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Article Title

RELATIONSHIP BETWEEN RATINGS OF PERCEIVED EXERTION, REPETITIONS IN RESERVE, AND BAR VELOCITY IN MALES AND FEMALES

Abstract

Daniel Lawson, Cody Stahl and Jay Dawes

Oklahoma State University, Stillwater, OK

Rating of perceived exertion (RPE) scales, repetitions in reserve (RIR), and average concentric barbell velocity (ACV) are common variables used for prescribing and monitoring resistance training load. As load increases, ACV decreases, RIR becomes smaller, and RPE increases. Strong inverse relationships between RPE, RIR, and ACBV have been reported during exercise, with heavier loads performed closer to failure showing the strongest relationship regardless of training age. However, comparing relationships between males and females for ACV, RPE, and RIR has not been well investigated. PURPOSE: To investigate the relationships between RPE, RIR, and ACV by sex during the back squat (BS) and bench press (BP) exercise at multiple percentages of the one-repetition maximum (1RM). METHODS: Subjects performed three repetitions for the BS and BP at loads ranging from 30-90% 1RM (10% increments) with RPE, RIR, and ACV recorded following the cessation of each set. RESULTS: Strong to very strong relationships were observed for RPE and RIR (males, BS: r = -0.814, BP r = -0.877; females, BS: r = -0.884, BP: r = -0.917 ; p < 0.01), RPE and ACV (males, BS: r = -0.829, BP r = -0.872; females, BS: r = -0.742, BP: r = -0.77; p < 0.01), and RIR and ACV (males, BS: r = 0.865, BP r = 0.847; females, BS: r = 0.853, BP: r = 0.816; p < 0.01). No significant differences between males and females were observed for RPE, RIR, and ACV at each load (30-90% of 1RM; p > 0.05 for all). CONCLUSIONS: In summary, RPE, RIR, and ACV are strongly related variables with no significant differences between trained males and females during the BS and BP exercises.

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