English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The aim of this study was to investigate acute performance and physiological responses to the manipulation of exercise‐to‐rest ratio (E:R) during repeated‐sprint hypoxic training (RSH) in hot conditions. Twelve male team‐sport players completed two experimental sessions at a simulated altitude of ∼3000 m (F I O 2  0.144), air temperature of 40°C and relative humidity of 50%. Exercise involved either 3 × 5 × 10‐s (E:R 1:2 ) or 3 × 10 × 5‐s (E:R 1:4 ) maximal cycling sprints interspersed with active recoveries at 120W (20‐s between sprints, 2.5 and 5‐min between sets for E:R 1:2  and E:R 1:4  respectively). Sessions were matched for overall sprint and total session duration (47.5‐min). Peak and mean power output, and total work were greater in E:R 1:4  than E:R 1:2  ( p  &lt; 0.05). Peak core temperature was significantly higher in E:R 1:4  than E:R 1:2  (38.44 ± 0.33 vs. 38.20 ± 0.35°C,  p  = 0.028). Muscle deoxygenation magnitude during sprints was greater in E:R 1:2  (28.2 ± 1.6 vs. 22.4 ± 4.6%,  p  &lt; 0.001), while muscle reoxygenation did not differ between conditions ( p  &gt; 0.05). These results indicate E:R 1:4  increased mechanical power output and core temperature compared to E:R 1:2 . Both protocols had different effects on measures of muscle oxygenation, with E:R 1:2  generating greater muscle oxygen extraction and E:R 1:4  producing more muscle oxygenation flux, which are both important signals for peripheral adaptation. We conclude that the E:R manipulation during RSH in the heat might be used to target different physiological and performance outcomes, with these findings forming a strong base for future mechanistic investigation.

Repeated‐sprint training in heat and hypoxia: Acute responses to manipulating exercise‐to‐rest ratio