論文種別	原著(症例報告除く)
言語種別	英語
査読の有無	その他(不明)
表題	The long head of the biceps brachii muscle is lengthened by compression in the proximal and distal regions.
掲載誌名	正式名：Journal of bodywork and movement therapies 略　 称：J Bodyw Mov Ther ISSNコード：15329283/13608592
掲載区分	国外
巻・号・頁	46,pp.564-569
著者・共著者	Hiyu Mukai, Masahide Yagi, Junya Saeki, Jun Umehara, Ko Yanase, Taiga Noda, Hiroshige Tateuchi, Noriaki Ichihashi
発行年月	2026/06
概要	INTRODUCTION:Manual compression to a muscle, such as massage, is applied clinically to lengthen the muscle. By manual compression, a pennate muscle, the gastrocnemius muscle, is lengthened in the region proximal to the compression point and shortened in the distal region. Although the mechanical response to manual compression is probably different between a pennate muscle and a fusiform muscle, no study has investigated it in a fusiform muscle. The aim of this study was to clarify the lengthening of a fusiform muscle by applying compression using shear wave elastography.METHOD:Twenty healthy young men participated in this study. The shear modulus of the long head of the biceps brachii muscle was evaluated in the regions proximal and distal to the compression point, with and without compression. A split-plot analysis of variance was performed to compare the shear modulus, where the factors were 'measurement region (proximal, distal)' and 'condition (with and without compression).'RESULT:The significant main effect of 'condition' was found, and the shear modulus with compression was higher than that without compression (p < 0.01). No significant main effect of 'measurement region' or interaction was found (p = 0.50 and 0.13, respectively).CONCLUSION:The long head of the biceps brachii muscle, one of the fusiform muscles, may be lengthened by compression in the regions proximal and distal to the compression point, which was different from a pennate muscle. Furthermore, the lengthening of the muscle owing to compression may occur to the same extent in both regions.
DOI	10.1016/j.jbmt.2025.12.027
PMID	41927222