Test-Retest and Minimal Detectable Change in the Assessment of Muscle Strength and Muscle Power in Upper and Lower Extremity Exercises in 9- to 14-Year-Old Children

The prescription of maximal dynamic strength training in both adults and children is based on the evaluation maximum strength, usually by one-repetition tests (1RM). This study examined test-retest reliability minimal detectable change (MDC) force test muscle power test. Forty-eight (9–14 years old) completed two test–retest sessions that involved a (1RM) for leg extension (LE) seated bench press (SBP). MDC values 1RM LE SBP ranged from 7.35 to 11.34 kg 6.84 7.92 kg, respectively. 30.32 63.20 Watt 22.65 29.53 Watt, In 9 14 old, increase along growth curve was different each group studied. repeatability excellent (ICC 0.974) better than (ICC, 0.954). 19.56% 12.93% SBP.