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Acute changes in passive stiffness of the individual hamstring muscles induced by resistance exercise: effects of contraction mode and range of motion

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European Journal of Applied Physiology Aims and scope Submit manuscript

A Correction to this article was published on 05 July 2022

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Abstract

Purpose

Recent studies raise an interesting possibility that resistance exercise also decreases passive muscle stiffness, as does stretching exercise. However, little is known about how program variables of resistance exercise acutely influence muscle stiffness. We aimed to examine the acute changes in passive stiffness of the individual hamstring muscles after resistance exercises using different combinations of contraction modes and ranges of motion (ROMs).

Methods

Thirteen healthy young male participants performed three sessions of resistance exercises that comprised stiff-leg deadlift with different contraction modes and exercise ROMs on separate days as follows: (1) eccentric contractions with a wide exercise ROM (EW); (2) eccentric contractions with a narrow exercise ROM (EN); and (3) concentric contractions with a wide exercise ROM (CW). Maximal joint ROM, passive torque, shear modulus of the individual hamstring muscles, and maximal isometric torque of knee flexion were measured before and 3 min, 30 min, and 60 min after completing each session.

Results

The shear modulus of the semimembranosus was significantly lower at 3 min post-exercise (121.8 ± 16.0 kPa) than at pre-exercise (129.0 ± 18.9 kPa, p = 0.021, r = 0.45) in EW, but not in EN or CW. There were no significant changes in the shear moduli of the biceps femoris long head or the semitendinosus at any timepoint in any exercise protocols.

Conclusions

The present results suggest that the combination of eccentric contraction and wide ROM during resistance exercise has the potential to acutely decrease passive stiffness (shear modulus) of a specific muscle.

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Availability of data and materials

The data sets generated and analyzed during the current study are available from the corresponding author on reasonable request.

Code availability

Information on software application is available upon reasonable request.

Change history

Abbreviations

BFlh:

Biceps femoris long head

CW:

Concentric contraction with wide range of motion

EN:

Eccentric contraction with narrow range of motion

EW:

Eccentric contraction with wide range of motion

RMS :

Root-mean-square

ROM:

Range of motion

SDL:

Stiff-leg deadlift

SM:

Semimembranosus

ST:

Semitendinosus

References

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Acknowledgements

This work was supported by a grant of the Japan Society for the Promotion of Science (no. 21J20128).

Funding

This work was supported by a grant from the Japan Society for the Promotion of Science (no. 21J20128).

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Authors and Affiliations

Authors

Contributions

RK, TH, and TW conceived and designed the study. RK conducted the experiments, analyzed the data, and wrote the original draft. KY, TH, and TW reviewed and edited the original draft. All authors read and approved the manuscript.

Corresponding author

Correspondence to Taku Wakahara.

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Conflict of interest

The authors declare no competing interests to declare that are relevant to the content of this article.

Ethics approval

The present study was approved by the Doshisha University Research Ethics Review Committee regarding Human Subject Research (number: 21006). All experimental procedures involving human participants were in accordance with the Declaration of Helsinki and its later amendments or comparable standards.

Informed consent

Informed consent was obtained from all individual participants included in this study.

Consent to participate

All participants consented to participate in the present study.

Consent to publication

All authors consent to the publication of the manuscript in EJAP.

Additional information

Communicated by Oliver Seynnes.

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Cite this article

Kawama, R., Yanase, K., Hojo, T. et al. Acute changes in passive stiffness of the individual hamstring muscles induced by resistance exercise: effects of contraction mode and range of motion. Eur J Appl Physiol 122, 2071–2083 (2022). https://doi.org/10.1007/s00421-022-04976-6

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  • DOI: https://doi.org/10.1007/s00421-022-04976-6

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