Effects of intermittent training on anaerobic performance and MCT transporters in athletes.
This study examined the effects of intermittent hypoxic training (IHT) on skeletal muscle monocarboxylate lactate transporter (MCT) expression and anaerobic performance in trained athletes. Cyclists were assigned to two interventions, either normoxic (N; n = 8; 150 mmHg PIO2) or hypoxic (H; n = 10;...
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Public Library of Science (PLoS)
2014-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0095092&type=printable |
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| author | Grégoire Millet David J Bentley Belle Roels Lars R Mc Naughton Jacques Mercier David Cameron-Smith |
| author_facet | Grégoire Millet David J Bentley Belle Roels Lars R Mc Naughton Jacques Mercier David Cameron-Smith |
| author_sort | Grégoire Millet |
| collection | DOAJ |
| description | This study examined the effects of intermittent hypoxic training (IHT) on skeletal muscle monocarboxylate lactate transporter (MCT) expression and anaerobic performance in trained athletes. Cyclists were assigned to two interventions, either normoxic (N; n = 8; 150 mmHg PIO2) or hypoxic (H; n = 10; ∼3000 m, 100 mmHg PIO2) over a three week training (5×1 h-1h30 x week(-1)) period. Prior to and after training, an incremental exercise test to exhaustion (EXT) was performed in normoxia together with a 2 min time trial (TT). Biopsy samples from the vastus lateralis were analyzed for MCT1 and MCT4 using immuno-blotting techniques. The peak power output (PPO) increased (p<0.05) after training (7.2% and 6.6% for N and H, respectively), but VO2max showed no significant change. The average power output in the TT improved significantly (7.3% and 6.4% for N and H, respectively). No differences were found in MCT1 and MCT4 protein content, before and after the training in either the N or H group. These results indicate there are no additional benefits of IHT when compared to similar normoxic training. Hence, the addition of the hypoxic stimulus on anaerobic performance or MCT expression after a three-week training period is ineffective. |
| format | Article |
| id | doaj-art-03c85837f2634f9bb4ecf0cef1e75b2c |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
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| series | PLoS ONE |
| spelling | doaj-art-03c85837f2634f9bb4ecf0cef1e75b2c2025-08-20T02:14:42ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0195e9509210.1371/journal.pone.0095092Effects of intermittent training on anaerobic performance and MCT transporters in athletes.Grégoire MilletDavid J BentleyBelle RoelsLars R Mc NaughtonJacques MercierDavid Cameron-SmithThis study examined the effects of intermittent hypoxic training (IHT) on skeletal muscle monocarboxylate lactate transporter (MCT) expression and anaerobic performance in trained athletes. Cyclists were assigned to two interventions, either normoxic (N; n = 8; 150 mmHg PIO2) or hypoxic (H; n = 10; ∼3000 m, 100 mmHg PIO2) over a three week training (5×1 h-1h30 x week(-1)) period. Prior to and after training, an incremental exercise test to exhaustion (EXT) was performed in normoxia together with a 2 min time trial (TT). Biopsy samples from the vastus lateralis were analyzed for MCT1 and MCT4 using immuno-blotting techniques. The peak power output (PPO) increased (p<0.05) after training (7.2% and 6.6% for N and H, respectively), but VO2max showed no significant change. The average power output in the TT improved significantly (7.3% and 6.4% for N and H, respectively). No differences were found in MCT1 and MCT4 protein content, before and after the training in either the N or H group. These results indicate there are no additional benefits of IHT when compared to similar normoxic training. Hence, the addition of the hypoxic stimulus on anaerobic performance or MCT expression after a three-week training period is ineffective.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0095092&type=printable |
| spellingShingle | Grégoire Millet David J Bentley Belle Roels Lars R Mc Naughton Jacques Mercier David Cameron-Smith Effects of intermittent training on anaerobic performance and MCT transporters in athletes. PLoS ONE |
| title | Effects of intermittent training on anaerobic performance and MCT transporters in athletes. |
| title_full | Effects of intermittent training on anaerobic performance and MCT transporters in athletes. |
| title_fullStr | Effects of intermittent training on anaerobic performance and MCT transporters in athletes. |
| title_full_unstemmed | Effects of intermittent training on anaerobic performance and MCT transporters in athletes. |
| title_short | Effects of intermittent training on anaerobic performance and MCT transporters in athletes. |
| title_sort | effects of intermittent training on anaerobic performance and mct transporters in athletes |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0095092&type=printable |
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