Post-exercise cold water immersion: Effect on core temperature and melatonin responses
To study the effect of post-exercise cold water immersion (CWI) on core temperature and melatonin responses, 10 male cyclists completed two evening (~1800 hours) cycling trials followed by a 15-min CWI (14 C) or warm water immersion (WWI; 34 C), and were then monitored for 90 min post-immersion. The...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/20532 |
| _version_ | 1848750331355201536 |
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| author | Robey, E. Dawson, B. Halson, S. Goodman, C. Gregson, W. Eastwood, Peter |
| author_facet | Robey, E. Dawson, B. Halson, S. Goodman, C. Gregson, W. Eastwood, Peter |
| author_sort | Robey, E. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | To study the effect of post-exercise cold water immersion (CWI) on core temperature and melatonin responses, 10 male cyclists completed two evening (~1800 hours) cycling trials followed by a 15-min CWI (14 C) or warm water immersion (WWI; 34 C), and were then monitored for 90 min post-immersion. The exercise trial involved 15 min at 75 % peak power, followed by a 15 min time trial. Core (rectal) temperature was not different between the two conditions pre-exercise (~37.4 C), post-exercise (~39 C) or immediately post-immersion (~37.7 C), but was significantly (p < 0.05) below pre-exercise levels at 60 and 90 min post-immersion in both conditions. Core temperature was significantly lower after CWI than WWI at 30 min (36.84 ± 0.24 vs. 37.42 ± 0.40 C, p < 0.05) and 90 min (36.64 ± 0.24 vs. 36.95 ± 0.43 C, p < 0.05) post-immersion. Salivary melatonin levels significantly increased (p < 0.05) from post-exercise (~5 pM) to 90 min post-immersion (~8.3 pM), but were not different between conditions. At 30 and 90 min post-immersion heart rate was significantly lower (~5-10 bpm, p < 0.01) after CWI than WWI. These results show that undertaking either CWI or WWI post-exercise in the evening lowers core temperature below baseline for at least 90 min; however, the magnitude of decrease is significantly greater following CWI. The usual evening increase in melatonin is unaffected by exercise or post-exercise water immersion undertaken between ~1800 and ~2000 hours. © 2012 Springer-Verlag. |
| first_indexed | 2025-11-14T07:35:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-20532 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:35:08Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-205322017-09-13T13:51:04Z Post-exercise cold water immersion: Effect on core temperature and melatonin responses Robey, E. Dawson, B. Halson, S. Goodman, C. Gregson, W. Eastwood, Peter To study the effect of post-exercise cold water immersion (CWI) on core temperature and melatonin responses, 10 male cyclists completed two evening (~1800 hours) cycling trials followed by a 15-min CWI (14 C) or warm water immersion (WWI; 34 C), and were then monitored for 90 min post-immersion. The exercise trial involved 15 min at 75 % peak power, followed by a 15 min time trial. Core (rectal) temperature was not different between the two conditions pre-exercise (~37.4 C), post-exercise (~39 C) or immediately post-immersion (~37.7 C), but was significantly (p < 0.05) below pre-exercise levels at 60 and 90 min post-immersion in both conditions. Core temperature was significantly lower after CWI than WWI at 30 min (36.84 ± 0.24 vs. 37.42 ± 0.40 C, p < 0.05) and 90 min (36.64 ± 0.24 vs. 36.95 ± 0.43 C, p < 0.05) post-immersion. Salivary melatonin levels significantly increased (p < 0.05) from post-exercise (~5 pM) to 90 min post-immersion (~8.3 pM), but were not different between conditions. At 30 and 90 min post-immersion heart rate was significantly lower (~5-10 bpm, p < 0.01) after CWI than WWI. These results show that undertaking either CWI or WWI post-exercise in the evening lowers core temperature below baseline for at least 90 min; however, the magnitude of decrease is significantly greater following CWI. The usual evening increase in melatonin is unaffected by exercise or post-exercise water immersion undertaken between ~1800 and ~2000 hours. © 2012 Springer-Verlag. 2013 Journal Article http://hdl.handle.net/20.500.11937/20532 10.1007/s00421-012-2436-3 restricted |
| spellingShingle | Robey, E. Dawson, B. Halson, S. Goodman, C. Gregson, W. Eastwood, Peter Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title | Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title_full | Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title_fullStr | Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title_full_unstemmed | Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title_short | Post-exercise cold water immersion: Effect on core temperature and melatonin responses |
| title_sort | post-exercise cold water immersion: effect on core temperature and melatonin responses |
| url | http://hdl.handle.net/20.500.11937/20532 |