Sarc-F and muscle function in community dwelling adults with aged care service needs: baseline and post-training relationship

PeerJ

article

Justin W.L. Keogh¹  Tim Henwood¹  Paul A. Gardiner⁷  Anthony G. Tuckett⁹  Sharon Hetherington^1,11  Kevin Rouse^1,11  Paul Swinton^1,12 

[1] Faculty of Health Sciences and Medicine, Bond University;Human Potential Centre, Auckland University of Technology;Kasturba Medical College;Cluster for Health Improvement, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast;Southern Cross Care SA and NT;School of Human Movement and Nutritional Science, University of Queensland;Faculty of Medicine, University of Queensland;Mater Research Institute, University of Queensland;School of Nursing, Midwifery and Social Work, University of Queensland;College of Nursing, Yonsei University;The Chermside Senior Citizens Centre;School of Health Sciences, Robert Gordon University

关键词: Aged care;    Exercise;    Physical performance;    Sarcopenia;    Screening;   

DOI  :  10.7717/peerj.8140

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundThis study sought to better understand the psychometric properties of the SARC-F, by examining the baseline and training-related relationships between the five SARC-F items and objective measures of muscle function. Each of the five items of the SARC-F are scored from 0 to 2, with total score of four or more indicative of likely sarcopenia.MethodsThis manuscript describes a sub-study of a larger step-wedge, randomised controlled 24-week progressive resistance and balance training (PRBT) program trial for Australian community dwelling older adults accessing government supported aged care. Muscle function was assessed using handgrip strength, isometric knee extension, 5-time repeated chair stand and walking speed over 4 m. Associations within and between SARC-F categories and muscle function were assessed using multiple correspondence analysis (MCA) and multinomial regression, respectively.ResultsSignificant associations were identified at baseline between SARC-F total score and measures of lower-body muscle function (r =  − 0.62 to 0.57; p ≤ 0.002) in 245 older adults. MCA analysis indicated the first three dimensions of the SARC-F data explained 48.5% of the cumulative variance. The initial dimension represented overall sarcopenia diagnosis, Dimension 2 the ability to displace the body vertically, and Dimension 3 walking ability and falls status. The majority of the 168 older adults who completed the PRBT program reported no change in their SARC-F diagnosis or individual item scores (56.5–79.2%). However, significant associations were obtained between training-related changes in SARC-F total and item scores and changes in walking speed and chair stand test performance (r =  − 0.30 to 0.33; p < 0.001 and relative risk ratio = 0.40–2.24; p < 0.05, respectively). MCA analysis of the change score data indicated that the first two dimensions explained 32.2% of the cumulative variance, with these dimensions representing whether a change occurred and the direction of change, respectively.DiscussionThe results advance our comprehension of the psychometric properties on the SARC-F, particularly its potential use in assessing changes in muscle function. Older adults’ perception of their baseline and training-related changes in their function, as self-reported by the SARC-F, closely matched objectively measured muscle function tests. This is important as there may be a lack of concordance between self-reported and clinician-measured assessments of older adults’ muscle function. However, the SARC-F has a relative lack of sensitivity to detecting training-related changes, even over a period of 24 weeks.ConclusionsResults of this study may provide clinicians and researchers a greater understanding of how they may use the SARC-F and its potential limitations. Future studies may wish to further examine the SARC-F’s sensitivity of change, perhaps by adding a few additional items or an additional category of performance to each item.

【 授权许可】

CC BY