Journal
JOURNAL OF SPORTS SCIENCES
Volume 35, Issue 14, Pages 1402-1410Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02640414.2015.1085589
Keywords
Sleep; athletes; actigraphy; intensified training
Categories
Funding
- Pepsico Inc. [Gatorade Sports Science Institute]
Ask authors/readers for more resources
Few studies have investigated the effects of exercise training on sleep physiology in well-trained athletes. We investigated changes in sleep markers, mood state and exercise performance in well-trained cyclists undergoing short-term intensified training and carbohydrate nutritional intervention. Thirteen highly-trained male cyclists (age: 25 +/- 6y, O-2max: 72 +/- 5ml/kg/min) participated in two 9-day periods of intensified training while undergoing a high (HCHO) or moderate (CON) carbohydrate nutritional intervention before, during and after training sessions. Sleep was measured each night via wristwatch actigraphy. Mood state questionnaires were completed daily. Performance was assessed with maximal oxygen uptake . Percentage sleep time fell during intensified training (87.9 +/- 1.5 to 82.5 +/- 2.3%; p<0.05) despite an increase in time in bed (456 +/- 50 to 509 +/- 48min; p=0.02). Sleep efficiency decreased during intensified training (83.1 +/- 5.3 to 77.8 +/- 8.6%; p<0.05). Actual sleep time was significantly higher in CON than HCHO throughout intensified training. Mood disturbance increased during intensified training and was higher in CON than HCHO (p<0.05). Performance in the exercise protocol fell significantly with intensified training. The main findings of this study were that 9-days of intensified training in highly-trained cyclists resulted in significant and progressive declines in sleep quality, mood state and maximal exercise performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available