Lockie Robert G, Dawes J Jay, Orr Robin M, Dulla Joseph M
Center for Sport Performance, Department of Kinesiology, California State University, Fullerton, Fullerton, CA, USA.
School of Kinesiology, Applied Health and Recreation, Oklahoma State University, Stillwater, OK, USA.
Int J Exerc Sci. 2022 Apr 1;15(4):570-584. doi: 10.70252/HSKG7185. eCollection 2022.
California law enforcement recruits must perform a body drag before they graduate academy. While this task may be challenging for smaller recruits, no research has analyzed height and body mass relationships with the body drag. Data from 643 recruits (542 males, 101 females) who completed the drag in the final weeks of academy were analyzed. The recruits lifted a 74.84-kg, 1.73-m tall dummy and dragged it 9.75 m as quickly as possible. Independent samples -tests compared the sexes; partial correlations controlling for sex detailed relationships between height and body mass with drag time. Recruits were split into quartile groups (based on sample size) for height and body mass (Group 1: shortest, lightest; Group 4: tallest, heaviest). A one-way MANOVA, with sex as a covariate, and Bonferroni post hoc, compared the groups. Male recruits were taller, heavier, and completed the drag faster than females ( < 0.001). There were small relationships between height ( = -0.255) and body mass ( = -0.211) with drag time. When split into height groups, the shortest recruits (Group 1) completed the drag 23-37% slower than all groups ( ≤ 0.031). When split into body mass groups, the lightest recruits (Group 1) were 23-35% slower than all groups ( ≤ 0.007). Most females (94-96%) were placed in Groups 1 or 2. Height and body mass could influence drag performance. Taller recruits may be able to lift the dummy off the ground, reducing friction, while heavier recruits may produce more force. Female and smaller male recruits should complete strength and power training to mitigate body size limitations.
加利福尼亚州的执法新兵在警察学院毕业前必须进行一次人体拖拽任务。虽然这项任务对身材较小的新兵来说可能具有挑战性，但尚无研究分析身高和体重与人体拖拽任务之间的关系。对643名在警察学院最后几周完成该拖拽任务的新兵（542名男性，101名女性）的数据进行了分析。新兵们要抬起一个74.84千克、身高1.73米的假人，并尽快将其拖拽9.75米。采用独立样本t检验比较性别差异；控制性别因素的偏相关分析详细探讨了身高、体重与拖拽时间之间的关系。新兵们按身高和体重分为四分位组（基于样本量）（第1组：最矮、最轻；第4组：最高、最重）。以性别作为协变量进行单因素多变量方差分析，并采用邦费罗尼事后检验对各组进行比较。男性新兵比女性更高、更重，且完成拖拽任务的速度更快（P<0.001）。身高（r = -0.255）和体重（r = -0.211）与拖拽时间之间存在微弱的关系。按身高分组时，最矮的新兵（第1组）完成拖拽任务的速度比其他所有组慢23%-37%（P≤0.031）。按体重分组时，最轻的新兵（第1组）比其他所有组慢23%-35%（P≤0.007）。大多数女性（94%-96%）被分在第1组或第2组。身高和体重可能会影响拖拽表现。较高的新兵可能能够将假人抬离地面，减少摩擦力，而较重的新兵可能会产生更大的力量。女性新兵和身材较小的男性新兵应进行力量和体能训练，以减轻身材限制带来的影响。
