Inducing hypertrophic effects of type I skeletal muscle fibers: A hypothetical role of time under load in resistance training aimed at muscular hypertrophy

Grgić, Jozo; Homolak, Jan; Mikulić, Pavle; Botella, Javier; Schöenfeld, Brad J.

doi:10.1016/j.mehy.2018.01.012

Cited by 29 publications

(21 citation statements)

References 32 publications

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“…Therefore, the CB during the bench press exercise could allow the bar to be accelerated through a greater ROM, which might result in significantly higher bar velocity and power output compared to an SB. Furthermore, the changes in ROM during the resistance exercise can also impact the time under tension or recently used -term time under load (TUL) (Grgic et al, 2018) in a particular set, as well as in a whole training session. A common method of measuring resistance training volume is multiplying the repetitions with the external load (Padulo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Can the Cambered Bar Enhance Acute Performance in the Bench Press Exercise?

et al. 2020

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The main goal of this study was to assess the impact of the cambered bar (CB) during the bench press exercise on power output and bar velocity when compared to a standard bar (SB). Ten healthy strength-trained men (age = 27.9 ± 3.7 years; body mass = 90.1 ± 12.5 kg; resistance training experience = 6.5 ± 2.7 years; bench press one-repetition maximum (1RM) = 118.5 ± 21 kg) performed a single set of 3 repetitions of the bench press exercise with an SB and a CB at 50%1RM to assess differences in peak power output (PP), mean power output (MP), peak bar velocity (PV), and mean bar velocity (MV), range of motion (ROM), and positive work time under load (TUL) between conditions. The t-test indicated significantly higher mean ROM for the cambered bar in comparison to the standard bar (52.7 vs. 44.9 cm; P < 0.01; ES = 1.40). Further, there was a significantly higher PP (907 vs. 817 W; P < 0.01; ES = 0.35), MP (556 vs. 496 W; P < 0.01; ES = 0.46), PV (1.24 vs. 1.14 m/s; P < 0.01; ES = 0.35) and MV (0.89 vs. 0.82 m/s; P < 0.01; ES = 0.34) for the CB condition when compared to the SB. A significantly longer TUL for the CB was observed, when compared to the SB (1.89 vs. 1.51 s; P < 0.01; ES = 1.38). The results of this study showed that the CB significantly increased power output and bar velocity in the bench press exercise at 50%1RM compared to the SB. Therefore, the additional ROM, made possible through the use of the CB, allows for the acceleration of the bar through a significantly longer displacement, which has a positive impact on power output. However, a simultaneous increase in TUL may cause higher fatigue when the bench press is performed with the CB compared to the SB.

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Section: Introductionmentioning

confidence: 99%

Can the Cambered Bar Enhance Acute Performance in the Bench Press Exercise?

et al. 2020

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“…While the meta-analysis of Schoenfeld et al ( 2017 ) reported similar changes in muscle size irrespective of loading schemes, the question remains as to whether the hypertrophy of type I and type II muscle fibers was also similar between high- and low-load conditions. It might be that high-load RT emphasizes type II muscle hypertrophy (Campos et al, 2002 ), with low-load RT stimulating greater growth in type I muscle fibers (Ogborn and Schoenfeld, 2014 ; Grgic et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Are the Hypertrophic Adaptations to High and Low-Load Resistance Training Muscle Fiber Type Specific?

Grgić

Schöenfeld

2018

Front. Physiol.

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“…Such improvements have also been observed in spite of a reduction of the sportspecific training volume [17,18]. Moreover, high-intensity strength training favors greater muscle power, mainly via neural adaptations, with no or very little hypertrophic response [14], while resistance training with low loads (i.e., <60% of 1RM) might primarily augment the hypertrophy of type I muscle fibers, which have a higher oxidative capacity and a higher fatigue threshold [19]. Give that muscle hypertrophy could have a negative impact on weight-bearing endurance events, the muscle hypertrophy protocol was not adopted in our study.…”

Section: Discussionmentioning

confidence: 99%

Lower-Limb Explosive Power did not Improve during 8 Weeks of Integrative Military Physical Training

Ma¹,

Hu²,

Huang³

et al. 2020

Preprint

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Objective: Military populations require a range of physical capabilities to meet the demands of the military profession. It is not known whether a specific within-session balance of the core components of physical fitness provides more effective training adaptations. The purpose of this research was to determine the effects of combinations of high-intensity endurance training, resistance training, anaerobic training and plyometric training. Methods: Twenty-eight healthy young cadets participated in an 8-week training program. Training was performed 6 days per week. Testing occurred before and after the 8-week training regimen. The pre- and post-training measures included the basic physiological and performance levels.Results: Physiological indices, such heart rate, heart rate variability, anaerobic power and maximal oxygen uptake, responded positively to training (P < 0.05). The components of physical fitness, such as muscle maximal strength and endurance, 600 all-out effort, 5000-m run time and 18-km military load carriage, were also significantly improved (P > 0.05). However, the jump capacity did not significantly increase. Conclusion: The results of this study indicate that during short-term integrative training, the lower-limb muscle maximal power did not improve. Given that many military tasks demand explosive (power) abilities, a switch to integrative training may have far greater consequences for transferring the benefits of the training program to military human performance.

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Inducing hypertrophic effects of type I skeletal muscle fibers: A hypothetical role of time under load in resistance training aimed at muscular hypertrophy

Cited by 29 publications

References 32 publications

Can the Cambered Bar Enhance Acute Performance in the Bench Press Exercise?

Can the Cambered Bar Enhance Acute Performance in the Bench Press Exercise?

Are the Hypertrophic Adaptations to High and Low-Load Resistance Training Muscle Fiber Type Specific?

Lower-Limb Explosive Power did not Improve during 8 Weeks of Integrative Military Physical Training

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