2016, Volume 12

Impact of hydration on muscle contraction properties of elite competitive wrestlers



José Manuel Garcia1, Bibiana Calvo1, Luis Monteiro2, Luis Massuça2, Javier Portillo3, Javier Abian-Vicen1

1Faculty of Sports Science, University of Castilla–La Mancha, Spain, Toledo
2Faculty of Physical Education and Sports, Lusófona University, Spain, Lisbon
3Faculty of Sports Science, University of Castilla–La Mancha, Spain, Lisbon


Author for correspondence: Javier Abian-Vicen; Faculty of Sports Science, University of Castilla–La Mancha, Spain; email: javier.abian[at]uclm.es


Full text

Abstract

Background and Study Aim: The wrestling events included in the Olympic Games have different weight classes. Most wrestlers reduce their body weight a few days before competition so they can enter the right weight category. Often they use irrational nutritional strategies to make the weight, sometimes even drastically reducing their water intake. The purpose of this study was the knowledge about influence of pre-competition level of hydration on muscle contractile properties in elite wrestlers.

Material and Methods: Sixty three wrestlers participated in the study (27 female and 36 male). We sampled data from the weigh-in for an international competition, recording each athlete's hydration level using bioelectrical impedance analysis and using tensiomyography to analyze the contractile properties of the vastus medialis (VM), vastus lateralis (VL), rectus femoris and biceps femoris (BF) muscles of both legs. Among wrestlers 16 were classified as “less-hydrated” (total body water <60%) and 47 were classified as “more-hydrated” (total body water ≥60%).

Results: Less-hydrated wrestlers of both sexes had a greater (p<0.05) contraction time for all muscles and lower (p<0.05) maximal radial displacement of muscle belly for VL, VM and BF than those who were more-hydrated. Normalize response speed was significantly higher (p<0.05) in more-hydrated athletes of both sexes for both sides of VM and VL and for right side of BF.

Conclusion: Wrestlers who were less-hydrated at the weigh-in had poorer muscle contractile properties, due mainly to the additional contraction time and the lower radial muscular displacement. Years of reducing body weight by wrestlers based on irrational nutritional strategies may have negative effects on health in the future. Therefore, regular monitoring of the health of the wrestlers at the end of their sporting career is essential to develop recommendations for practice of training.


Key words: combat sport, irrational nutritional strategies, skeletal muscles, tensiomyography


Cite this article as:

AMA:

Garcia J, Calvo B, Monteiro L et al. Impact of hydration on muscle contraction properties of elite competitive wrestlers. ARCH BUDO. 2016;12

APA:

Garcia, J.M., Calvo, B., Monteiro, L., Massuça, L., Portillo, J., & Abian-Vicen, J. (2016). Impact of hydration on muscle contraction properties of elite competitive wrestlers. ARCH BUDO, 12

Chicago:

Garcia, José Manuel, Calvo Bibiana, Monteiro Luis, Massuça Luis, Portillo Javier, Abian-Vicen Javier. 2016. "Impact of hydration on muscle contraction properties of elite competitive wrestlers". ARCH BUDO 12

Harvard:

Garcia, J.M., Calvo, B., Monteiro, L., Massuça, L., Portillo, J., and Abian-Vicen, J. (2016). Impact of hydration on muscle contraction properties of elite competitive wrestlers. ARCH BUDO, 12

MLA:

Abian-Vicen, Javier et al. "Impact of hydration on muscle contraction properties of elite competitive wrestlers." ARCH BUDO, vol. 12, 2016

Vancouver:

Garcia JM, Calvo B, Monteiro L et al. Impact of hydration on muscle contraction properties of elite competitive wrestlers. ARCH BUDO 2016; 12