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The Journal of Sports Medicine and Physical Fitness 2022 May;62(5):633-40

DOI: 10.23736/S0022-4707.21.12734-3


lingua: Inglese

Jump performance and mechanics after a regular training bout in elite volleyball players

Igor SETUAIN 1, 2 , Guilherme P. BERRIEL 3, Daniel LANZ 2, Pedro SCHONS 3, Henrique B. OLIVEIRA 3, Rafael GRAZIOLI 3, Leonardo A. PEYRÉ-TARTARUGA 3, Ibai GARCIA-TABAR 4, Eduardo L. CADORE 3

1 Department of Health Sciences, Public University of Navarre, Pamplona, Spain; 2 TDN Clinical Rehabilitation Center, Pamplona, Spain; 3 School of Physical Education, Physiotherapy and Dance, Exercise Research Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; 4 Department of Physical Education and Sport, Faculty of Education and Sport, University of the Basque Country - UPV/EHU, Vitória, Spain

BACKGROUND: Volleyball is a complex intermittent sport characterized by short explosive technical movements, many of which involve vertical jumping. The assessment of mechanical jumping variables in relation to both injury prevention and performance enhancement through the use of wearable technologies is becoming a new training tool among professional volleyball players.
METHODS: The present study aimed to assess the vertical jumping mechanics before and after a controlled load (volume and intensity) of a routine volleyball training session among male professional players. Twelve male elite professional volleyball players (23.7±4.9 years, 198.1±6.2 cm, 92.2±10.3 kg) of national and international level belonging to the same Brazilian first league team were recruited. Biomechanical analysis of vertical unilateral countermovement jump (CMJ) and bilateral CMJ tests were performed before and after a routine training session of these players at their usual training court. An inertial orientation sensor placed at the third lumbar vertebra was employed for biomechanical data collection.
RESULTS: In relation to the unilateral CMJ, a 10% decrease (P=0.02) in the vertical ground reaction force after training compared to pretraining values was observed. However, no significant differences were observed in the remaining outcomes. Regarding the bilateral CMJ, no significant differences were observed in all assessed outcomes.
CONCLUSIONS: Our findings showed no evidence of fatigue after a controlled regular in season volleyball training session in professional players. In addition, this volleyball training session induced a significant reduction in the vertical ground reaction force during unilateral CMJ in volleyball players.

KEY WORDS: Fatigue; Education; Team sports

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