HIIT produces increases in muscle power and free testosterone in male masters athletes
High-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in P...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Bioscientifica
2017-09-01
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| Series: | Endocrine Connections |
| Subjects: | |
| Online Access: | http://www.endocrineconnections.com/content/6/7/430.full |
| _version_ | 1818418632666906624 |
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| author | P Herbert LD Hayes NF Sculthorpe FM Grace |
| author_facet | P Herbert LD Hayes NF Sculthorpe FM Grace |
| author_sort | P Herbert |
| collection | DOAJ |
| description | High-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in PPO would be associated with steroid hormone perturbations. Seventeen male masters athletes (60 ± 5 years) completed the intervention, which comprised nine HIIT sessions over six weeks. HIIT sessions involved six 30-s sprints at 40% PPO, interspersed with 3 min active recovery. Absolute PPO (799 ± 205 W and 865 ± 211 W) and relative PPO (10.2 ± 2.0 W/kg and 11.0 ± 2.2 W/kg) increased from pre- to post-HIIT respectively (P < 0.001, Cohen’s d = 0.32−0.38). No significant change was observed for total testosterone (15.2 ± 4.2 nmol/L to 16.4 ± 3.3 nmol/L (P = 0.061, Cohen’s d = 0.32)), while a small increase in free testosterone occurred following HIIT (7.0 ± 1.2 ng/dL to 7.5 ± 1.1 ng/dL pre- to post-HIIT (P = 0.050, Cohen’s d = 0.40)). Six weeks’ HIIT improves PPO in masters athletes and increases free testosterone. Taken together, these data indicate there is a place for carefully timed HIIT epochs in regimes of masters athletes. |
| first_indexed | 2024-12-14T12:25:46Z |
| format | Article |
| id | doaj.art-1cc6068e7dab4a7194a9abf8e7acca4b |
| institution | Directory Open Access Journal |
| issn | 2049-3614 2049-3614 |
| language | English |
| last_indexed | 2024-12-14T12:25:46Z |
| publishDate | 2017-09-01 |
| publisher | Bioscientifica |
| record_format | Article |
| series | Endocrine Connections |
| spelling | doaj.art-1cc6068e7dab4a7194a9abf8e7acca4b2022-12-21T23:01:19ZengBioscientificaEndocrine Connections2049-36142049-36142017-09-0167430436HIIT produces increases in muscle power and free testosterone in male masters athletesP Herbert0LD Hayes1NF Sculthorpe2FM Grace3School of Sport, Health and Outdoor Education, Trinity Saint David, University of Wales, Wales, UKActive Ageing Research Group, Department of Medical and Sport Sciences, University of Cumbria, Lancaster, UKInstitute of Clinical Exercise and Health Science, University of the West of Scotland, Scotland, UKFaculty of Health, Federation University, Victoria, AustraliaHigh-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in PPO would be associated with steroid hormone perturbations. Seventeen male masters athletes (60 ± 5 years) completed the intervention, which comprised nine HIIT sessions over six weeks. HIIT sessions involved six 30-s sprints at 40% PPO, interspersed with 3 min active recovery. Absolute PPO (799 ± 205 W and 865 ± 211 W) and relative PPO (10.2 ± 2.0 W/kg and 11.0 ± 2.2 W/kg) increased from pre- to post-HIIT respectively (P < 0.001, Cohen’s d = 0.32−0.38). No significant change was observed for total testosterone (15.2 ± 4.2 nmol/L to 16.4 ± 3.3 nmol/L (P = 0.061, Cohen’s d = 0.32)), while a small increase in free testosterone occurred following HIIT (7.0 ± 1.2 ng/dL to 7.5 ± 1.1 ng/dL pre- to post-HIIT (P = 0.050, Cohen’s d = 0.40)). Six weeks’ HIIT improves PPO in masters athletes and increases free testosterone. Taken together, these data indicate there is a place for carefully timed HIIT epochs in regimes of masters athletes.http://www.endocrineconnections.com/content/6/7/430.fullcortisolHIITpowersteroidtestosterone |
| spellingShingle | P Herbert LD Hayes NF Sculthorpe FM Grace HIIT produces increases in muscle power and free testosterone in male masters athletes Endocrine Connections cortisol HIIT power steroid testosterone |
| title | HIIT produces increases in muscle power and free testosterone in male masters athletes |
| title_full | HIIT produces increases in muscle power and free testosterone in male masters athletes |
| title_fullStr | HIIT produces increases in muscle power and free testosterone in male masters athletes |
| title_full_unstemmed | HIIT produces increases in muscle power and free testosterone in male masters athletes |
| title_short | HIIT produces increases in muscle power and free testosterone in male masters athletes |
| title_sort | hiit produces increases in muscle power and free testosterone in male masters athletes |
| topic | cortisol HIIT power steroid testosterone |
| url | http://www.endocrineconnections.com/content/6/7/430.full |
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