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Abstract
Background: Muscle strength is necessary for optimal posture and efficient movement to occur. It enables individuals to perform everyday activities without undue fatigue. Purpose: To establish a reference data of isokinetic strength measurements of shoulder flexors and extensors muscles by gender and age. Methods: One hundred healthy non-athletic children (50 boys and 50 girls) aged 8 to12 years participated in this study. They were classified according to their ages into five groups of equal number and were assessed using Biodex isokinetic dynamometer at two angular velocities (60 and 180 degrees per second.) for the dominant side (right side). The measured variables were peak torque, average power and maximum repetition total work