Core temperature and percentage of dehydration in professional football linemen and backs during preseason practices [corrected] [published erratum appears in J ATHLETIC TRAIN 2007 Jul-Sep 42(3):440].
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| Title: | Core temperature and percentage of dehydration in professional football linemen and backs during preseason practices [corrected] [published erratum appears in J ATHLETIC TRAIN 2007 Jul-Sep 42(3):440]. |
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| Authors: | Godek SF (AUTHOR), Bartolozzi AR (AUTHOR), Burkholder R (AUTHOR), Sugarman E (AUTHOR), Dorshimer G (AUTHOR) |
| Source: | Journal of Athletic Training (National Athletic Trainers' Association). Jan-Mar2006, Vol. 41 Issue 1, p8-17. 10p. |
| Abstract: | Context: Thermal responses of average-sized male subjects (mass of approximately 70 kg) may not accurately reflect the rate of heat storage in larger athletes with greater muscle mass.Objective: To determine if core temperature (T(c)) is different in National Football League linemen and backs and if T(c) is related to percentage of dehydration or sweat rate.Design: We measured T(c) and sweat rate in professional football players during preseason twice-daily practices.Setting: Preseason training camp.Patients or Other Participants: Eight linemen (age = 26.6 +/- 2.1 years, height = 191.8 +/- 4.5 cm, mass = 134.8 +/- 10.7 kg, body surface area = 2.61 +/- 0.12 m(2)) and 6 backs (age = 27.0 +/- 4.2 years, height = 185.0 +/- 6.3 cm, mass = 95.6 +/- 11.1 kg, body surface area = 2.19 +/- 0.16 m(2)).Main Outcome Measure(s): We measured T(c) using ingestible sensors. Resting T(c) was recorded in the mornings of data collection with players dressed in shorts and then every 15 minutes during 2-hour practices in full pads or shells. Mass was recorded before and after practices for determining the percentage of dehydration. In 8 of the 14 subjects (4 linemen, 4 backs), sweat rate was calculated using the change in mass adjusted for fluid intake and urine production.Results: Height, mass, and body surface area were greater in linemen than in backs. We noted a linear trend over time for T(c) in both groups. Maximal T(c) was higher in linemen (38.65 +/- 0.48 degrees C) than in backs (38.44 +/- 0.32 degrees C), but linemen were less dehydrated than backs (-0.94 +/- 0.6% versus - 1.3 +/- 0.7%). Sweat rate was 2.11 +/- 0.77 L/h and correlated significantly with body surface area (r = 0.77, P < .05). Maximal T(c) was not correlated with either percentage of dehydration or sweat rate.Conclusions: Maximal T(c) was not associated with percentage of dehydration or sweat rate. Linemen were less dehydrated but demonstrated higher T(c) than backs during practice. Maximal T(c) was generally achieved during live scrimmaging. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Athletic Training (National Athletic Trainers' Association) is the property of National Athletic Trainers' Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| URL: | 20713927 |
| Database: | Teacher Reference Center |
| FullText | Text: Availability: 0 |
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| Header | DbId: trh DbLabel: Teacher Reference Center An: 106460329 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Core temperature and percentage of dehydration in professional football linemen and backs during preseason practices [corrected] [published erratum appears in J ATHLETIC TRAIN 2007 Jul-Sep 42(3):440]. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Godek+SF%22">Godek SF</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bartolozzi+AR%22">Bartolozzi AR</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burkholder+R%22">Burkholder R</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sugarman+E%22">Sugarman E</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dorshimer+G%22">Dorshimer G</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Athletic+Training+%28National+Athletic+Trainers'+Association%29%22">Journal of Athletic Training (National Athletic Trainers' Association)</searchLink>. Jan-Mar2006, Vol. 41 Issue 1, p8-17. 10p. – Name: Abstract Label: Abstract Group: Ab Data: Context: Thermal responses of average-sized male subjects (mass of approximately 70 kg) may not accurately reflect the rate of heat storage in larger athletes with greater muscle mass.Objective: To determine if core temperature (T(c)) is different in National Football League linemen and backs and if T(c) is related to percentage of dehydration or sweat rate.Design: We measured T(c) and sweat rate in professional football players during preseason twice-daily practices.Setting: Preseason training camp.Patients or Other Participants: Eight linemen (age = 26.6 +/- 2.1 years, height = 191.8 +/- 4.5 cm, mass = 134.8 +/- 10.7 kg, body surface area = 2.61 +/- 0.12 m(2)) and 6 backs (age = 27.0 +/- 4.2 years, height = 185.0 +/- 6.3 cm, mass = 95.6 +/- 11.1 kg, body surface area = 2.19 +/- 0.16 m(2)).Main Outcome Measure(s): We measured T(c) using ingestible sensors. Resting T(c) was recorded in the mornings of data collection with players dressed in shorts and then every 15 minutes during 2-hour practices in full pads or shells. Mass was recorded before and after practices for determining the percentage of dehydration. In 8 of the 14 subjects (4 linemen, 4 backs), sweat rate was calculated using the change in mass adjusted for fluid intake and urine production.Results: Height, mass, and body surface area were greater in linemen than in backs. We noted a linear trend over time for T(c) in both groups. Maximal T(c) was higher in linemen (38.65 +/- 0.48 degrees C) than in backs (38.44 +/- 0.32 degrees C), but linemen were less dehydrated than backs (-0.94 +/- 0.6% versus - 1.3 +/- 0.7%). Sweat rate was 2.11 +/- 0.77 L/h and correlated significantly with body surface area (r = 0.77, P < .05). Maximal T(c) was not correlated with either percentage of dehydration or sweat rate.Conclusions: Maximal T(c) was not associated with percentage of dehydration or sweat rate. Linemen were less dehydrated but demonstrated higher T(c) than backs during practice. Maximal T(c) was generally achieved during live scrimmaging. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Athletic Training (National Athletic Trainers' Association) is the property of National Athletic Trainers' Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) – Name: URL Label: URL Group: URL Data: <link linkTarget="URL" linkTerm="20713927" linkWindow="_blank">20713927</link> |
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| RecordInfo | BibRecord: BibEntity: Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 8 Titles: – TitleFull: Core temperature and percentage of dehydration in professional football linemen and backs during preseason practices [corrected] [published erratum appears in J ATHLETIC TRAIN 2007 Jul-Sep 42(3):440]. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Godek SF – PersonEntity: Name: NameFull: Bartolozzi AR – PersonEntity: Name: NameFull: Burkholder R – PersonEntity: Name: NameFull: Sugarman E – PersonEntity: Name: NameFull: Dorshimer G IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan-Mar2006 Type: published Y: 2006 Identifiers: – Type: issn-print Value: 10626050 Numbering: – Type: volume Value: 41 – Type: issue Value: 1 Titles: – TitleFull: Journal of Athletic Training (National Athletic Trainers' Association) Type: main |
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