Irineu Loturco1, Timothy Suchomel2, Chris Bishop3, Ronaldo Kobal1, Lucas A Pereira1, Michael McGuigan4,5. 1. 1 NAR - Nucleus of High Performance in Sport, São Paulo, Brazil. 2. 2 Department of Human Movement Sciences, Carroll University, Waukesha, WI, USA. 3. 3 London Sport Institute, School of Science and Technology, Middlesex University, London, United Kingdom. 4. 4 Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand. 5. 5 School of Medical and Health Sciences, Edith Cowan University, Perth, Australia.
Abstract
PURPOSE: This study compared the associations between optimum power loads and 1-repetition maximum (1RM) values (assessed in half-squat [HS] and jump squat [JS] exercises) and multiple performance measures in elite athletes. METHODS: Sixty-one elite athletes (fifteen Olympians) from four different sports (track and field [sprinters and jumpers], rugby sevens, bobsled, and soccer) performed squat and countermovement jumps, HS exercise (for assessing 1RM), HS and JS exercises (for assessing bar-power output), and sprint tests (60-m for sprinters and jumpers and 40-m for the other athletes). Pearson's product moment correlation test was used to determine relationships between 1RM and bar-power outputs with vertical jumps and sprint times in both exercises. RESULTS: Overall, both measurements were moderately to near perfectly related to speed performance (r values varying from -0.35 to -0.69 for correlations between 1RM and sprint times, and from -0.36 to -0.91 for correlations between bar-power outputs and sprint times; P< 0.05). However, on average, the magnitude of these correlations was stronger for power-related variables, and only the bar-power outputs were significantly related to vertical jump height. CONCLUSIONS: The bar-power outputs were more strongly associated with sprint-speed and power performance than the 1RM measures. Therefore, coaches and researchers can use the bar-power approach for athlete testing and monitoring. Due to the strong correlations presented, it is possible to infer that meaningful variations in bar-power production may also represent substantial changes in actual sport performance.
PURPOSE: This study compared the associations between optimum power loads and 1-repetition maximum (1RM) values (assessed in half-squat [HS] and jump squat [JS] exercises) and multiple performance measures in elite athletes. METHODS: Sixty-one elite athletes (fifteen Olympians) from four different sports (track and field [sprinters and jumpers], rugby sevens, bobsled, and soccer) performed squat and countermovement jumps, HS exercise (for assessing 1RM), HS and JS exercises (for assessing bar-power output), and sprint tests (60-m for sprinters and jumpers and 40-m for the other athletes). Pearson's product moment correlation test was used to determine relationships between 1RM and bar-power outputs with vertical jumps and sprint times in both exercises. RESULTS: Overall, both measurements were moderately to near perfectly related to speed performance (r values varying from -0.35 to -0.69 for correlations between 1RM and sprint times, and from -0.36 to -0.91 for correlations between bar-power outputs and sprint times; P< 0.05). However, on average, the magnitude of these correlations was stronger for power-related variables, and only the bar-power outputs were significantly related to vertical jump height. CONCLUSIONS: The bar-power outputs were more strongly associated with sprint-speed and power performance than the 1RM measures. Therefore, coaches and researchers can use the bar-power approach for athlete testing and monitoring. Due to the strong correlations presented, it is possible to infer that meaningful variations in bar-power production may also represent substantial changes in actual sport performance.
Entities:
Keywords:
bar-velocity; elite athletes; maximum strength; muscle power; optimal load
Authors: Irineu Loturco; Michael R McGuigan; Tomás T Freitas; Pedro L Valenzuela; Lucas A Pereira; Fernando Pareja-Blanco Journal: Biol Sport Date: 2020-08-31 Impact factor: 2.806
Authors: Irineu Loturco; Chris Bishop; Rodrigo Ramirez-Campillo; Felipe Romano; Mateus Alves; Lucas A Pereira; Michael McGuigan Journal: Sports (Basel) Date: 2018-09-13