Risk factors for hamstring strain injury in male college American football players -a preliminary prospective cohort study-
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Published:2023-06-02
Issue:1
Volume:24
Page:
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ISSN:1471-2474
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Container-title:BMC Musculoskeletal Disorders
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language:en
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Short-container-title:BMC Musculoskelet Disord
Author:
Mizutani Yuri,Taketomi Shuji,Kawaguchi Kohei,Takei Seira,Yamagami Ryota,Kono Kenichi,Kage Tomofumi,Sameshima Shin,Inui Hiroshi,Fujiwara Sayaka,Tanaka Sakae,Ogata Toru
Abstract
Abstract
Background
Given the frequency of hamstring strain injuries (HSI) among male college American football players, several studies have attempted to determine whether certain risk factors can predict their occurrence. However, no consensus on modifiable risk factors for HSIs in male college American football players has yet been reached to prevent these injuries. This study aimed to clarify risk factors for HSI prospectively in college male American football players.
Methods
A total of 78 male college American football players, whose positions were limited to skill positions, were medically assessed for potential risk factors of HSI. The preseason medical assessment included anthropometric measurements, joint laxity and flexibility, muscle flexibility, muscle strength, and balance ability.
Results
HSI occurred in a total of 25 thighs from 25 players (32.1%). Injured players had significantly lower hamstring flexibility (p = 0.02) and hamstring to quadriceps strength ratio (H/Q) (p = 0.047) compared to uninjured players. Additionally, injured players had significantly lower general joint laxity scores, especially for the total (p = 0.04), hip (p = 0.007), and elbow (p = 0.04) scores, compared to uninjured players.
Conclusions
Lower hamstring flexibility, lower hamstring to quadriceps strength ratio, and lower general joint laxity score were identified as risk factors for HSI in male college American football players placed in skill positions. The muscle flexibility and H/Q ratio could be useful in preventing HSI in such players.
Funder
East Japan Railway Company
Shimamura-Syoukai
Nakatomi Foundation
Japanese orthopaedic society of knee, arthroscopy and sports medicine
Japanese sports medicine foundation
Japan sport council
the Watanabe Memorial Foundation for the Advancement of Technology
Japan Orthopaedics and Traumatology Foundation
Japan Society for the Promotion of Science KAKENHI
Publisher
Springer Science and Business Media LLC
Subject
Orthopedics and Sports Medicine,Rheumatology
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