Sobolewski Eric J
Molnar Human Performance Lab, Department of Health Sciences, Furman University, Greenville, SC 29613, USA.
Sports (Basel). 2020 Dec 15;8(12):165. doi: 10.3390/sports8120165.
The aim of this study is to explore the relationships between internal and external load measures in American football. Thirty football players wore a portable integrated monitor unit for 10 weeks during the fall football season. Relationships between internal and external load measurements were determined. Internal load consisted of heart rate zones and heart rate-derived measures and session Ratings of Perceived Exertion (sRPE). External load consisted of distance in different speed zones, total distance traveled, and accelerations. There were many significant positive relationships, but the meaningful relationships ( > 0.5) were between heart rate-derived measures of load (Training Impulse and heart rate reserve) and low-intensity movement and total distance. Only accelerations between 1 and 1.99 m·s were moderately correlated to heart rate-derived internal load. RPE values alone did not correlate strong enough with any of the measure but sRPE training load (sRPE-TL) correlated to most external values. Overall, moderate correlations were present between heart rate-derived internal load to total distance and lower intensity movement. sRPE-TL values had high correlations but were highly dependent on duration, not perceived exertion. When addressing load in American football, duration of the session is a key component in determining internal load as HR data and sRPE alone do not correlate highly with external loads.
本研究的目的是探讨美式橄榄球运动中内部负荷与外部负荷测量指标之间的关系。在秋季橄榄球赛季期间，30名橄榄球运动员佩戴便携式综合监测设备达10周。确定了内部负荷与外部负荷测量指标之间的关系。内部负荷包括心率区间、心率衍生指标以及训练课的自感用力度（sRPE）。外部负荷包括不同速度区间的距离、总行进距离以及加速度。存在许多显著的正相关关系，但有意义的关系（>0.5）存在于负荷的心率衍生指标（训练冲量和心率储备）与低强度运动及总距离之间。仅1至1.99米·秒之间的加速度与心率衍生的内部负荷存在中度相关性。单独的RPE值与任何测量指标的相关性都不够强，但sRPE训练负荷（sRPE-TL）与大多数外部指标相关。总体而言，心率衍生的内部负荷与总距离及低强度运动之间存在中度相关性。sRPE-TL值具有高度相关性，但高度依赖于持续时间，而非感知到的用力程度。在研究美式橄榄球运动的负荷时，训练课的持续时间是确定内部负荷的关键因素，因为仅心率数据和sRPE与外部负荷的相关性并不高。
