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Poor correlation between handgrip strength and isokinetic performance of knee flexor and extensor muscles in community‐dwelling elderly women
Author(s) -
Felicio Diogo Carvalho,
Pereira Daniele Sirineu,
Assumpção Alexandra Miranda,
JesusMoraleida Fabianna Resende,
Queiroz Barbara Zille,
Silva Juscelio Pereira,
Brito Rosa Naysa Maciel,
Dias João Marcos Domingues,
Pereira Leani Souza Máximo
Publication year - 2014
Publication title -
geriatrics and gerontology international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.823
H-Index - 57
eISSN - 1447-0594
pISSN - 1444-1586
DOI - 10.1111/ggi.12077
Subject(s) - dynamometer , medicine , physical therapy , muscle strength , flexor muscles , physical medicine and rehabilitation , isometric exercise , engineering , aerospace engineering
Aim To investigate the correlation between handgrip strength and performance of knee flexor and extensor muscles determined using an isokinetic dynamometer in community‐dwelling elderly women. Methods This was a cross‐sectional study. Sample selection for the study was made by convenience, and 221 (71.07 ± 4.93 years) community‐dwelling elderly women were included. Knee flexor and extensor muscle performance was measured using an isokinetic dynamometer B iodex S ystem 3 P ro. The isokinetic variables chosen for analysis were peak torque, peak torque/bodyweight, total work/bodyweight, total work, average power, and agonist/antagonist ratio at the angular velocities of 60°/s and 180°/s. Assessment of handgrip strength was carried out using the Jamar dynamometer. Spearman's correlation coefficient was calculated to identify intervariable correlations. Results Only knee flexor peak torque (60°/s) and average power (60°/s), and knee extensor peak torque (180°/s) and total work (180°/s) were significantly ( P < 0.05), yet poorly, correlated with handgrip strength ( r < 0.30). Conclusion The majority of analyses did not show any correlation between variables assessed by isokinetic dynamometer and handgrip dynamometer. Caution is required when generalizing handgrip strength as a predictor of global muscle strength in community‐dwelling elderly women. Geriatr Gerontol Int 2014; 14: 185–189.