🎙️ Podcast Overview
Host: Evan Nelson, Associate Professor at theUniversity of Wisconsin
Guests:
🏃♂️ Topic: MeasuringTraining Load in High School Cross Country Runners
The episode explores how to best track training loads inhigh school runners, comparing GPS watches and electronictraining journals.
📊 Key Concepts
External Load: Objective measures like distance and time.
Internal Load: Subjective or physiological responses like perceived exertion or heart rate.
📄 Study Summary
Title: “Global Positioning System Watches and Electronic Journals: Are Training Load Measures Similar in High School Cross Country Runners?”
Published: 2022, International Journal of Sports Physiology and Performance
Authors: Dr. Micah Garcia & David Bazzett-Jones
🔍 Purpose:
To compare data from GPS watches and electronic journals toassess consistency in tracking training loads.
📈 Findings:
GPS watches provided more consistent and complete data for external loads.
Journals often had missing entries (about 1/3 of GPS-recorded runs were not journaled).
When both sources were available, journal entries tended to overreport distance and time by ~10%.
Internal load (perceived exertion vs. heart rate) showed poor agreement—heart rate data from wrist-based GPS watches was often inaccurate.
🧠 Insights from Dr. Garcia
GPS watches are more reliable for external load tracking.
Subjective perceived exertion may be more accurate than wrist-based heart rate for internal load.
Coaches should choose tools based on their goals and available resources.
🏫 Coaching Perspectivefrom Coach Burnham
Prioritizes external load (time and distance), especially time-based training for inclusivity.
Uses a Google spreadsheet for summer training logs; less structured during the season.
Emphasizes fun, consistency, and long-term love for the sport over strict data tracking.
Notes challenges with technology access, motivation, and accuracy among high school athletes.
🧩 Practical Takeaways
GPS watches are effective for capturing external load but may not reflect perceived effort.
Self-reported intensity is valuable but requires routine and motivation.
Coaching context matters: team size, athlete experience, and program goals influence the best tracking method.
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