Effect of Leg Exercise Machine on Leg Muscle Strength in Elderly People with Problem in Lower Limb Movement: RCT
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Abstract
The objective of this study was to compare the pre- and post-exercise effects of a leg exercise machine on leg muscle strength in the elderly and to compare its effects with those of conservative exercise. The study involved 20 elderly participants aged 60-80 years with reduced leg muscles strength. They were divided into two groups: a conventional exercise group (n = 10) and leg exercise machine group (n = 10). Each group exercised three times per week for a period of eight weeks. Leg muscle strength was assessed using the 30-second chair stand test and a hand-held dynamometer before exercise, as well as at four and eight weeks after exercise. Data was analyzed using a two-way mixed model ANOVA, with post-hoc analysis performed using the Bonferroni test to compare differences within and between groups. A significant level of 0.05 was set for statistical analysis. The results showed a statistically significant increase in knee extensor muscle strength in the leg exercises machine group after exercise for fourth and eighth weeks (p < 0.05). Additionally, the conventional exercise group exhibited a statistically significant increase in hip extensor and hip flexor muscle strength after eight weeks of exercise (p < 0.05).
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