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 157
- Downloads 0
BLOOD GLUCOSE RESPONSE BEFORE AND DURING EXERCISE: THE EFFECTS OF FASTING AND MEALS WITH HIGH AND LOW GLYCEMIC INDICES
Objective: This study aimed to investigate the effects of 60-minute running in a fasting state compared to ingesting low and high glycemic index (GI) breakfasts one hour prior to exercise on plasma glucose and physiologi...
ACUTE RESPONSES OF RATE PRESSURE PRODUCT IN SETS OF RESISTANCE EXERCISE
Objective: To compare the acute responses of rate pressure product (RPP) between dynamic and isometric sets of resistance exercise (RE); compare the acute responses of RPP between upper and lower limbs in RE.Methods: Nin...
INJURIES AND MEDICAL INCIDENCES DURING THE IFSC 2012 CLIMBING WORLD CUP SERIES
Objective: To prospectively evaluate the injury risk and injury severity of climbers competing in the climbing World Cup series.Methods: In 2012 the International Federation of Sport Climbing (IFSC) implied, on demand of...
THE FASTEST FEMALE BUTTERFLYSWIMMERS WERE YOUNGER THAN THE FASTEST MALE BUTTERFLY SWIMMERS
Introduction: The age of peak freestyle swimming speed was reported to be at ~17 years for women and ~19 years for men. However, the age of peak swimming speed for other strokes such as butterfly is not known.Objectives:...
MIDDLE SCHOOL GIRLS’ PERCEPTIONS OF THEIR PHYSICAL EDUCATION CLASSES AND TEACHERS
Introduction: Providing meaningful opportunities for middle school students in physical education is one way to motivate them to continue to be physically active throughout their lifetime. Objective: To assess the attit...