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ACUTE EFFECT OF DIFFERENT LOADS ON MUSCLE PERFORMANCE AND PERCEIVED EXERTION IN YOUNG WOMEN

Jose Claudio Jambassi Filho,Lucas Melo Neves, Isabela Regina de Lima, Marilia Picossi Villa, Guilherme Estruzani, Larissa Cedro, Ricardo Alarcon, Vitor Buvulenta,Rafael Bonfim do Nascimento, Luis Ferreira Monteiro Neto,Igor Augusto Braz

Revista brasileira de medicina do esporte(2023)

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摘要
ABSTRACT Introduction: Load reduction using the repetition maximum (RM) method may be necessary to promote higher numbers of repetitions, and consequently, higher total volume, time under tension, and perceived exertion ratings. Objective: To compare the effects of different leg press exercise loads on number of repetitions, total volume, time under tension, and perceived exertion. Methods: Eighteen women university students (23.9 ± 3.8 years) performed two experimental sessions with 90% and 100% of 10-12 RM in a balanced crossover design. Results: The number of repetitions of the second and third sets, the total volume, and time under tension at 90% of 10-12 RM was statistically higher than at 100% of 10-12 RM ( p < 0.05). The perceived exertion of the first and second sets and the training load (perceived exertion x duration of sessions) were higher at 100% of the 10-12 RM session ( p < 0.05). Conclusion: A small reduction in load results in a greater number of repetitions, total volume, and time under tension. The session with the higher load appeared to induce higher perceived exertion and training load. Thus, scientists and coaches might consider lower loads to maximize the number of repetitions, total volume, and time under tension, which may cause greater long-term muscular adaptations. Level of evidence II; Comparative prospective study.
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关键词
Lower limb,Muscle fatigue,Muscle strength,Resistance training
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