Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPBRECH, Guilherme CarlosCIOLAC, Emmanuel GomesSECCHI, Leonardo Luiz BarrettiALONSO, Angelica CastilhoGREVE, Julia Maria D'Andrea2017-11-272017-11-272011MATURITAS, v.70, n.4, p.379-382, 20110378-5122https://observatorio.fm.usp.br/handle/OPI/23258Objective: To analyze the effects of motor learning on knee extension-flexion isokinetic performance during clinical isokinetic evaluation of postmenopausal women. Methods: One-hundred and twenty postmenopausal women (60.3 +/- 3.2 years; BMI = 27.6 +/- 4.7 kg/m(2)) without knee pain or injury and that never underwent isokinetic testing, were submitted to two bilateral knee extension-flexion (concentric-concentric) isokinetic evaluation (5 repetitions) at 60 /s (Biodex (TM) Multi-joint System 3 dynamometer). The tests were first performed in the dominant leg, with a 1-min recovery between them, and after a standardized warm-up that included 3 submaximal isokinetic repetitions. The same procedure was repeated in the non-dominant leg. Peak torque (PTQ) was adjusted for body weight (PTQ/BW), total work (TW), coefficient of variation (CV) and agonist/antagonist (agon/antag) ratio was compared between tests. Results: Subjects showed greater levels (P < 0.001) of PTQ PTQ/BW and TW, and lower CV levels (P < 0.01) in test 2 of both legs. Agon/antag ratio did not change significantly between tests. Conclusions: PTQ PTQ/BW, TW and CV improved in the second knee extension flexion isokinetic testing of postmenopausal women. The results suggests that performing two tests, even with a short period of recovery between them, could be considered for reducing motor learning effects on clinical isokinetic evaluation of knee joint in postmenopausal women.engrestrictedAccessPostmenopausalIsokineticKneeMuscle strengthElderlymuscle strengthknee extensionolder-adultstest-retestreliabilityprotocolcontractionsflexionpowermenarticleCopyright ELSEVIER IRELAND LTD10.1016/j.maturitas.2011.09.004Geriatrics & GerontologyObstetrics & Gynecology1873-4111