OBJECTIVE To compare: (i) muscle strength, sprint power and maximal aerobic capacity; and (ii) the correlations between these variables in adults with and without cerebral palsy. DESIGN Cross-sectional study. SUBJECTS Twenty adults with and 24 without cerebral palsy. METHODS Isometric and isokinetic knee extension strength, sprint power (mean power over the 30s (P30)), peak aerobic power ...

BACKGROUND Many studies have compared different training methods for improving muscular performance, but more investigations need to be directed to the restoration of muscular imbalances. OBJECTIVE To determine the most effective training for altering strength ratios in the shoulder rotator cuff. METHODS Forty eight physical education students were randomly assigned to four groups (12 per g...

OBJECTIVE We studied the relation between dynamic (isokinetic) strength and the batch-assorting strategy to initiate a manual materials-handling task and the effect of knowledge of strength on that relation. BACKGROUND The debated, complex relationship between muscular strength and the risk of injury can be better understood from a behavioral perspective by examining performance strategies in...

OBJECTIVES To ascertain whether detailed isokinetic knee muscle testing reflects the results of other functional measurements in footballers and to look for any correlations between quadriceps tendon thickness and knee strength. METHODS Ultrasonographic evaluation of the quadriceps tendon (Hitachi EUB-405), isokinetic knee testing (Biodex System 3), and sprint measurements using telemetric ph...

Isometric handgrip force, isokinetic knee flexion and extension torque, and anthropometric data were obtained on 67 older men and women (ranging in age from 45 to 75 years, mean 59.7 years). Hydrostatic and skinfold estimates of lean body mass were quite closely correlated with each other in this sample (r = 0.93). Handgrip force, isokinetic knee flexion and extension torque, and lean mass all ...

In order to quantify the effects of external compression on the muscular strength, fatigue, and activity through electromyography (EMG) and mechanomyography (MMG) during isokinetic muscle actions. 66.4 N and 85.8 N tension-length curves (used as moderate and high compression, respectively) were obtained with standard weights through a force transducer. All subjects (n = 12) performed 5 seconds ...

OBJECTIVE To investigate the effects of moderate-intensity and low frequency exercise on resting serum testosterone and cortisol levels, resting heart rate, and isokinetic strength among healthy sedentary young men. DESIGN A randomized controlled study. Forty sedentary young men aged 18 to 25 years old, pedaled 50 minutes on a bicycle ergometry at 60% of maximal effort once a week for 12 week...

OBJECTIVE To investigate the effects of glenohumeral internal rotation deficit (GIRD) on the isokinetic strength, body pain, and the quality of life in male high school baseball players of Korea. METHODS Fifty-six male high school baseball players were divided into either group A (GIRD≥20°, n=12) or group B (GIRD<20°, n=44). The range of motion in the shoulder and the isokinetic strength were...

Maximal weight-lifting performance, isometric strength, isokinetic torque, whole muscle and individual fiber cross-sectional areas, and muscle evoked contractile properties were assessed in 14 elderly males before and after 12 wk of weight-lifting training. Dynamic elbow flexion training of one arm resulted in a significant 48% mean increase in the maximal load that could be lifted once (1 RM) ...

CONTEXT Several groups have undertaken studies to evaluate the physiologic effects of whole-body vibration (WBV). However, the value of WBV in a training program remains unknown. OBJECTIVE To investigate whether a WBV program results in a better strength and postural control performance than an equivalent exercise program performed without vibration. DESIGN Randomized, controlled trial. S...