CAFFEINE INFLUENCES PERFORMANCE, MUSCLE PAIN, MUSCLE DAMAGE MARKER, BUT NOT LEUKOCYTOSIS IN SOCCER PLAYERS
Journal Title: Medicina Sportiva - Year 2012, Vol 16, Issue 1
Abstract
Introduction: Caffeine is commonly used by athletes to improve exercise performance but the effects of caffeine supplementation on strenuous intermittent exercise performance, perceived muscle pain, muscle damage markers and immunological response in soccer players are not conclusive. Objective: To evaluate the effect of caffeine supplementation on strenuous intermittent exercise performance, perceived muscle pain, muscle damage markers and immunological response in soccer players. Methods: Twenty male professional soccer players completed a placebo-controlled double blind test protocol. At 45 min before exercise, participants ingested 5.5 mg•kg-1 body mass of caffeine (CAF, n=10) or cellulose (PLA, n=10). The exercise was 2 trials of 6 sets of 10 sprints (20m each) with 10s recovery time between sprints, 2 min between sets and 15 min between trials followed by a strenuous intermittent exercise (Yo-Yo intermittent recovery test; Yo-Yo IRT). The performance of Yo-Yo IRT, the perceived muscle pain before exercise protocol, after sprints and after Yo-Yo IRT were recorded. Blood samples were collected before, immediately, 24 and 48h after exercise for serum creatine kinase (CK) activity quantification and immunological cell count. Results: Caffeine improved the performance during the strenuous intermittent exercise and reduced the perceived muscle pain along the exercise protocol (sprints and Yo-Yo IRT), without influence on muscle damage markers and im¬munological response. Conclusions: Our results suggest that caffeine (5.5 mg•kg-1 BM) produce large reduction in pain resulting from strenuous intermittent exercise which is associated to the performance gains of soccer players. Additionally, the used caffeine dosage has no influence upon serum CK activity, reflective of muscle integrity and damage, and upon immunological cell count.
Authors and Affiliations
Lucas Pereira, Marco Machado, Welton Antunes, Andre Luiz Tamy, Ana Barbosa, Rafael Pereira
Keywords
Related Articles
- EP ID EP74172
- DOI -
- Views 156
- Downloads 0
DETECTION OF EUHYDRATION IN HUMANS FROM THE DIURESIS RESPONSE TO A WATER LOAD
Objectives: to calculate the minimum amount of water to be ingested in order to find significant differences in one-hour urine volume between euhydrated and dehydrated humans.Methods: Five participants (22.6±2.9 years o...
CRITICAL COMMENTARY: THE NSCA POSITION STATEMENT ON YOUTH RESISTANCE TRAINING
In an updated Position Statement on youth resistance training, the National Strength and Conditioning Association claimed that the Statement was based on a comprehensive analysis of the scientific evidence for resistanc...
DEVELOPING AN OBJECTIVE CRITERIA FOR RECOMMENDATIONS TO ATHLETES PRIOR TO A RETURN TO FULL TRAINING FOLLOWING KNEE ACL RECONSTRUCTION
Objective: To determine the cause of the pain and swelling that occurs after a return to training in athletes following reconstruction of the anterior cruciate ligament.Methods: The study involved 42 athletes who had und...
CRITICAL REVIEW OF A META-ANALYSIS FOR THE EFFECT OF SINGLE AND MULTIPLE SETS OF RESISTANCE TRAINING ON STRENGTH GAINS
A meta-analysis is a controversial statistical procedure that combines the data from several independent studies in an attempt to produce an estimate for the effectiveness of a specific intervention. The validity of a me...
WOMEN ACHIEVE PEAK SWIM PERFORMANCE IN INDIVIDUAL MEDLEY AT EARLIER AGES THAN MEN
Introduction: Previous studies suggested that the age of peak swim performance in freestyle swimming was ~17 years for women and ~19 years for men. However, no study investigated the age of peak swim performance in other...