Does a Multi-ingredient Pre-workout Supplement Enhance Cycling Time Trial Performance?

Does a Multi-ingredient Pre-workout Supplement Enhance Cycling Time Trial

The aim of the present study is to test the effect of ingesting a multi-ingredient pre- exercise supplement containing caffeine, creatine, beta-alanine and L-Citrulline compared to a placebo, on endurance exercise performance.

Exclusion criteria:

• Any diagnosed metabolic health condition
• Pregnant
• Non-habitual caffeine intake
• Smoker
• No endurance training
• Diagnosed Cardiovascular disease
• Recent history of musculoskeletal injury
• Anti-depressant and anti-anxiety medication

Inclusion criteria

• Age 18-40
• Healthy
• Highly trained endurance athletes (V̇O2max: males >55 and females >50 mL⋅kg bm-1⋅min-1)
• Both males and females are allowed to participate. If females are on the oral contraceptive pill they are to be tested on consecutive weeks. If they are not on the oral contraceptive pill, then female subjects are to be tested every 4 weeks, at the same point of their menstrual cycle.