Physiological responses to very short duration hypoxic exposure and its use for improving sprint performance during intermittent exercise
type: CreativeWork
description: Altitude training has been the subject of much research over the past forty year. However, research has focused on endurance performance and prolonged exposures to hypoxia have generally been employed to bring about improvements in performance. Few studies have investigated the responses to very short duration altitude exposures and its effects on performance. Moreover, research into the benefits of altitude training for improving the restoration of sprint performance during high intensity intermittent sports remains scarce. Therefore, this thesis aimed to determine the very acute responses to hypoxic exposure and the efficacy of repeated very short duration hypoxic exercise on recovery of sprint performance during intermittent activity. In addition, the thesis also aimed to determine the effect of such a training modality on oxidative stress levels and cellular damage during repeated sprint activity. Study one investigated the acute cerebral and skeletal oxygenation and cardiorespiratory responses to a single bout of very short duration (15 mm) hypoxic exposure (3048 m; F102 = 0.143) at rest and during exercise, and compared these to normoxic values. Both exercise conditions were performed at 65% of AP4lR max. The results of the study found that very short duration, hypoxic training stimulated significantly greater decreases in cerebral TOl over normoxic exercise (55.73 ± 2.77 and 64.02 ± 7.28%, respectively). Cerebral AHHb (31.07 ± 14.20 pmoFL 1 ) was also found to be significantly greater during hypoxic exercise than normoxic exercise (6.42 ± 8.04 pmoFLj and resting hypoxia (19.06 ± 7.40 pmohL 1 ). Skeletal TOI was not significantly different across all test conditions. However, skeletal AHH b (32.22 ± 20.81 pmolL 1 ) was significantly greater during hypoxic exercise than during resting hypoxia (10.23 ± 6.97 pmolL 1 ). Oxygen uptake and respiratory rate were not significantly different between normoxic and hypoxic exercise conditions, with mean V02 being 1.89 ± 0…
abstract: Altitude training has been the subject of much research over the past forty year. However, research has focused on endurance performance and prolonged exposures to hypoxia have generally been employed to bring about improvements in performance. Few studies have investigated the responses to very short duration altitude exposures and its effects on performance. Moreover, research into the benefits of altitude training for improving the restoration of sprint performance during high intensity intermittent sports remains scarce. Therefore, this thesis aimed to determine the very acute responses to hypoxic exposure and the efficacy of repeated very short duration hypoxic exercise on recovery of sprint performance during intermittent activity. In addition, the thesis also aimed to determine the effect of such a training modality on oxidative stress levels and cellular damage during repeated sprint activity. Study one investigated the acute cerebral and skeletal oxygenation and cardiorespiratory responses to a single bout of very short duration (15 mm) hypoxic exposure (3048 m; F102 = 0.143) at rest and during exercise, and compared these to normoxic values. Both exercise conditions were performed at 65% of AP4lR max. The results of the study found that very short duration, hypoxic training stimulated significantly greater decreases in cerebral TOl over normoxic exercise (55.73 ± 2.77 and 64.02 ± 7.28%, respectively). Cerebral AHHb (31.07 ± 14.20 pmoFL 1 ) was also found to be significantly greater during hypoxic exercise than normoxic exercise (6.42 ± 8.04 pmoFLj and resting hypoxia (19.06 ± 7.40 pmohL 1 ). Skeletal TOI was not significantly different across all test conditions. However, skeletal AHH b (32.22 ± 20.81 pmolL 1 ) was significantly greater during hypoxic exercise than during resting hypoxia (10.23 ± 6.97 pmolL 1 ). Oxygen uptake and respiratory rate were not significantly different between normoxic and hypoxic exercise conditions, with mean V02 being 1.89 ± 0…
author: Hurst, Howard Thomas
language: en
keywords: C640 - Sport studies, C800 - Psychology
date published: 2010-06
date modified: 2026-07-24T01:36:06Z
provider: University of Central Lancashire
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Central Lancashire