Relationship Between the Number of Repetitions and Selected Percentages of One Repetition Maximum in Free Weight Exercises in Trained and Untrained Men

Shimano, Tomoko; Kraemer, William J.; Spiering, Barry A.; Volek, Jeff S.; Hatfield, Disa L.; Silvestre, Ricardo; Vingren, Jakob L.; Fragala, Maren S.; Maresh, Carl M.; Fleck, Steven J.; Newton, Robert U.; SPREUWENBERG, LUUK P.B.; Häkkinen, Keijo

doi:10.1519/r-18195.1

Cited by 131 publications

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“…Disparities between high- and low-load resistance training are well documented in the literature. It has long been known that the number of repetitions increases as training intensity decreases (7, 8), and this increase is disproportionate to the change in load such that greater VL is accomplished at lighter loads (9). The present study also indicates that the greater sessional VL ultimately results in a greater rate of change in VL in response to consistent, low-load training.…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Increases in Volume Load Over 8 Weeks of Low-Versus High-Load Resistance Training

et al. 2016

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BackgroundIt has been hypothesized that the ability to increase volume load (VL) via a progressive increase in the magnitude of load for a given exercise within a given repetition range could enhance the adaptive response to resistance training.ObjectivesThe purpose of this study was to compare changes in volume load (VL) over eight weeks of resistance training (RT) in high-versus low-load protocols.Materials and MethodsEighteen well-trained men were matched according to baseline strength were randomly assigned to either a low-load RT (LOW, n = 9) where 25 - 35 repetitions were performed per exercise, or a high-load RT (HIGH, n = 9) where 8 - 12 repetitions were performed per exercise. Both groups performed three sets of seven exercises for all major muscles three times per week on non-consecutive days.ResultsAfter adjusting for the pre-test scores, there was a significant difference between the two intervention groups on post-intervention total VL with a very large effect size (F (1, 15) = 16.598, P = .001, ηp2 = .525). There was a significant relationship between pre-intervention and post-intervention total VL (F (1, 15) = 32.048, P < .0001, ηp2 = .681) in which the pre-test scores explained 68% of the variance in the post-test scores.ConclusionsThis study indicates that low-load RT results in greater accumulations in VL compared to high-load RT over the course of 8 weeks of training.

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Section: Discussionmentioning

confidence: 99%

A Comparison of Increases in Volume Load Over 8 Weeks of Low-Versus High-Load Resistance Training

et al. 2016

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“…It is the authors’ opinion that the wide variation in the number of repetitions that a given individual can complete with a given relative load is not adequately recognised by coaches. This need is magnified by the fact that differences have been found in the relationship between intensity and repetitions completed between upper body and lower body exercises [11], between single-joint exercises and multi-joint exercises [10, 23], and between males and females with the same exercise [15]. An alternative is for practitioners to use alternate methods of prescribing intensity.…”

Section: Discussionmentioning

confidence: 99%

The Relationship Between the Number of Repetitions Performed at Given Intensities Is Different in Endurance and Strength Trained Athletes

2014

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Prescribing training intensity and volume is a key problem when designing resistance training programmes. One approach is to base training prescription on the number of repetitions performed at a given percentage of repetition maximum due to the correlation found between these two measures. However, previous research has raised questions as to the accuracy of this method, as the repetitions completed at different percentages of 1RM can differ based upon the characteristics of the athlete. The objective of this study was therefore to evaluate the effect of an athlete's training background on the relationship between the load lifted (as a percentage of one repetition maximum) and the number of repetitions achieved. Eight weightlifters and eight endurance runners each completed a one repetition maximum test on the leg press and completed repetitions to fatigue at 90, 80 and 70% of their one repetition maximum. The endurance runners completed significantly more repetitions than the weightlifters at 70% (39.9 ± 17.6 versus 17.9 ± 2.8; p < 0.05) and 80% (19.8 ± 6.4 versus 11.8 ± 2.7; p < 0.05) of their one repetition maximum but not at 90% (10.8 ± 3.9 versus 7.0 ± 2.1; p > 0.05) of one repetition maximum. These differences could be explained by the contrasting training adaptations demanded by each sport. This study suggests that traditional guidelines may underestimate the potential number of repetitions that can be completed at a given percentage of 1RM, particularly for endurance trained athletes.

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“…To be able to get the maximum benefit from the exercise, it is very important to perform the proper technique with a well-designed set and repetition numbers. It is a well-known fact that the number of repetitions decreases when the load increases [10–12]. Although it is advised that the technique should remain the same as the exercise intensity is increased [5], it is a common observation for many trainers that when the loads reach to the limits of the athletes, athletes may change the movement pattern of the performed exercise.…”

Section: Introductionmentioning

confidence: 99%

Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading

Yavuz

Erdağ

2017

Applied Bionics and Biomechanics

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The aim of this study was to investigate the possible kinematic and muscular activity changes with maximal loading during squat maneuver. Fourteen healthy male individuals, who were experienced at performing squats, participated in this study. Each subject performed squats with 80%, 90%, and 100% of the previously established 1 repetition maximum (1RM). Electromyographic (EMG) activities were measured for the vastus lateralis, vastus medialis, rectus femoris, semitendinosus, biceps femoris, gluteus maximus, and erector spinae by using an 8-channel dual-mode portable EMG and physiological signal data acquisition system (Myomonitor IV, Delsys Inc., Boston, MA, USA). Kinematical data were analyzed by using saSuite 2D kinematical analysis program. Data were analyzed with repeated measures analysis of variance (p < 0.05). Overall muscle activities increased with increasing loads, but significant increases were seen only for vastus medialis and gluteus maximus during 90% and 100% of 1RM compared to 80% while there was no significant difference between 90% and 100% for any muscle. The movement pattern in the hip joint changed with an increase in forward lean during maximal loading. Results may suggest that maximal loading during squat may not be necessary for focusing on knee extensor improvement and may increase the lumbar injury risk.

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Relationship Between the Number of Repetitions and Selected Percentages of One Repetition Maximum in Free Weight Exercises in Trained and Untrained Men

Cited by 131 publications

References 0 publications

A Comparison of Increases in Volume Load Over 8 Weeks of Low-Versus High-Load Resistance Training

A Comparison of Increases in Volume Load Over 8 Weeks of Low-Versus High-Load Resistance Training

The Relationship Between the Number of Repetitions Performed at Given Intensities Is Different in Endurance and Strength Trained Athletes

Kinematic and Electromyographic Activity Changes during Back Squat with Submaximal and Maximal Loading

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