Torres Ricardo E, Heileson Jeffrey L, Richardson Kathleen A, Chapman-Lopez Tomas J, Funderburk LesLee K, Forsse Jeffrey S
Integrated Laboratory of Exercise, Nutrition, and Renal Vascular Research, Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX 76798-7313, USA.
Walter Reed Army Medical Center, Bethesda, MD 20814, USA.
Mil Med. 2023 Jul 22;188(7-8):e2096-e2101. doi: 10.1093/milmed/usad009.
The Army Combat Fitness Test (ACFT) is a performance assessment used by the U.S. Army to assess a cadet's strength, endurance, and agility with a series of six events to ensure that cadets are combat ready. Heart rate variability (HRV) is an instrument that measures cardiac autonomic modulation and has been incorporated to predict the performance of athletes in daily training and competition since acute bouts of exercise alter HRV variables.
To assess the applicability of using HRV to predict ACFT score performance outcomes in cadets.
Fifty army cadets (n = 36 male; n = 14 female; age = 20.60 ± 3.61 years; height = 173.34 ± 10.39 cm; body mass = 76.33 ± 14.68 kg; body fat percentage = 17.58 ± 5.26%) completed the ACFT and reported for HRV assessment. HRV assessment had the participant lay supine for 5 minutes, and traditional time and frequency domain variables were assessed. A Pearson's correlation and multiple linear regressions were run.
HRV time and frequency domains were not significantly correlated in linear regression models except the stress index (SI) and the 2-mile run (2MR). The standing power throw and sprint drag carry were significantly correlated with traditional HRV variables.
HRV was not a predictor of ACFT performance for individual events or overall ACFT. The SI presented predictive properties only for 2MR, with no other significant correlations between HRV variables with standing power throw and sprint drag carry. The SI ability to predict 2MR performance outcome via HRV is a promising tool to assess army cadet performance and recovery.
陆军战斗体能测试（ACFT）是美国陆军用于通过一系列六项活动来评估学员力量、耐力和敏捷性的一项表现评估，以确保学员具备战斗能力。心率变异性（HRV）是一种测量心脏自主神经调节的工具，由于急性运动发作会改变HRV变量，它已被用于预测运动员在日常训练和比赛中的表现。
评估使用HRV预测学员ACFT分数表现结果的适用性。
50名陆军学员（n = 36名男性；n = 14名女性；年龄 = 20.60 ± 3.61岁；身高 = 173.34 ± 10.39厘米；体重 = 76.33 ± 14.68千克；体脂百分比 = 17.58 ± 5.26%）完成了ACFT并接受HRV评估。HRV评估要求参与者仰卧5分钟，并评估传统的时域和频域变量。进行了Pearson相关性分析和多元线性回归分析。
在除应激指数（SI）和2英里跑（2MR）之外的线性回归模型中，HRV时域和频域无显著相关性。立定投力和短跑拖行与传统HRV变量显著相关。
HRV不是单个项目或总体ACFT表现的预测指标。SI仅对2MR表现出预测特性，HRV变量与立定投力和短跑拖行之间无其他显著相关性。通过HRV预测2MR表现结果的SI能力是评估陆军学员表现和恢复情况的一个有前景的工具。
