Abstract:
OBJECTIVE:To examine the effects of acute fatigue of the hip abductors on the control of balance in young and older women. DESIGN:Pretest-posttest. SETTING:University research laboratory. PARTICIPANTS:Healthy young women (n=20; age, 23.0+/-1.5y; height, 166.52+/-4.5 cm; mass, 65.33+/-10.5 kg) and community-dwelling older women (n=20; age, 71.65+/-7.2y; height, 162.31+/-3.8 cm; mass, 71.16+/-11.6 kg) without a fall history. INTERVENTION:Measurements of control of single-limb balance before and after fatiguing the hip abductors of the dominant leg. MAIN OUTCOME MEASURE:Performance on 3 clinical assessments of control of balance: the modified Functional Reach Test in the forward, left, and right directions; the Lower-Extremity Reach Test in forward and lateral directions; and the Single-Limb Stance Time Test (SLSTT). RESULTS:Although the younger subjects showed a significantly greater control of balance than the older women in most tests, control of balance after acute fatigue failed to show a significant decline in either age group. The only exception to this was the SLSTT in the younger women in whom a significant 26% decline was noted (P<.05). CONCLUSIONS:Acute fatigue of the hip abductors did not result in a decreased control of balance in healthy young or older women without fall history. Despite considerable changes in movement strategies used to complete the postfatigue tests of balance, quantitative measures of balance did not decrease.
journal_name
Arch Phys Med Rehabiljournal_title
Archives of physical medicine and rehabilitationauthors
Bellew JW,Panwitz BL,Peterson L,Brock MC,Olson KE,Staples WHdoi
10.1016/j.apmr.2009.01.025subject
Has Abstractpub_date
2009-07-01 00:00:00pages
1170-5issue
7eissn
0003-9993issn
1532-821Xpii
S0003-9993(09)00270-6journal_volume
90pub_type
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journal_title:Archives of physical medicine and rehabilitation
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