2. 1. 1. Measurements
Subjects were then randomly assigned to one of five test groups: 1, control (no stretching); 2, 20% of MVIC; 3, 40% of MVIC; 4, 60% MVIC; 5, 80% MVIC. The subjects were tested each day for five days. Each subject's hamstring flexibility was measured twice a day, once before and once after stretching using a 12 inch goniometer. All subjects participated in a training session on a Biodex System-3 isokinetic machine one week before actual testing to determine MVIC in a stretch position.