Hip muscle strength, dynamic balance and functional capacity of community-dwelling older adults aged 60 and older: A cross-sectional study

The objective of the present study was to evaluate the association of hip muscle strength, dynamic balance and functional capacity in the older adults aged 60 to 79 years and older adults aged 80 years and older. A total of 191 community-dwelling older adults participated in this study. Isometric muscle strength was quantified as the peak torque (PT), measured using an isokinetic dynamometer. Functional capacity was determined by the forward step test (ST) and the dynamic balance by the tandem gait (TG) test. The hip flexor, extensor, abductor and adductor PT in the older adults aged 60 to 79 years had a positive influence on the execution of the step test (p < 0.05). The peak adductor torque did not show a significant association with tandem gait (p = 0.649). In older adults aged 80 years and older, the peak adductor torque was the only one that showed an association with the performance of the ST (p = 0.001) and TG (p = 0.024) tests. The hip adductors may have a higher contribution in adults aged 80 years and older during the execution of clinical tests. These findings are relevant to clinical practice as they can help in the development of appropriate physical exercise programs targeting older adults of different age groups.