Applying the Critical Power Model to a Full-Body Resistance-Training Movement

Dinyer, Taylor K.; Byrd, M. Travis; Vesotsky, Ashley N.; Succi, Pasquale J.; Bergstrom, Haley C.

doi:10.1123/ijspp.2018-0981

Cited by 7 publications

(22 citation statements)

References 19 publications

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“…These participants were from a large data set that included multiple independent and dependent variables. However, there was no overlap between the sex-dependent comparisons in this study and previously published work [6]. This study was approved by the University Institutional Review Board for Human Subjects.…”

Section: Participantsmentioning

confidence: 53%

“…Theoretically, CR is the highest sustainable resistance that can be lifted repeatedly for an extended number of repetitions and may represent the point just below that of compromised blood flow during dynamic, isometric and intermittent-isometric resistance exercises [6,17]. The CR is derived from the slope of the highly linear relationship between total work (resistance × repetitions) and the number of muscular contractions completed to failure.…”

Section: Discussionmentioning

confidence: 99%

“…Critical resistance (CR) for dynamic constant external resistance (DCER) exercises is defined as the highest resistance that can be sustained for an extended number of repetitions and is derived from the slope of the linear relationship between total work and the number of muscular contractions completed [6,16]. Monod and Scherrer [17] originally proposed this model for dynamic, isometric, and intermittentisometric local (< 1/3 of the total body muscular mass) muscle actions, based on the linear relationship between total work and time to exhaustion.…”

Section: Introductionmentioning

confidence: 99%

“…For intermittent-isometric muscle actions (1:1 work to rest ratio), the asymptote occurred at ~ 40% of the maximum force and ~ 14% for isometric muscle actions [17]. When DCER exercise was applied to a whole-body, the CR reflected an intensity of ~ 40% of the one-repetition maximum (1RM) [6]. This is consistent with the percent of maximum force reported by Monod and Scherrer [17] for intermittent-isometric exercise, which suggested a similar physiological mechanism for a DCER exercise.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, there is limited information [6,16] about the responses to performing fatiguing muscular contractions at CR. In addition, there is no research investigating the differences in fatigue between men and women when exercise is performed at this threshold.…”

Section: Introductionmentioning

confidence: 99%

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The Sensitivity of the Critical Resistance Model to Detect Sex-Related Differences in Fatigue During Submaximal Muscular Contractions

Dinyer

Byrd

Vesotsky

et al. 2019

J. of SCI. IN SPORT AND EXERCISE

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Purpose Critical resistance (CR) is a fatigue threshold that, theoretically, estimates the highest sustainable resistance for repeated skeletal muscle contractions. Men are typically more susceptible to fatigue than women during sustained muscular contractions. Therefore, the purpose of this study was to compare the CR between men and women to determine the sensitivity of the CR model to detect sex-related differences in fatigue at submaximal intensities. Methods Ten men and 10 women completed one-repetition maximum (1RM) testing for the deadlift and repetitions to failure at 50%, 60%, 70%, and 80% of 1RM for the determination of CR. Repetitions to failure were then performed at the estimated CR. Results The men had a greater absolute 1RM (168 ± 27 kg vs. 115 ± 11 kg) and CR (62 ± 14 kg vs. 48 ± 6 kg), but a lower relative CR (percent of 1RM; 37 ± 6% vs. 41 ± 2%) and completed fewer repetitions at CR (45 ± 14 repetitions vs. 58 ± 12 repetitions) compared to the women. Conclusions The CR model was sensitive to detect sex-related differences in fatiguing muscular contractions of the deadlift. In addition, the men were more susceptible to fatigue than the women during performance of submaximal muscular contractions at CR, which may be related to sex-dependent physiological responses during fatiguing muscular contractions.

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Section: Participantsmentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Sensitivity of the Critical Resistance Model to Detect Sex-Related Differences in Fatigue During Submaximal Muscular Contractions

Dinyer

Byrd

Vesotsky

et al. 2019

J. of SCI. IN SPORT AND EXERCISE

Self Cite

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Maximal Number of Repetitions at Percentages of the One Repetition Maximum: A Meta-Regression and Moderator Analysis of Sex, Age, Training Status, and Exercise

Nuzzo,

Pinto,

Nosaka

et al. 2023

Sports Med

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The maximal number of repetitions that can be completed at various percentages of the one repetition maximum (1RM) [REPS ~ %1RM relationship] is foundational knowledge in resistance exercise programming. The current REPS ~ %1RM relationship is based on few studies and has not incorporated uncertainty into estimations or accounted for between-individuals variation. Therefore, we conducted a meta-regression to estimate the mean and between-individuals standard deviation of the number of repetitions that can be completed at various percentages of 1RM. We also explored if the REPS ~ %1RM relationship is moderated by sex, age, training status, and/or exercise. A total of 952 repetitions-to-failure tests, completed by 7289 individuals in 452 groups from 269 studies, were identified. Study groups were predominantly male (66%), healthy (97%), < 59 years of age (92%), and resistance trained (60%). The bench press (42%) and leg press (14%) were the most commonly studied exercises. The REPS ~ %1RM relationship for mean repetitions and standard deviation of repetitions were best described using natural cubic splines and a linear model, respectively, with mean and standard deviation for repetitions decreasing with increasing %1RM. More repetitions were evident in the leg press than bench press across the loading spectrum, thus separate REPS ~ %1RM tables were developed for these two exercises. Analysis of moderators suggested little influences of sex, age, or training status on the REPS ~ %1RM relationship, thus the general main model REPS ~ %1RM table can be applied to all individuals and to all exercises other than the bench press and leg press. More data are needed to develop REPS ~ %1RM tables for other exercises.

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Higher- and lower-load resistance exercise training induce load-specific local muscle endurance changes in young women: a randomised trial

Fliss

Stevenson

Mardan-Dezfouli

et al. 2022

Appl. Physiol. Nutr. Metab.

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The effect of resistance training with higher- and lower-loads on muscle mass and strength has been extensively studied while changes in muscle endurance have received less attention. This trial aimed to assess the effect of training load on absolute (AME) and relative muscle endurance (RME). Sixteen untrained women (22.7±3.3 yr: mean ± SD) had one arm and leg randomly assigned to train with higher-loads (HL; 80-90% 1RM), and the contralateral limbs trained with lower-loads (LL; 30-50% 1RM) thrice weekly to volitional fatigue for 10 weeks. Heavy and light load AME and RME, strength, and muscle mass were assessed pre- and post-training. Strength increased more in the HL compared to LL leg (P = <0.01), but similar increases in strength were observed between upper body conditions (P = 0.46). Lower body heavy and light load AME improved in both conditions, but HL training induced a larger improvement in heavy load AME (HL, 9.3±4.3, vs. LL, 7.5±7.1 repetitions, Time × Limb P < 0.01) and LL training induced a larger improvement in light load AME (LL, 24.7±22.2, vs. HL, 15.2±16.7 repetitions, Time × Limb P = 0.04). In the upper body, HL and LL training induced similar increases in both heavy (Time × Limb P = 0.99), and light load (Time × Limb P = 0.16) AME. Dual-energy x-ray absorptiometry showed no change in leg fat-and-bone-free mass (FBFM) for either condition, and an increase in only LL arm FBFM. AME improved in a manner specific to the training loads used. ClinicalTrials.gov (NCT04547972).

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Applying the Critical Power Model to a Full-Body Resistance-Training Movement

Cited by 7 publications

References 19 publications

The Sensitivity of the Critical Resistance Model to Detect Sex-Related Differences in Fatigue During Submaximal Muscular Contractions

The Sensitivity of the Critical Resistance Model to Detect Sex-Related Differences in Fatigue During Submaximal Muscular Contractions

Maximal Number of Repetitions at Percentages of the One Repetition Maximum: A Meta-Regression and Moderator Analysis of Sex, Age, Training Status, and Exercise

Higher- and lower-load resistance exercise training induce load-specific local muscle endurance changes in young women: a randomised trial

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