Fascicle length does increase in response to longitudinal resistance training and in a contraction-mode specific manner.

Martino V Franchi,Marco V Narici,Constantinos N Maganaris,Philip J Atherton

doi:10.1186/s40064-015-1548-8

Martino V Franchi, Marco V Narici + Show 2 more

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https://doi.org/10.1186/s40064-015-1548-8

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Abstract

Fascicle length does increase in response to longitudinal resistance training and in a contraction-mode specific manner.

Highlights

Dear Editor: Morphological adaptations of skeletal muscle to resistance exercise training (RET) have been the subject of many studies: essentially, muscle hypertrophy is achieved by a structural remodelling of the contractile machinery, which can be assessed macroscopically by investigating changes in muscle architecture (i.e. fascicle length, Lf; pennation angle, PA; muscle thickness, MT) (Gans 1982; Narici 1999; Lieber and Fridén 2000, 2001; Reeves et al 2004, 2005)
Dear Editor: Morphological adaptations of skeletal muscle to resistance exercise training (RET) have been the subject of many studies: essentially, muscle hypertrophy is achieved by a structural remodelling of the contractile machinery, which can be assessed macroscopically by investigating changes in muscle architecture (Gans 1982; Narici 1999; Lieber and Fridén 2000, 2001; Reeves et al 2004, 2005)
In a recent study by Fukutani and Kurihara (2015) published in SpringerPlus (2015, 4:341), the authors investigated differences in fascicle length (Lf) between resistance trained and untrained individuals using a cross-sectional design: the main conclusion being made was that Lf was not associated with muscle hypertrophy on the basis that no significant differences in Lf were found between the groups

Summary

Introduction

Dear Editor: Morphological adaptations of skeletal muscle to resistance exercise training (RET) have been the subject of many studies: essentially, muscle hypertrophy is achieved by a structural remodelling of the contractile machinery, which can be assessed macroscopically by investigating changes in muscle architecture (i.e. fascicle length, Lf; pennation angle, PA; muscle thickness, MT) (Gans 1982; Narici 1999; Lieber and Fridén 2000, 2001; Reeves et al 2004, 2005). In a recent study by Fukutani and Kurihara (2015) published in SpringerPlus (2015, 4:341), the authors investigated differences in Lf between resistance trained and untrained individuals using a cross-sectional design: the main conclusion being made was that Lf was not associated with muscle hypertrophy on the basis that no significant differences in Lf were found between the groups.

Results

Conclusion