College of Health and Human Services, University of Toledo, Toledo, OH,USA.
Int J Sports Physiol Perform. 2022 May 23;17(7):1132-1139. doi: 10.1123/ijspp.2021-0563. Print 2022 Jul 1.
Running programs are designed to progress training loads by manipulating the duration, frequency, and/or intensity of running sessions. While some studies use journals to monitor training load, others have used wearable technology. The purpose of this study was to compare the validity of self-reported and global positioning system (GPS)-watch-derived measures of external and internal loads in high school cross-country runners.
Twenty-two high school cross-country runners participated in the study during fall 2020. Participants recorded running sessions using a GPS watch and self-reported the running session using an electronic journal. External (distance and duration) and internal loads (session rating of perceived exertion [sRPE], average, and maximum heart rate) were retrieved from the GPS watch and electronic journal. Correlations compared relationships, and Bland-Altman plots compared agreements between GPS-watch-derived and self-reported measures of training loads.
We found moderate relationships between self-reported and GPS-watch-derived measures of external loads (distance: r = .76, moving duration: r = .74, and elapsed duration: r = .70) and poor relationships between internal loads (sRPE vs average heart rate: ρ = .11, sRPE vs maximal heart rate: ρ = .13). We found mean differences of -0.8 km (95% = -6.3 to +4.8 km) for distance, -4.5 minutes (95% = -27.8 to +33.2 min) for moving duration, and 2.7 minutes (95% = -27.8 min to +33.2 min) for elapsed duration.
High school runners overreported running distance and duration using self-reports, and self-reported and GPS-watch-derived measures of internal loads demonstrated poor agreement. Coaches and clinicians should use caution when comparing results from studies using different methods of monitoring training loads.
跑步程序旨在通过控制跑步课程的持续时间、频率和/或强度来逐步增加训练负荷。虽然有些研究使用日志来监测训练负荷，但其他研究则使用可穿戴技术。本研究的目的是比较高中越野跑运动员自我报告和全球定位系统 (GPS) 手表得出的外部和内部负荷测量值的有效性。
2020 年秋季，22 名高中越野跑运动员参加了这项研究。参与者使用 GPS 手表记录跑步课程，并使用电子日志记录跑步课程。从 GPS 手表和电子日志中检索外部（距离和持续时间）和内部负荷（会话感知运动强度评分[sRPE]、平均和最大心率）。相关性比较了关系，Bland-Altman 图比较了 GPS 手表和自我报告的训练负荷测量值之间的一致性。
我们发现自我报告和 GPS 手表衍生的外部负荷测量值之间存在中度关系（距离：r =.76，移动时间：r =.74，总时间：r =.70），而内部负荷之间的关系较差（sRPE 与平均心率：ρ =.11，sRPE 与最大心率：ρ =.13）。我们发现距离的平均差异为-0.8 公里（95%置信区间：-6.3 至 +4.8 公里），移动时间的平均差异为-4.5 分钟（95%置信区间：-27.8 至 +33.2 分钟），总时间的平均差异为 2.7 分钟（95%置信区间：-27.8 分钟至 +33.2 分钟）。
高中跑步运动员在使用自我报告时会高估跑步距离和时间，而自我报告和 GPS 手表衍生的内部负荷测量值之间的一致性较差。当使用不同的监测训练负荷的方法比较研究结果时，教练和临床医生应谨慎行事。
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