Leg Angle and Muscular Efficiency in the Inverted Leg Press

Abstract

Thirty-seven high school boys were tested² for leg strength in an inverted leg press position at various angles of the leg on the thigh—100°, 110°, 120°, 130°, and 140°—to determine the best angle for optimum muscular efficiency. Reliability coefficients were high. The subjects extended their legs approximately 20° when exerting a maximum contraction. Between the starting angles, ranging from 100° to 140° measured with a protractor between the malleolus bone on the ankle, the head of the tibia on the knee, and the middle of the thigh, there was no significant difference in leg strength at any one of the angles.