10/08/2021
Crossfit is a sport that uses a variety of tools to challenge the body in lots of different ways, competitively. This very recent study in the journal ‘Ergonomics’ assessed the physiological and biomechanical effects of the 20lb (9.07kg, males) and 14lb (6.35kg, females) weighted vest used in CrossFit, and whether it increased the risk of injury. 20 subjects (10 males, 10 females) walked and ran at different gradients (0%, 5% and 10%) in two randomised study visits (weighted vest/no weighted vest). It was found that physiological stress (oxygen uptake, heart rate and energy expenditure) is increased in both sexes, although three times more in males, but with no change in the subject’s gait pattern that could predispose the athlete to injury.