THE BENEFITS OF USING ECCENTRIC CONTRACTIONS IN THE DEVELOPMENT OF THE HAMSTRINGS MUSCLES
THE BENEFITS OF USING ECCENTRIC CONTRACTIONS IN THE DEVELOPMENT OF THE HAMSTRINGS MUSCLES

Author(s): Alexandru Chivăran
Subject(s): Education
Published by: Discobolul Publishing House
Keywords: muscle; performance; isoinertial;
Summary/Abstract: The football game presents a higher risk of injuries compared with other team sports. Due to the nature of the sport, most injuries in football are localized in the lower extremities (almost 70%), with the knee being the most common site with 54% of the injuries. This study aims to obtain the best possible coordination between the tight muscles, increase muscular strength, and reduce the risk of injuries Material and methods: The study included 15 players, average age of 15 years and 6 months, football players. The training included 3 sessions per week of isoinertial training. Each player performed 3 sets of 10 repetitions with a 20-seconds pause between sets on each leg. The isoinertial exercises were performed with the help of the Desmotec device. The recorded data obtained during the training were expressed in Watts (W), and processed with the dedicated software of the Desmotec system. Results: The average power recorded for the right hamstring was 26.3W for concentric contraction and 40.2W for the eccentric contraction, on the left hamstring the average power recorded was 27.06W for concentric contraction and 42.93W for the eccentric contraction. Conclusions: The analysis of these results shows that the eccentric muscle contraction develops more power than the concentric one. Even though most of the players are right-footed, higher values on the left foot were obtained. The goal is to obtain a better balance between the tight's agonist and antagonist muscle groups.

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