Influence of full range of motion vs. equalized partial range of motion training on muscle architecture and mechanical properties

Valamatos, Maria J.; Tavares, Francisco; Santos, Rodrigo de Paula; Veloso, António; Mil‐Homens, Pedro

doi:10.1007/s00421-018-3932-x

Cited by 42 publications

(64 citation statements)

References 46 publications

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“…Altogether, they conclude that the contralateral training effect is real, but small (Carroll et al ). However, three previous studies showed length‐specific effects of isometric training despite using a similar design as in the present study (training simultaneously one leg short and the other leg long, for 6 weeks) (Lindh, ; Noorkoiv et al , ), furthermore a study using concentric knee extensions in partial and full ROM, also showed length‐specific effects (Valamatos et al ). Even though results of these studies argue against that the cross‐over effect would be large enough to counteract the length‐specific effects, we cannot exclude a possible minor cross‐over effect in our study.…”

Section: Discussionsupporting

confidence: 55%

“…Most of the abovementioned studies have been conducted using isometric contractions, whereas most in vivo muscle contractions are dynamic. Despite this, only few studies have examined training response to concentric strength training at restricted muscle lengths (Graves et al ; Folland et al ; Valamatos et al ), and these studies have not examined the effects on fatigability at various muscle lengths.…”

Section: Introductionmentioning

confidence: 99%

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Concentric strength training at optimal or short muscle length improves strength equally but does not reduce fatigability of hamstring muscles

et al. 2019

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The purpose of this study was to compare the effect of a 6‐week period of knee flexion strength training at either optimal or short muscle length, on length‐specific muscle strength and fatigue. Twelve healthy volunteers performed dynamic (isokinetic concentric) training with one leg at short and the contralateral leg at optimal muscle length for 6 weeks. Knee flexor muscle strength was assessed before and after training, comprising maximal voluntary isometric and dynamic contractions at short, intermediate and near optimal muscle length and electrically evoked, contractions at near optimal length only. Fatigability was tested by performing 60 maximal concentric contractions at either short or optimal muscle length. Isometric torque at all muscle lengths improved equally by training at short and optimal muscle length, for example, tested at short 18 (17) versus 21 (17) % (CI) and at optimal 14 (8) versus 17 (16) % muscle length, respectively. Likewise, equal improvements were observed for dynamic contractions in both groups. Prior to training, fatigue induced at optimal muscle length tended to be more pronounced than at short muscle length (fatigue‐indexes −41 (6) vs. −34 (7) %, respectively, P = 0.05). However, training at either length did not reduce fatigability. Training with maximal concentric contractions at either short or optimal muscle length for 6 weeks improved isometric and dynamic muscle strength in the entire range of motion without inducing any discernible length‐specific adaptations. However, strength training at restricted muscle length did not reduce relative fatigue when induced at either short or optimal muscle length.

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Concentric strength training at optimal or short muscle length improves strength equally but does not reduce fatigability of hamstring muscles

et al. 2019

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“…The full texts of these articles were then screened and 6 were identified as meeting inclusion criteria. [16][17][18][19][20][21] All included studies tallied 6 points on the PEDro checklist and thus were classified as being of "excellent" methodological quality. Figure 1 provides a flow chart of the search process.…”

Section: Resultsmentioning

confidence: 99%

“…All studies employed multiple set protocols, with repetitions ranging from 3 to 20 across trials; half of the included studies periodized training over the study period. 17,18,20…”

Section: Resultsmentioning

confidence: 99%

Effects of range of motion on muscle development during resistance training interventions: A systematic review

Schöenfeld

Grgić

2020

SAGE Open Medicine

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The purpose of this study was to systematically review the literature as to the effects of performing exercise with a full versus partial range of motion (ROM) during dynamic, longitudinal resistance training (RT) programs on changes in muscle hypertrophy. Based on the available literature, we aimed to draw evidence-based recommendations for RT prescription. Six studies were identified as meeting inclusion criteria: four of these studies involved RT for the lower limbs while the other two focused on the upper extremities. The total combined sample of the studies was n = 135, which comprised 127 men and 8 women. The methodological quality of all included studies was deemed to be “excellent” based on the modified PEDro scale. When assessing the current body of literature, it can be inferred that performing RT through a full ROM confers beneficial effects on hypertrophy of the lower body musculature versus training with a partial ROM. Alternatively, research on the effects of ROM for the upper limbs is limited and conflicting, precluding the ability to draw strong practical inferences. No study to date has investigated how ROM influences muscle growth of the trunk musculature. Finally, some evidence indicates that the response to variations in ROM may be muscle-specific; however, this hypothesis also warrants further study.

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“…There are several studies that compare the influence of concentric versus eccentric training exercises on the adaptations induced in the knee extensor muscles [33][34][35]. In general, the results point to a clear improvement in the maximum levels of force production, in an isometric regime, without being able to identify an evident advantage of one mode of training over the other [34,35].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Strength Training on Vastus Lateralis’ Stiffness: An Ultrasound Quasi-Static Elastography Study

Santos

Valamatos

Mil‐Homens

et al. 2020

IJERPH

Self Cite

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Ultrasound imaging allows the evaluation of musculoskeletal morphology and function. Ultrasound elastography can also offer semi-quantitative and/or quantitative assessment of tissue stiffness providing relevant information about adaptations of skeletal muscle mechanical properties. In this study we aimed to explore the feasibility of elastography ultrasound imaging in assessing the effect of strength training on vastus lateralis stiffness. Twenty-eight young male adults were separated in a control (n = 9) and strength-training (n = 20) groups. The strength-training group completed 15 weeks of either concentric (n = 10) or eccentric (n = 10) isokinetic training of the knee extensors. Ultrasound scans of the vastus lateralis for quasi-static elastography were collected. All image acquisitions and measurements were done by the same experienced sonographer. After 15 weeks, knee maximal extension isometric torque increased in the strength-training groups. After strength training, there was a decrease in the amount of red pixels in vastus lateralis region of interest [F(1,18) = 25.490; p < 0.001; η2 = 0.586], whereas the amount of green and blue pixels increased F(1,18) = 17.179; p < 0.01; η2 = 0.488; F(1,18) = 6.522; p < 0.05; η2 = 0.266], suggesting higher vastus lateralis stiffness. We conclude that concentric and eccentric strength training increases skeletal muscle stiffness, which can be evaluated by quasi-static elastography. Ultrasound elastography is suitable for non-invasive evaluation of skeletal muscle functional adaptations, which can be of importance for sports medicine and in designing optimal training and rehabilitation programs.

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Influence of full range of motion vs. equalized partial range of motion training on muscle architecture and mechanical properties

Cited by 42 publications

References 46 publications

Concentric strength training at optimal or short muscle length improves strength equally but does not reduce fatigability of hamstring muscles

Concentric strength training at optimal or short muscle length improves strength equally but does not reduce fatigability of hamstring muscles

Effects of range of motion on muscle development during resistance training interventions: A systematic review

The Effect of Strength Training on Vastus Lateralis’ Stiffness: An Ultrasound Quasi-Static Elastography Study

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