Caffeine ingestion, affect and perceived exertion during prolonged cycling
Susan H Backhouse1, Stuart J H Biddle, Nicolette C Bishop
1Carnegie Research Institute, Leeds Metropolitan University, Leeds, UK. s.backhouse@leedsmet.ac.uk
Appetite
|May 25, 2011
Summary
Caffeine supplementation improved mood and reduced perceived exertion during prolonged cycling. This suggests caffeine may enhance endurance performance by positively impacting the subjective experience of exercise.
Area of Science:
- Exercise Physiology
- Sports Science
- Nutritional Science
Background:
- Caffeine is a well-known ergogenic aid, impacting metabolism and performance.
- Limited research exists on caffeine's influence on affective states during endurance exercise.
Purpose of the Study:
- To investigate the effects of caffeine on affective states and perceived exertion during prolonged cycling.
- To determine if caffeine ingestion can maintain a more positive subjective experience during endurance exercise.
Main Methods:
- Randomized, double-blind, placebo-controlled, counterbalanced study design.
- Twelve endurance-trained male cyclists completed 90 minutes of cycling at 70% VO2 max.
- Caffeine (6 mg kg⁻¹ BM) or placebo was ingested 1 hour prior to exercise.
Main Results:
- Pleasure ratings were significantly better maintained in the caffeine trial compared to placebo.
- Perceived exertion increased throughout exercise but was significantly lower overall with caffeine.
- Perceived arousal was elevated during exercise but did not differ between conditions.
Conclusions:
- Moderate caffeine intake improves the subjective experience during prolonged cycling.
- Caffeine may enhance endurance performance by positively modulating affect and reducing perceived exertion.
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