p