Beetroot juice contains high levels of inorganic nitrate (NO 3−) and its intake has proved
effective at increasing blood nitric oxide (NO) concentrations. Given the effects of NO in …

Caffeine used as a supplement has been shown to improve physical and cognitive
performance in several sport modalities due to its effects on the central nervous system. This …

Background CrossFit is a new strength and conditioning regimen involving short intense
daily workouts called workouts of the day (WOD). This study assesses muscular fatigue …

CrossFit® consists of workouts of the day (WODs) in which different exercises are conducted
at high intensity with minimal or no rest periods. This study sought to quantify exercise …

As a nitric oxide precursor, beetroot juice (BJ) is known to enhance high-intensity exercise
performance (80–100% VO2max) yet its impacts on higher intensity sprint exercise (> 100 …

Background β-Alanine (BA) is a non-essential amino acid that has been shown to enhance
exercise performance. The purpose of this investigation was to determine if BA …

Decision making is a core cognitive process of human behaviour that is often affected by
stress. Whilst we make several decisions on a daily basis, firefighters in particular are called …

Background Beetroot juice (BJ) is classified as a high-level supplement for improving sports
performance. There is some controversy over the benefits of BJ supplementation for …

In resistance training, load intensity is usually calculated as the percentage of a maximum
repetition (1RM) or maximum number of possible repetitions (% of 1RM). Some studies have …

Introduction There is a lack of information regarding the slow component of oxygen uptake
(VO2sc) and efficiency/economy in resistance exercises despite the crucial role played in …