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- Title
Selective effects of different fatigue protocols on the function of upper body muscles assessed through the force-velocity relationship.
- Authors
García-Ramos, Amador; Torrejón, Alejandro; Feriche, Belén; Morales-Artacho, Antonio J.; Pérez-Castilla, Alejandro; Padial, Paulino; Jaric, Slobodan
- Abstract
<bold>Purpose: </bold>This study explored the feasibility of the force-velocity relationship (F-V) to detect the acute effects of different fatigue protocols on the selective changes of the maximal capacities of upper body muscles to produce force, velocity, and power.<bold>Methods: </bold>After determining the bench press one-repetition maximum (1RM), participants' F-V relationships were assessed during the bench press throw exercise on five separate sessions after performing one of the following fatiguing protocols: 60%1RM failure, 60%1RM non-failure, 80%1RM failure, 80%1RM non-failure, and no-fatigue. In the non-failure protocols, participants performed half the maximum number of repetitions than in their respective failure protocols.<bold>Results: </bold>The main findings revealed that (1) all F-V relationships were highly linear (median r = 0.997 and r = 0.982 for averaged across participants and individual data, respectively), (2) the fatiguing protocols were ranked based on the magnitude of power loss as follows: 60%1RM failure > 80%1RM failure > 60%1RM non-failure > 80%1RM non-failure, while (3) the assessed maximum force and velocity outputs showed a particularly prominent reduction in the protocols based on the lowest and highest levels of fatigue (i.e., 80%1RM non-failure and 60%1RM failure), respectively.<bold>Conclusions: </bold>The results support the use of F-V to assess the effects of fatigue on the distinctive capacities of the muscles to produce force, velocity, and power output while performing multi-joint tasks, while the assessed maximum force and velocity capacities showed a particularly prominent reduction in the protocols based on the lowest and highest levels of fatigue (i.e., 80%1RM non-failure and 60%1RM failure), respectively.
- Subjects
FATIGUE (Physiology); VELOCITY; POWER (Mechanics); BENCH press; MUSCLES; TORSO physiology; SKELETAL muscle physiology; KINEMATICS; RESEARCH funding; STATISTICAL sampling; MUSCLE fatigue; RESISTANCE training
- Publication
European Journal of Applied Physiology, 2018, Vol 118, Issue 2, p439
- ISSN
1439-6319
- Publication type
journal article
- DOI
10.1007/s00421-017-3786-7