Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements

Bruna G C Da Silva; Martim Bottaro; Fernanda S. Weber; Regis Radaelli; Anelise R. Gaya; Marcelo S. Cardoso; Lee E. Brown; Rodrigo Carregaro; Ronei S. Pinto

doi:10.3233/IES-130485

Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements

Bruna G C Da Silva^*, Martim Bottaro, Fernanda S. Weber, Regis Radaelli, Anelise R. Gaya, Marcelo S. Cardoso, Lee E. Brown, Rodrigo Carregaro, Ronei S. Pinto

^*Corresponding author for this work

Health Sciences

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

OBJECTIVE: To determine the applicability and predictive accuracy of an isoinertial resistance machine for the assessment of hamstring/quadriceps conventional (concentric) ratio (CR). METHOD: Thirty-two resistance trained young men (23.53 ± 3.2 yrs) were tested using dedicated instruments to obtain the peak torque (PT) of the right knee extensors and flexors as well as the corresponding one repetition maximum (1RM) values. All measurements were conducted in the concentric mode. RESULTS: Significant (p< 0.05) correlations were indicated between knee extensor and flexor PT and 1RM values (r=0.73 to 0.75), as well as between PT and 1RM CR values (r=0.65). However the isoinertial CR values (0.42 ± 0.05) were significantly (p< 0.05) greater than their isokinetic counterparts (0.36 ± 0.04). CONCLUSION: Caution should be used when comparing isoinertial CR with population-specific isokinetic normative scores.

Original language	English
Pages (from-to)	107-112
Number of pages	6
Journal	Isokinetics and Exercise Science
Volume	21
Issue number	2
DOIs	https://doi.org/10.3233/IES-130485
Publication status	Published - 2013

Keywords

1-repetition maximum test
leg muscle strength
muscle balance
Muscle strength dynamometers

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@article{5c989dc201274dbcbb76c7dcb760a00f,

title = "Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements",

abstract = "OBJECTIVE: To determine the applicability and predictive accuracy of an isoinertial resistance machine for the assessment of hamstring/quadriceps conventional (concentric) ratio (CR). METHOD: Thirty-two resistance trained young men (23.53 ± 3.2 yrs) were tested using dedicated instruments to obtain the peak torque (PT) of the right knee extensors and flexors as well as the corresponding one repetition maximum (1RM) values. All measurements were conducted in the concentric mode. RESULTS: Significant (p< 0.05) correlations were indicated between knee extensor and flexor PT and 1RM values (r=0.73 to 0.75), as well as between PT and 1RM CR values (r=0.65). However the isoinertial CR values (0.42 ± 0.05) were significantly (p< 0.05) greater than their isokinetic counterparts (0.36 ± 0.04). CONCLUSION: Caution should be used when comparing isoinertial CR with population-specific isokinetic normative scores.",

keywords = "1-repetition maximum test, leg muscle strength, muscle balance, Muscle strength dynamometers",

author = "{Da Silva}, {Bruna G C} and Martim Bottaro and Weber, {Fernanda S.} and Regis Radaelli and Gaya, {Anelise R.} and Cardoso, {Marcelo S.} and Brown, {Lee E.} and Rodrigo Carregaro and Pinto, {Ronei S.}",

year = "2013",

doi = "10.3233/IES-130485",

language = "English",

volume = "21",

pages = "107--112",

journal = "Isokinetics and Exercise Science",

issn = "0959-3020",

publisher = "IOS Press",

number = "2",

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TY - JOUR

T1 - Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements

AU - Da Silva, Bruna G C

AU - Bottaro, Martim

AU - Weber, Fernanda S.

AU - Radaelli, Regis

AU - Gaya, Anelise R.

AU - Cardoso, Marcelo S.

AU - Brown, Lee E.

AU - Carregaro, Rodrigo

AU - Pinto, Ronei S.

PY - 2013

Y1 - 2013

N2 - OBJECTIVE: To determine the applicability and predictive accuracy of an isoinertial resistance machine for the assessment of hamstring/quadriceps conventional (concentric) ratio (CR). METHOD: Thirty-two resistance trained young men (23.53 ± 3.2 yrs) were tested using dedicated instruments to obtain the peak torque (PT) of the right knee extensors and flexors as well as the corresponding one repetition maximum (1RM) values. All measurements were conducted in the concentric mode. RESULTS: Significant (p< 0.05) correlations were indicated between knee extensor and flexor PT and 1RM values (r=0.73 to 0.75), as well as between PT and 1RM CR values (r=0.65). However the isoinertial CR values (0.42 ± 0.05) were significantly (p< 0.05) greater than their isokinetic counterparts (0.36 ± 0.04). CONCLUSION: Caution should be used when comparing isoinertial CR with population-specific isokinetic normative scores.

AB - OBJECTIVE: To determine the applicability and predictive accuracy of an isoinertial resistance machine for the assessment of hamstring/quadriceps conventional (concentric) ratio (CR). METHOD: Thirty-two resistance trained young men (23.53 ± 3.2 yrs) were tested using dedicated instruments to obtain the peak torque (PT) of the right knee extensors and flexors as well as the corresponding one repetition maximum (1RM) values. All measurements were conducted in the concentric mode. RESULTS: Significant (p< 0.05) correlations were indicated between knee extensor and flexor PT and 1RM values (r=0.73 to 0.75), as well as between PT and 1RM CR values (r=0.65). However the isoinertial CR values (0.42 ± 0.05) were significantly (p< 0.05) greater than their isokinetic counterparts (0.36 ± 0.04). CONCLUSION: Caution should be used when comparing isoinertial CR with population-specific isokinetic normative scores.

KW - 1-repetition maximum test

KW - leg muscle strength

KW - muscle balance

KW - Muscle strength dynamometers

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JO - Isokinetics and Exercise Science

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Comparison of hamstring/quadriceps ratio between isoinertial and isokinetic measurements

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Keywords

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