URINARY CREATINE AT REST AND AFTER REPEATED SPRINTS IN ATHLETES: A PILOT STUDY
Journal Title: Biology of Sport - Year 2014, Vol 31, Issue 1
Abstract
Creatine plays a key role in muscle function and its evaluation is important in athletes. In this study, urinary creatine concentration was measured in order to highlight its possible significance in monitoring sprinters. The study included 51 sprinters and 25 age- and sex-matched untrained subjects as a control group. Body composition was measured and dietary intake estimated. Urine samples were collected before and after standardized physical exercise. Creatine was assessed by gas chromatography mass spectrometry. Basal urinary creatine (UC) was significantly lower in sprinters than controls (34±30 vs. 74±3 µmol/mmol creatinine, p<0.05). UC was inversely correlated with body mass (r=-0.34, p<0.01) and lean mass (r=- 0.30, p<0.05), and positively correlated with fat mass (r=0.32, p<0.05). After acute exercise, urinary creatine significantly decreased in both athletes and controls. UC is low in sprinters at rest and further decreases after exercise, most likely due toa high uptake and use of creatine by muscles, as muscle mass and physical activity are supposed to be greater in athletes than untrained subjects. Further studies are needed to test the value of urinary creatine as a non-invasive marker of physical condition and as a parameter for managing Cr supplementation in athletes.
Authors and Affiliations
Ikram Bezrati-Benayed, Fehmi Nasrallah, Moncef Feki, Karim Chamari, Souheil Omar , Leila Alouane-Trabelsi , Abederraouf Ben Mansour, Naziha Kaabachi
Keywords
Related Articles
- EP ID EP59187
- DOI -
- Views 91
- Downloads 0
THE ACUTE EFFECT OF WHOLE BODY VIBRATION TRAINING ON FLEXIBILITY AND EXPLOSIVE STRENGTH OF YOUNG GYMNASTS
The purpose of this study was to examine the acute effect of a single bout of whole body vibration (WBV) on flexibility and explosive strength of lower limbs in young artistic gymnasts. Thirty-two young competitive gymna...
EFFECTS OF CYCLIC STATIC STRETCH ON FATIGUE RECOVERY OF TRICEPS SURAE IN FEMALE BASKETBALL PLAYERS
Static stretch is a safe and feasible method which usually is used before exercise to avoid muscle injury and to improve muscle performance. The purpose of this study was to determine the effects of cyclic static stretch...
STRATEGY OF VISUAL PROPRIOCEPTIVE CONTROL IN PATIENTS WITH INJURY TO THE ANTERIOR CRUCIATE LIGAMENT OF THE KNEE AND HEALTHY INDIVIDUALS (SOCCER PLAYERS)
Objective: Knee joint dysfunction resulting from injury to the anterior crucial ligament (ACL) is associated not only with mechanical joint instability but also with damage of ligamentous receptors responsible for the jo...
Nutrition, activity behavior and body constitution in primary school children
Child and adolescent obesity currently affects at least 10-25% of the paediatric population in most developed countries. The BMI value is one of the most appropriate method of defining obesity and has a strong associatio...
DOES AEROBIC EXERCISE TRAINING PROMOTE CHANGES IN STRUCTURAL AND BIOMECHANICAL PROPERTIES OF THE TENDONS IN EXPERIMENTAL ANIMALS? A SYSTEMATIC REVIEW
To develop a systematic review to evaluate, through the best scientific evidence available, the effectiveness of aerobic exercise in improving the biomechanical characteristics of tendons in experimental animals. Two ind...