Short-Term Perceptually Regulated Interval-Walk Training in Hypoxia and Normoxia in Overweight-to-Obese Adults
| Autor: | Steve Hunter, Liam Hobbins, Nadia Gaoua, Olivier Girard |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male medicine.medical_specialty Physical Exertion Sensation Blood Pressure Walk Test 030209 endocrinology & metabolism Physical Therapy Sports Therapy and Rehabilitation Walking Overweight Interval training Body Mass Index 03 medical and health sciences 0302 clinical medicine Internal medicine Heart rate medicine Humans Orthopedics and Sports Medicine Obesity Treadmill Hypoxia interval training Rating of perceived exertion Exercise Tolerance business.industry 030229 sport sciences Hypoxia (medical) Oxygen Blood pressure GV557-1198.995 Sports medicine Exercise Test Cardiology Female cardio-metabolic health medicine.symptom business hypoxic conditioning perceptually regulated exercise RC1200-1245 Body mass index Sports Research Article |
| Zdroj: | J Sports Sci Med Journal of Sports Science and Medicine, Vol 20, Iss 1, Pp 45-51 (2021) |
| ISSN: | 1303-2968 |
| Popis: | We compared the effects of short-term, perceptually regulated training using interval-walking in hypoxia vs. normoxia on health outcomes in overweight-to-obese individuals. Sixteen adults (body mass index = 33 ± 3 kg·m-2) completed eight interval-walk training sessions (15 × 2 min walking at a rating of perceived exertion of 14 on the 6-20 Borg scale; rest = 2 min) either in hypoxia (FiO2 = 13.0%) or normoxia during two weeks. Treadmill velocity did not differ between conditions or over time (p > 0.05). Heart rate was higher in hypoxia (+10 ± 3%; p = 0.04) during the first session and this was consistent within condition across the training sessions (p > 0.05). Similarly, arterial oxygen saturation was lower in hypoxia than normoxia (83 ± 1% vs. 96 ± 1%, p < 0.05), and did not vary over time (p > 0.05). After training, perceived mood state (+11.8 ± 2.7%, p = 0.06) and exercise self-efficacy (+10.6 ± 4.1%, p = 0.03) improved in both groups. Body mass (p = 0.55), systolic and diastolic blood pressure (p = 0.19 and 0.07, respectively) and distance covered during a 6-min walk test (p = 0.11) did not change from pre- to post-tests. Short term (2-week) perceptually regulated interval-walk training sessions with or without hypoxia had no effect on exercise-related sensations, health markers and functional performance. This mode and duration of hypoxic conditioning does not appear to modify the measured cardiometabolic risk factors or improve exercise tolerance in overweight-to-obese individuals. |
| Databáze: | OpenAIRE |
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