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 < 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.
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 < 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.
Authors: JoÃo Pedro Nunes; Paolo M Cunha; Melissa Antunes; Bruna D V Costa; Witalo Kassiano; Gabriel Kunevaliki; Alex S Ribeiro; Edilson S Cyrino Journal: Int J Exerc Sci Date: 2020-12-01
Authors: Dahan da Cunha Nascimento; Jonato Prestes; Joyce de Sousa Diniz; Pedro Rodrigues Beal; Vicente Paulo Alves; Whitley Stone; Fabiani Lage Rodrigues Beal Journal: J Exerc Rehabil Date: 2020-10-27
Authors: Inge Petersen; Nancy L Pedersen; Taina Rantanen; William S Kremen; Wendy Johnson; Matthew S Panizzon; Lene Christiansen; Carol E Franz; Matt McGue; Kaare Christensen; Nayla R Hamdi; Robert F Krueger; Chandra Reynolds Journal: Behav Genet Date: 2015-08-29 Impact factor: 2.805