Maximum strength, relative strength, and strength deficit: Relationships with performance and differences between elite sprinters and professional rugby union players
Document Type
Journal Article
Publication Title
International Journal of Sports Physiology and Performance
Volume
16
Issue
8
First Page
1148
Last Page
1153
Publisher
Human Kinetics
School
School of Medical and Health Sciences
RAS ID
39584
Abstract
Purpose: To test the relationships between maximum and relative strength (MS and RS), absolute and relative peak force (PF and RPF), and strength deficit (SDef), with sprint and jump performance, and to compare these mechanical variables between elite sprinters and professional rugby union players. Methods: Thirty-five male rugby union players and 30 male sprinters performed vertical jumps, 30-m sprint, and half-squat 1-repetition maximum (1RM), where these force-related parameters were collected. Pearson correlation coefficients were used to test the relationships between the variables. An independent t test and magnitude-based inferences compared the mechanical variables between sprinters and rugby players. Results: Almost certain significant differences were observed for jump and sprint performance between groups (P < .0001). The rugby union players demonstrated a likely significant higher MS (P =.03) but a very likely lower RS (P =.007) than the sprinters. No significant differences were observed for PF between them. The sprinters exhibited an almost certain significant higher RPF than the rugby players (P < .0001). Furthermore, the rugby players demonstrated almost certain to likely significant higher SDef from 40% to 70% 1RM (P < .05) compared with the sprinters. Overall, all strength-derived parameters were significantly related to functional performance. Conclusions: Elite sprinters present higher levels of RS and RPF, lower levels of SDef, and better sprint and jump performance than professional rugby players. Relative strength-derived values (RS and RPF) and SDef are significantly associated with speed-power measures and may be used as effective and practical indicators of athletic performance.
DOI
10.1123/IJSPP.2020-0342
Access Rights
subscription content
Comments
Loturco, I., Pereira, L. A., Freitas, T. T., Bishop, C., Pareja-Blanco, F., & McGuigan, M. R. (2021). Maximum strength, relative strength, and strength deficit: Relationships with performance and differences between elite sprinters and professional rugby union players. International Journal of Sports Physiology and Performance, 16(8), 1148-1153. https://doi.org/10.1123/IJSPP.2020-0342