Secondary Catalogue

When the body exercises, acute responses occur in the cardiovascular system, and our presenter wants to know more as she does her workout. Drawing on the expertise of a CrossFit coach, a highly trained athlete and a sports scientist, she explores how the muscles’ demand for more oxygen is met by changes in the heart rate, stroke volume, cardiac output and blood pressure. Show Less

During exercise, multiple acute responses occur in the body to deliver more oxygen to the muscles. With the assistance of her CrossFit coach, a trained athlete, and a sports scientist, our presenter takes us through some of these responses, including recruitment of slow and fast-twitch muscle fibres, arteriovenous oxygen difference, enzyme concentration and lactic acid build-up. Show Less

As our presenter undertakes some high intensity exercise with her CrossFit coach and a trained athlete to assist, she takes a close look at how the respiratory system responds. During the session, a sports scientist explains key areas such as tidal volume, respiratory rate, ventilation, diffusion of gases in the lungs, oxygen deficit, VO2 max and EPOC. Show Less