Poor correlation between handgrip strength and isokinetic performance of knee flexor and extensor muscles in community-dwelling elderly women

• Published in: Geriatrics & gerontology international 2014-01, Vol.14 (1), p.185-189
• Main Authors: Felicio, Diogo Carvalho, Pereira, Daniele Sirineu, Assumpção, Alexandra Miranda, de Jesus-Moraleida, Fabianna Resende, de Queiroz, Barbara Zille, da Silva, Juscelio Pereira, de Brito Rosa, Naysa Maciel, Dias, João Marcos Domingues, Pereira, Leani Souza Máximo
• Format: Article
• Language: English
• Subjects: Aged; Aging - physiology; Cross-Sectional Studies; elderly; Female; Geriatric Assessment - methods; Geriatrics; Hand Strength - physiology; handgrip; Humans; isokinetic muscle performance; Mobility; Motor ability; muscle strength; Muscle Strength Dynamometer; Muscle, Skeletal - physiology; sarcopenia; Studies; Womens health
• ISSN: 1444-1586; 1447-0594
• DOI: 10.1111/ggi.12077

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 Biodex System 3 Pro. 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