Investigation of Relationships with Optimal Leg Distance, Muscle Activations and 1 Repeatition Maximum Squat in Isometric Lunge Movement
Project no. 833 · Status: Kapanmış · 2014
Summary
The Lunge and Squat movement are preferred by many athletes in training programs for strength and power development for the lower extremity. However, the biomechanics of the Lunge movement are very similar to walking and running, and in this respect it is different from Squat. In this point, the aim of this study is to determine the optimal foot distance in the isometric lunge movement and to reveal its relationship with one repetition maximum (1RM) squat. Twelve male athlete (age; 22,50 ± 1,98 years, height: 179,17 ± 2,21 cm, body weight; 77,92 ± 4,75 kg) were included in the study. Isometric lunge was applied to the participants in three different foot distance (1 = leg length, 2 = 70% of leg length, 3 = 130% of leg length). During these applications, force data were measured by load cells from anterior and posterior legs and by using the wireless EMG with sEMG method muscle activations were measured from the anterior leg. As a result of the measurements, the highest force data and the most effective muscle activation were determined in 70% of the leg length. In the isometric lunge movement applied in 70% of the leg length, the force production of the front leg and the activation levels of the vastus medialis and vastus lateralis muscles were higher than the other two applications.