Physical and performance characteristics related to starter status, position, and division in Japanese collegiate American-football players

IF 0.6 4区医学 Q4 ENGINEERING, BIOMEDICAL

Isokinetics and Exercise Science Pub Date : 2021-05-28 DOI:10.3233/IES-200222

J. Iguchi, M. Matsunami, T. Hojo, Y. Fujisawa, K. Kuzuhara, Yasuhiro Yuasa, Toshiya Kitazawa

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引用次数: 0

Abstract

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.

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日本大学美式足球运动员的身体和表现特征与首发状态、位置和分区有关

背景：很少有研究调查日本大学美式足球运动员身体成分和表现的变化。目的：为了阐明顶级联赛或首发阵容中最高级别竞争对手的特点，我们比较了球员的身体成分和性能测试结果。方法：本研究包括172名运动员。测量每个选手的身体组成和表现（一次重复最大卧推、一次重复最深后蹲和垂直跳跃高度）；力量是根据垂直跳跃的高度和体重来估计的。根据状态（先发球员与非先发球员）、位置（技术与内线球员）和分区（1比2）对球员进行比较。进行回归分析以确定作为启动器的特征。结果：高级别和先发球员更强壮，力量更大，体型更大，成绩测试结果更好。技术位置的球员相对来说比边线队员位置的球员更强。垂直跳跃高度是成为一级联赛首发球员的重要预测因素。结论：力量和垂直跳跃可能是作为首发或在更高级别比赛的决定因素。

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来源期刊

Isokinetics and Exercise Science 医学-工程：生物医学

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Isokinetics and Exercise Science (IES) is an international journal devoted to the study of theoretical and applied aspects of human muscle performance. Since isokinetic dynamometry constitutes the major tool in this area, the journal takes a particular interest in exploring the considerable potential of this technology. IES publishes studies associated with the methodology of muscle performance especially with respect to the issues of reproducibility and validity of testing, description of normal and pathological mechanical parameters which are derivable from muscle testing, applications in basic research topics such as motor learning paradigms and electromyography. The journal also publishes studies on applications in clinical settings and technical aspects of the various measurement systems employed in human muscle performance research. The journal welcomes submissions in the form of research papers, reviews, case studies and technical reports from professionals in the fields of sports medicine, orthopaedic and neurological rehabilitation and exercise physiology.