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he objectives were to compare muscle strength between dominant and non-dominant
legs and to determine a relationship between leg muscle strength and time to complete five times sit-to-stand (FTSTS) in healthy Thai community dwelling elderly people (n= 50) with mean aged of 67.90 ± 5.79 yr (60-81 yr). Leg muscles strength were measured by Hand-held dynamometer (HHD). The results showed no significant difference in muscle strength between dominant and non-dominant legs. The mean values for muscle strength (kilogram, kg) of hip flexors 12.81 ± 2.35, hip extensors 11.19 ± 2.59, hip abductors 12.03 ± 2.55, knee extensors 10.54 ± 1.73, knee flexors 10.79 ± 2.43, ankle dorsi-flexors 12.19 ± 2.04, and ankle plantar-flexors 11.80 ± 2.02 were reported. The average time of FTSTS was 11.13 ± 2.61 sec. Time to complete FTSTS was statistically significant correlated with leg muscle strength of hip flexors (r = -.299, p = 0.031), hip extensors (r = -.417, p = 0.002), and knee flexors (r = -.367, p = 0.007). This finding showed that hip flexors, hip extensors, and knee flexors muscle strength could affect the ability to get up from a chair. The stronger leg muscles, the less time to get up from a chair. In conclusion, strong leg muscles might improve sit-to-stand performance in Thai elderly people.
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