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Assessment of Training Load, Sleep, Injuries, and Operational Physical Performance During Basic Military

Marie-Andrée Laroche1,2, Étienne Chassé3, Daniel Théoret3

  • 1Personnel Support Program, Canadian Forces Leadership and Recruit School, Richelain, QC J0J 1R0, Canada.

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Summary
This summary is machine-generated.

Canadian military recruits experienced high training loads and low sleep durations during basic training, potentially increasing injury risk. Operational fitness did not significantly improve by the course end.

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Area of Science:

  • Exercise physiology
  • Military medicine
  • Sports science

Background:

  • Optimizing training load (TL) and sleep is critical for physical performance and injury prevention in Canadian Forces recruits during the 10-week Basic Military Qualification (BMQ).
  • Understanding the interplay between TL, sleep, musculoskeletal injuries (MSKIs), and operational fitness is essential for military training programs.

Purpose of the Study:

  • To assess training load (TL) and sleep duration in Canadian Forces recruits during the BMQ course.
  • To determine the occurrence of musculoskeletal injuries (MSKIs) during the BMQ.
  • To evaluate operational fitness performance throughout the BMQ.

Main Methods:

  • Forty Canadian recruits (32 males, 8 females) were monitored for TL and sleep duration using wrist-worn accelerometers over 9 weeks.
  • Operational fitness was evaluated at weeks 2 and 10 using a job-based simulation test.
  • Injury surveillance was conducted throughout the 10-week BMQ course.

Main Results:

  • Weekly TL intensity varied significantly.
  • Average sleep duration was 5.4 hours, decreasing to 4.2 hours during field exercises.
  • Recruits experienced 95 days under medical restrictions due to MSKIs, with a significant difference in sleep duration observed between injured and uninjured recruits.
  • VO2peak significantly improved from week 2 to week 10 (P=0.001).

Conclusions:

  • Training load during BMQ is substantial and fluctuates weekly.
  • Low average sleep duration may negatively influence MSKI occurrence.
  • Despite improvements in VO2peak, overall operational fitness did not show significant enhancement by the end of the BMQ course.