60-Hour Sleep Deprivation Affects Submaximal but Not Maximal Physical Performance

Area of Science:

• Exercise Physiology
• Sleep Science
• Human Performance

Background:

• Sleep deprivation (SD) is common in military and athletic populations.
• Understanding its effects on physical performance and motor control is crucial.

Purpose of the Study:

• To investigate the impact of 60-hour sleep deprivation on aerobic performance, maximal strength, and motor control in cadets.

Main Methods:

• Assessed VO2, heart rate, ventilation, and lactate at submaximal and maximal loads.
• Measured maximal strength, EMG, and rate of force development.
• Evaluated balance, reaction times, and motor control during the sleep deprivation period.

Main Results:

• Maximal aerobic and strength performances were unaffected by 60-hour SD.
• Submaximal cardiorespiratory responses (heart rate, VO2, ventilation) were attenuated.
• Motor control and reaction times showed significant main effects but lacked consistent patterns of change.

Conclusions:

• Maximal physical and neuromuscular functions are resilient to 60-hour sleep deprivation.
• Submaximal aerobic capacity and cardiorespiratory efficiency are impaired.
• Motor control is largely preserved, though subtle changes may occur.