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Physical Treatments: Specific Physical Therapy Journal. 2015; 5 (1): 19-24
em Inglês | IMEMR | ID: emr-179194

RESUMO

Purpose: previous studies have suggested that thigh muscle imbalance may be a risk factor for knee injury. The Present study aimed to compare Hamstring-to-Quadriceps [H:Q] Ratio and dynamic stability between the two lower limbs of elderly people


Methods: This was a correlational study and by nonprobability sampling 19 healthy community doweling elderly [age=65.93 +/- 3.53 yrs.] participated in this study. Dynamic strength and power of knee extensor and flexor muscles and H:Q ratios of each lower limb were measured by isokinetic dynamometer. Dynamic stability was evaluated using the biodex balance system. Paired t test and Wilcoxon test were performed to compare power, strength, H:Q ratio, and balance index of 2 sides. Data analysis were conducted using SPSS software, version 19


Results: Strength and power between two legs was significantly asymmetrical. There was no significant difference in H:Q strength ratios [P=0.057] between the two sides although this ratio was 14.42% greater in weaker leg. Antero-posterior stability index [APSI] was significantly different between two legs [P=0.03], however there is no significant difference in overall stability index [OSI] and medio-lateral stability index [MLSI]


Conclusion: The asymmetry between limbs or weakness of the quadriceps and/or hamstring muscle strength and the resultant change in H:Q ratio should be considered in rehabilitation of older adults

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