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Age-related changes in hip abductor and adductor joint torques
Marjorie E Johnson1, Marie-Laure Mille, Kathy M Martinez
1Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, IL, USA.
Objective:
To test the hypothesis that older age significantly affects hip abduction and adduction joint torque-time generating capability in women.
Design:
Cross-sectional study, wherein subjects were tested in a supported standing position.
Setting:
University human performance laboratory.
Participants:
Seventy-six healthy, adult women (38 young; 38 old).
Interventions:
Not applicable.
Main Outcome Measures:
The dependent variables were peak isometric torque and its corresponding torque rate and average peak isokinetic torque. Age group differences were assessed by analysis of variance.
Results:
Isometric peak torques were significantly lower in older women (P
Conclusions:
The hip abductor and adductor torques showed relatively marked age-related changes. To enhance balance assessment and treatment, and to reduce the risk of falls and related injuries in older women, greater focus should be placed on understanding the role of joint torque-time changes on frontal plane balance control.