Canino Maria C, Cohen Bruce S, Redmond Jan E, Sharp Marilyn A, Zambraski Edward J, Foulis Stephen A
Military Performance Division, U.S. Army Research Institute of Environmental Medicine, 10 General Greene Ave. Building 42, Natick, MA01760.
Mil Med. 2018 May 1;183(5-6):e182-e187. doi: 10.1093/milmed/usx081.
The 20-m shuttle run test (MSRT) is a common field test used to measure aerobic fitness in controlled environments. The U.S. Army currently assesses aerobic fitness with the two-mile run (TMR), but external factors may impact test performance. The aim of this study is to examine the relationship between the Army Physical Fitness Test TMR performance and the MSRT in military personnel.
A group of 531 (403 males and 128 females) active duty soldiers (age: 24.0 ± 4.1 years) performed the MSRT in an indoor facility. Heart rate was monitored for the duration of the test. Post-heart rate and age-predicted maximal heart rate were utilized to determine near-maximal performance on the MSRT. The soldiers provided their most recent Army Physical Fitness Test TMR time (min). A Pearson correlation and multiple linear regression analyses were performed to examine the relationship between TMR time (min) and MSRT score (total number of shuttles completed). The study was approved by the Human Use Review Committee at the U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts.
A significant, negative correlation exists between TMR time and MSRT score (r = -0.75, p < 0.001). Sex and MSRT score significantly predicted TMR time (adjusted R2 = 0.65, standard error of estimate = 0.97, p < 0.001) with a 95% ratio limits of agreement of ±12.6%. The resulting equation is: TMR = 17.736-2.464 × (sex) - 0.050 × (MSRT) - 0.026 × (MSRT × sex) for predicted TMR time. Males equal zero, females equal one, and MSRT score is the total number of shuttles completed.
The MSRT is a strong predictor of the TMR and should be considered as a diagnostic tool when assessing aerobic fitness in active duty soldiers.
20米穿梭跑测试（MSRT）是一种在可控环境中用于测量有氧适能的常见现场测试。美国陆军目前通过两英里跑（TMR）来评估有氧适能，但外部因素可能会影响测试表现。本研究的目的是探讨陆军体能测试TMR表现与军事人员MSRT之间的关系。
一组531名（403名男性和128名女性）现役士兵（年龄：24.0±4.1岁）在室内设施中进行MSRT。在测试过程中监测心率。利用测试后的心率和年龄预测的最大心率来确定MSRT的接近最大表现。士兵们提供了他们最近一次陆军体能测试的TMR时间（分钟）。进行了Pearson相关性分析和多元线性回归分析，以研究TMR时间（分钟）与MSRT分数（完成的穿梭跑总数）之间的关系。该研究得到了位于马萨诸塞州纳蒂克的美国陆军环境医学研究所人类使用审查委员会的批准。
TMR时间与MSRT分数之间存在显著的负相关（r = -0.75，p < 0.001）。性别和MSRT分数显著预测了TMR时间（调整后的R2 = 0.65，估计标准误差 = 0.97，p < 0.001），一致性比例的95%界限为±12.6%。得出的方程为：预测TMR时间的TMR = 17.736 - 2.464×（性别） - 0.050×（MSRT） - 0.026×（MSRT×性别）。男性为零，女性为一，MSRT分数为完成的穿梭跑总数。
MSRT是TMR的有力预测指标，在评估现役士兵的有氧适能时应被视为一种诊断工具。
