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Poor physical function in elderly women in low-level aged care is related to muscle strength rather than to measures of sarcopenia.
Clin Interv Aging 2011; 6:67-76CI

Abstract

PURPOSE

To determine the prevalence of sarcopenia and investigate relationships among body composition, muscle strength, and physical function in elderly women in low-level aged care.

SUBJECTS AND METHODS

Sixty-three ambulatory women (mean age 86 years) participated in this cross-sectional study where body composition was determined by dual energy X-ray absorptiometry (DXA); ankle, knee, and hip strength by the Nicholas Manual Muscle Tester; and physical function by 'timed up and go' (TUG) and walking speed (WS) over 6 meters. Body composition data from a female reference group (n = 62, mean age 29 years) provided cut-off values for defining sarcopenia.

RESULTS

Elderly women had higher body mass index (P < 0.001), lower lean mass (P < 0.001), and higher fat mass (P < 0.01) than the young reference group. Only a small proportion (3.2%) had absolute sarcopenia (defined by appendicular skeletal muscle mass/height squared) whereas 37% had relative sarcopenia class II (defined by percentage skeletal muscle mass). Scores for TUG and WS indicated relatively poor physical function, yet these measures were not associated with muscle mass or indices of sarcopenia. In multivariate analysis, only hip abductor strength predicted both TUG and WS (both P = 0.01).

CONCLUSION

Hip strength is a more important indicator of physical functioning than lean mass. Measurement of hip strength may therefore be a useful screening tool to detect those at risk of functional decline and requirement for additional care. Further longitudinal studies with a range of other strength measures are warranted.

Authors+Show Affiliations

Nutrition and Dietetics Department, Monash University, Victoria, Australia;No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21472094

Citation

Woods, Julie L., et al. "Poor Physical Function in Elderly Women in Low-level Aged Care Is Related to Muscle Strength Rather Than to Measures of Sarcopenia." Clinical Interventions in Aging, vol. 6, 2011, pp. 67-76.
Woods JL, Iuliano-Burns S, King SJ, et al. Poor physical function in elderly women in low-level aged care is related to muscle strength rather than to measures of sarcopenia. Clin Interv Aging. 2011;6:67-76.
Woods, J. L., Iuliano-Burns, S., King, S. J., Strauss, B. J., & Walker, K. Z. (2011). Poor physical function in elderly women in low-level aged care is related to muscle strength rather than to measures of sarcopenia. Clinical Interventions in Aging, 6, pp. 67-76. doi:10.2147/CIA.S16979.
Woods JL, et al. Poor Physical Function in Elderly Women in Low-level Aged Care Is Related to Muscle Strength Rather Than to Measures of Sarcopenia. Clin Interv Aging. 2011;6:67-76. PubMed PMID: 21472094.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Poor physical function in elderly women in low-level aged care is related to muscle strength rather than to measures of sarcopenia. AU - Woods,Julie L, AU - Iuliano-Burns,Sandra, AU - King,Susannah J, AU - Strauss,Boyd J, AU - Walker,Karen Z, Y1 - 2011/03/23/ PY - 2011/03/22/received PY - 2011/4/8/entrez PY - 2011/4/8/pubmed PY - 2011/8/17/medline KW - aged care KW - body composition KW - muscle strength KW - sarcopenia SP - 67 EP - 76 JF - Clinical interventions in aging JO - Clin Interv Aging VL - 6 N2 - PURPOSE: To determine the prevalence of sarcopenia and investigate relationships among body composition, muscle strength, and physical function in elderly women in low-level aged care. SUBJECTS AND METHODS: Sixty-three ambulatory women (mean age 86 years) participated in this cross-sectional study where body composition was determined by dual energy X-ray absorptiometry (DXA); ankle, knee, and hip strength by the Nicholas Manual Muscle Tester; and physical function by 'timed up and go' (TUG) and walking speed (WS) over 6 meters. Body composition data from a female reference group (n = 62, mean age 29 years) provided cut-off values for defining sarcopenia. RESULTS: Elderly women had higher body mass index (P < 0.001), lower lean mass (P < 0.001), and higher fat mass (P < 0.01) than the young reference group. Only a small proportion (3.2%) had absolute sarcopenia (defined by appendicular skeletal muscle mass/height squared) whereas 37% had relative sarcopenia class II (defined by percentage skeletal muscle mass). Scores for TUG and WS indicated relatively poor physical function, yet these measures were not associated with muscle mass or indices of sarcopenia. In multivariate analysis, only hip abductor strength predicted both TUG and WS (both P = 0.01). CONCLUSION: Hip strength is a more important indicator of physical functioning than lean mass. Measurement of hip strength may therefore be a useful screening tool to detect those at risk of functional decline and requirement for additional care. Further longitudinal studies with a range of other strength measures are warranted. SN - 1178-1998 UR - https://www.unboundmedicine.com/medline/citation/21472094/Poor_physical_function_in_elderly_women_in_low_level_aged_care_is_related_to_muscle_strength_rather_than_to_measures_of_sarcopenia_ L2 - https://dx.doi.org/10.2147/CIA.S16979 DB - PRIME DP - Unbound Medicine ER -