Protein-Based Soy Flour Supplementation to Support the Effects of Weight Training on Muscle Hypertrophy

Abstract

Replacement supplements are required for optimal muscular hypertrophy in athletes. However, not all athletes can afford high-protein supplements due to their high expenses. The aim of this paper is to investigate and demonstrate the efficacy of protein-based supplements in enhancing the effects of resistance training on muscle growth. This method of study is a pseudo-experimental pre-test-posttest design. Using the entire sampling technique, 14 PPLP West Sumatra Indonesian Pencak silat athletes were used as study samples. The research procedure includes the measurement of thigh muscle circumference and thigh fat thickness of athletes (pretest), treatment of lunges 1-8 times, measurement of thigh muscle circumference and thigh fat thickness of athletes after eight treatments (midtest), and the size of thigh muscle circumference and thigh fat thickness after 9-16 lunges training sessions (posttest). Soy flour was administered depending on the athlete's average food intake, administered 30 minutes after the lunges exercise. The lunge training consisted of 16 sessions, moderate intensity (30% - 50% of maximum capacity), six repetitions, five sets, and 3 - 6 minute intervals. A tape meter was used to measure thigh muscle circumference and skinfold thickness to calculate thigh fat thickness using the formula MTMC = MTC - skinfold thickness (3.14 x TSF). The test utilized was the Kruskal-Wallis test. The examination of the data yielded a p-value of 0.03 < 0.05 and a percentage increase of 10.68%. In lunges training, high-protein soy flour can be administered as an alternative or replacement for supplements for muscular hypertrophy.