Sweat rate and sodium loss during work in the heat
Significant and poorly documented electrolyte losses result from prolonged sweating. This study aimed to quantify likely sodium losses during work in heat. Male subjects exercised in an environmental chamber on two consecutive days in both winter and summer. Sweat collecting devices were attached to...
| Main Authors: | , |
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| Format: | Journal Article |
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Biomed Central
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/24578 |
| _version_ | 1848751470149632000 |
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| author | Bates, Graham Miller, Veronica |
| author_facet | Bates, Graham Miller, Veronica |
| author_sort | Bates, Graham |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Significant and poorly documented electrolyte losses result from prolonged sweating. This study aimed to quantify likely sodium losses during work in heat. Male subjects exercised in an environmental chamber on two consecutive days in both winter and summer. Sweat collecting devices were attached to the upper arms and legs. Sweat rates were higher and sodium concentrations were lower in the summer (acclimatised) than the winter (unacclimatised) trials. Sweat sodium concentration was reduced on the second day in summer but not winter. Regional differences were found in both seasons. The difference between days in summer probably reflects short-term acclimation. The difference between seasons reflects acclimatisation. The data predict average sodium (Na) losses over a work shift of 4.8-6 g, equivalent to 10-15 g salt (NaCl). Losses are potentially greater in unacclimatised individuals. Fluid and electrolyte losses resulting from prolonged sweating must be replaced to prevent imbalance in body fluids, however guidelines for this replacement are often conflicting. This study provides important information for occupational health practitioners by quantifying the likely sodium losses over a work shift and providing recommendations for replacement. |
| first_indexed | 2025-11-14T07:53:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-24578 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:53:14Z |
| publishDate | 2008 |
| publisher | Biomed Central |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-245782017-09-13T15:51:05Z Sweat rate and sodium loss during work in the heat Bates, Graham Miller, Veronica Electrolyte Nutritional epidemiology Fluids Significant and poorly documented electrolyte losses result from prolonged sweating. This study aimed to quantify likely sodium losses during work in heat. Male subjects exercised in an environmental chamber on two consecutive days in both winter and summer. Sweat collecting devices were attached to the upper arms and legs. Sweat rates were higher and sodium concentrations were lower in the summer (acclimatised) than the winter (unacclimatised) trials. Sweat sodium concentration was reduced on the second day in summer but not winter. Regional differences were found in both seasons. The difference between days in summer probably reflects short-term acclimation. The difference between seasons reflects acclimatisation. The data predict average sodium (Na) losses over a work shift of 4.8-6 g, equivalent to 10-15 g salt (NaCl). Losses are potentially greater in unacclimatised individuals. Fluid and electrolyte losses resulting from prolonged sweating must be replaced to prevent imbalance in body fluids, however guidelines for this replacement are often conflicting. This study provides important information for occupational health practitioners by quantifying the likely sodium losses over a work shift and providing recommendations for replacement. 2008 Journal Article http://hdl.handle.net/20.500.11937/24578 10.1186/1745-6673-3-4 Biomed Central fulltext |
| spellingShingle | Electrolyte Nutritional epidemiology Fluids Bates, Graham Miller, Veronica Sweat rate and sodium loss during work in the heat |
| title | Sweat rate and sodium loss during work in the heat |
| title_full | Sweat rate and sodium loss during work in the heat |
| title_fullStr | Sweat rate and sodium loss during work in the heat |
| title_full_unstemmed | Sweat rate and sodium loss during work in the heat |
| title_short | Sweat rate and sodium loss during work in the heat |
| title_sort | sweat rate and sodium loss during work in the heat |
| topic | Electrolyte Nutritional epidemiology Fluids |
| url | http://hdl.handle.net/20.500.11937/24578 |