เปรียบเทียบวิธี

	การเคลื่อนไหวด้วยระบบจีพีเอส	อัตราส่วนภาระงานเฉียบพลันต่อเรื้อรัง
สาขาวิชา	วิทยาศาสตร์การกีฬา	วิทยาศาสตร์การกีฬา
ตระกูล	Hypothesis test	Hypothesis test
ปีกำเนิด	2010	2016
ผู้ริเริ่ม	Osgnach & Di Prampero	Tim Gabbett
ประเภท	GPS tracking	workload monitoring
แหล่งต้นตำรับ	Gregory, P., & Drust, B. (2007). Physical demands of rugby union: quantification of accelerations and movements patterns in play. Journal of Strength and Conditioning Research, 21(2), 309-314.	Gabbett, T. J. (2016). The training-injury prevention paradox: should athletes be training smarter and harder? British Journal of Sports Medicine, 50(5), 273-280.
ชื่อเรียกอื่น	GPS analysis, movement tracking, workload quantification, physical demands	ACWR, workload ratio, training load balance
ที่เกี่ยวข้อง	4	3
สรุป	Time-motion analysis with GPS and micro-sensor technology quantifies the movement patterns, workload, and physical demands during training or match play in team sports. Pioneered by Osgnach and colleagues (2010), modern GPS units track athletes' positions in real-time, calculating distance covered, velocity profiles, and acceleration/deceleration frequencies. Combined with heart rate and other sensor data, GPS analysis provides comprehensive workload quantification enabling coaching staff to monitor player fatigue, balance training intensity, and prevent injury. GPS is now standard in elite soccer, rugby, Australian Rules football, and other intermittent sports.	The acute-chronic workload ratio (ACWR) is the ratio of acute training load (typically the past 1 week) to chronic training load (typically the rolling 4-week average). Formalized by Tim Gabbett (2016), ACWR is a widely adopted metric for predicting injury and illness risk in sports. The logic is straightforward: rapid increases in training load—when acute load spikes far above what the athlete has adapted to—exceed tissue tolerance and increase injury risk. Conversely, maintaining ACWR within optimal ranges (typically 0.8-1.3) is associated with better performance and lower injury incidence. ACWR monitoring is now standard in elite sports for load management.