Peak Torque and IEMG Activity of Quadriceps Femoris Muscle at Three Different Knee Angles in a Collegiate Population
نویسندگان
چکیده
منابع مشابه
Quadriceps femoris muscle fatigue in patients with knee osteoarthritis
The purpose of this study was to characterize quadriceps femoris muscle fatigue of both lower extremities in patients with knee osteoarthritis (OA). Sixty-two subjects (mean age 68.2 years, standard deviation [SD] ± 7.9 years) with knee OA participated in the study. Significantly higher knee pain was reported in the involved knee than in the contralateral knee, as determined by a visual analog ...
متن کاملThe Effects of Knee Angle on Quadriceps Femoris Activation and Knee Extensor Torque
It has previously been demonstrated that the maximal voluntary contraction (MVC) torque for the quadriceps femoris (QF) muscle occurs within the mid-range (i.e., 45 – 90 deg flexion) of knee range of motion (Ng, et al, 1994; Suter and Herzog, 1997; Welsch et al, 1998). Decreases in voluntary torque generation at the extremes of the functional joint range of motion (0 – 90 deg flexion) may be at...
متن کاملInitial phase of maximal voluntary and electrically stimulated knee extension torque development at different knee angles.
We investigated the capacity for torque development and muscle activation at the onset of fast voluntary isometric knee extensions at 30, 60, and 90 degrees knee angle. Experiments were performed in subjects (n = 7) who had high levels (>90%) of activation at the plateau of maximal voluntary contractions. During maximal electrical nerve stimulation (8 pulses at 300 Hz), the maximal rate of torq...
متن کاملAnalysis of three different equations for predicting quadriceps femoris muscle strength in patients with COPD *
OBJECTIVE To compare equations for predicting peak quadriceps femoris (QF) muscle force; to determine the agreement among the equations in identifying QF muscle weakness in COPD patients; and to assess the differences in characteristics among the groups of patients classified as having or not having QF muscle weakness by each equation. METHODS Fifty-six COPD patients underwent assessment of p...
متن کاملQuadriceps femoris muscle torques and fatigue generated by neuromuscular electrical stimulation with three different waveforms.
BACKGROUND AND PURPOSE Neuromuscular electrical stimulation is used by physical therapists to improve muscle performance. Optimal forms of stimulation settings are yet to be determined, as are possible sex-related differences in responsiveness to electrical stimulation. The objectives of the study were: (1) to compare the ability of 3 different waveforms to generate isometric contractions of th...
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ژورنال
عنوان ژورنال: Journal of Exercise Science & Fitness
سال: 2011
ISSN: 1728-869X
DOI: 10.1016/s1728-869x(11)60005-1