Acute sleep deprivation reduces carbohydrate use during exercise 💤
One night of poor sleep could have significant metabolic consequences.
Acute Sleep Deprivation Shifts Substrate Utilization Toward Greater Fat Oxidation During Incremental Exercise in Recreationally Trained Adults
Study Details
This new study recruited 32 recreationally trained adults to complete a crossover trial with three conditions…
1️⃣ Normal sleep (8hrs)
2️⃣ Early sleep deprivation (4hrs)
3️⃣ Total sleep deprivation (0hrs)
The following morning, participants performed an incremental cycling test to determine effects on substrate utilisation 🔍
Key Findings
Compared to normal and early sleep deprivation, total sleep deprivation led to significantly…
🔥 Increased maximal fat oxidation (absolute and relative to FFM)
🚨 Maximal carb oxidation was significantly reduced (~14%) with total sleep deprivation vs normal sleep
❎ No differences were observed in Fatmax or energy expenditure
Sleep restriction also significantly increased…
🫀 Resting heart rate (+5%)
🩸 Systolic blood pressure (+6%)
Subjective fatigue, confusion, sleepiness, and perceived exertion were higher after total sleep deprivation 🧠
Conclusion
One night of sleep deprivation shifts exercise substrate utilisation toward greater fat oxidation and lower carbohydrate use 💤
Therefore, training quality, recovery and performance could be negatively affected when sleep is compromised ‼️
Reference
https://onlinelibrary.wiley.com/doi/10.1111/sms.70314
Performance Nutrition Digest is powered by Healthspan Elite ⚡️
Healthspan Elite is a science-led sports nutrition range developed in collaboration with leading experts to support athletic performance, recovery, and health.
Use code: TCDIGEST25 for 25% off at https://www.healthspanelite.co.uk/ 💪