Journal
MUSCLE & NERVE
Volume 56, Issue 4, Pages 797-803Publisher
WILEY
DOI: 10.1002/mus.25537
Keywords
exertion; heavy; isometric strength; light; pain; recreational exercise
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Introduction: It has been suggested that disparities in effort and discomfort between high- and low-load resistance training might exist, which in turn have produced unequivocal adaptations between studies. Methods: Strength responses to heavier load (HL; 80% maximum voluntary isometric torque; MVIT) and lighter load (LL; 50% MVIT) resistance training were examined in addition to acute perceptions of effort and discomfort. Seven men (20.6 +/- 0.5 years, 178.9 +/- 3.2 cm, 77.1 +/- 2.7 kg) performed unilateral resistance training of the knee extensors to momentary failure using HL and LL. Results: Analyses revealed significant pre- to post-intervention increases in strength for both HL and LL, with no significant between-group differences (P>0.05). Mean repetitions per set, total training time, and discomfort were all significantly higher for LL compared with HL (P<0.05). Conclusion: This study indicates that resistance training with HL and LL produces similar strength adaptations, but discomfort should be considered before selecting a training load.
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