Relationship between Trunk Muscularity and Club Head Speed in Male
                    Golfers

Yoka Izumoto; Toshiyuki Kurihara; Sumiaki Maeo; Takashi Sugiyama; Hiroaki Kanehisa; Tadao Isaka

doi:10.1055/a-1087-2332

International Journal of Sports Medicine, Inhaltsverzeichnis

Int J Sports Med 2020; 41(06): 419-423
DOI: 10.1055/a-1087-2332

Orthopedics & Biomechanics

Relationship between Trunk Muscularity and Club Head Speed in Male Golfers

Yoka Izumoto

¹Graduate School of Sport and Health Science, Ritsumeikan University, Kusatsu, Japan

,

Toshiyuki Kurihara

²Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Japan

,

Sumiaki Maeo

²Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Japan

,

Takashi Sugiyama

³Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Kusatsu, Japan

,

Hiroaki Kanehisa

⁴Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Japan

,

Tadao Isaka

⁴Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Japan

› Institutsangaben

Abstract

This study examined how the volume of trunk muscles and its bilateral asymmetry are related to club head speed in golfers. Fourteen right-handed male golfers performed five driver shots, and the club head speed for each trial was calculated from a three-dimensional reflective marker position of the club head immediately before impact. The volume of each side of the rectus abdominis, erector spinae, psoas major, quadratus lumborum, lateral abdominal wall muscle, and multifidus was determined using magnetic resonance imaging. For each muscle, the ratio of the larger to smaller side in muscle volume was calculated to assess bilateral asymmetry. The club head speed correlated positively with the volume of each side of the rectus abdominis and erector spinae, left quadratus lumborum, and the asymmetric ratio of the psoas major (r=0.595–0.747), but negatively with the asymmetric ratio of the quadratus lumborum (r=−0.641). Multiple regression analysis revealed that the right erector spinae volume and the asymmetric ratio of the psoas major were significant contributors for the club head speed (R²=0.797). These results indicate that the variation in the club head speed can be strongly explained by the absolute volume and bilateral asymmetry of specific trunk muscles.

Key words

magnetic resonance image - muscle volume - bilateral asymmetry - trunk rotation - golf swing - golf performance

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Referenzen

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