Exercise Using Isokinetic Strength Training Equipment and Physical Function Improvement

Objective: This study aims to explore the relationship between isokinetic strength training and the enhancement of physical function in older adults.It also evaluates the effectiveness of isokinetic strength training equipment.Method: This study randomly divided twenty healthy adults into two groups.The experimental group engaged in isokinetic strength training for 30 minutes, three times a week, over a four-week period.In contrast, the control group did not participate in any exercise regimen.We assessed several outcome measures including physical functions (sit-to-stand test, flexibility, Timed Up and Go test), grip strength, balance, thigh circumference, the Korean version of the Patient Health Questionnaire-9 (PHQ-9), and the Korean version of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC).Additionally, the experimental group's self-perceived improvement in lower limb condition was evaluated using the Global Rating of Change (GROC) scale.Results: The experimental group showed significant improvements compared to the control group in various aspects: reduced sit-to-stand test duration (7.00±2.05seconds), increased flexibility (4.69±3.90cm), improved grip strength (1.54±1.74kg), increased thigh circumference (left: 1.29±1.19cm, right: 1.19±1.27cm), enhanced Timed Up and Go test performance (-1.47±0.86seconds), better balance (eyes open stance: -8.08±4.03cm, eyes closed stance: -0.27±0.13cm/s), and a decrease in depression severity (-0.15±1.51points).Furthermore, significant increases were observed in the experimental group's maximal isokinetic strength at 90°/s for both flexion (19.62±7.03Nm) and extension (19.60±14.65 Nm) over the study period. Conclusion:The findings suggest that isokinetic strength training equipment can significantly enhance physical functions in seniors when incorporated into an exercise regimen.