Work

Diurnal Variations in Upper and Lower Body Power in Adolescent Volleyball Players: Exploring Time-of-Day Effects on Performance

Year: 2024

Type: article

Abstract: BACKGROUND/OBJECTIVES: This study aims to investigate the daily variations in upper and lower body power performance in adolescent volleyball players. METHODS: The sample consisted of 50 young male volleyball players (14.12 ± 0.8 years), actively involved in regular training and competition. Players were tested for vertical jump tests and medicine ball throws twice, once in the morning (8:00-9:30 h) and once in the evening (18:00-19:30 h). RESULTS: > 0.05). CONCLUSIONS: This study demonstrated that lower body power, manifested in vertical jump performance, was significantly better in the evening compared to the morning. For upper body assessments, the standing medicine ball throw appears more reflective of volleyball-specific movements, while the lying and sitting throw may be less applicable. These findings suggest that volleyball training and testing, especially for leg power, may be more effective later in the day, while upper body performance appears less affected by time.

Source: Sports

DOI: 10.3390/sports12120320

Authors: Nebojša Trajković, Vladan Milić, Tomislav Đurković, Tomica Rešetar, Georgiy Korobeynikov