2.3.7. Maximal Voluntary Isometric Contraction
muscle contractions
A strength assessment of the quadriceps and hamstring musculature was completed via MVIC of leg extension and flexion on the dominant leg. Leg dominance was determined by inquiring which side the participant would use to kick a ball at a target. The MVICs were performed using an isokinetic dynamometer (HUMAC NORM, CSMiSolutions, Stoughton, MA, USA). Participants were tested in a seated position at a 90° chair-back angle. A velcro strap was placed over the most distal portion of the thigh of the dominant leg performing the repetitions, directly superior to the knee joint to allow for greater stability and limit excessive movement of the leg during muscle contractions. The full range of motion (ROM) of the knee joint was first determined from a starting angle of 90° to full extension at 0°. Participants completed three repetitions of maximal isometric leg extension at a knee joint angle of 60°, with 0° being full extension [