Validity of Core Temperature Measurements at 3 Rectal Depths During Rest, Exercise, Cold-Water Immersion, and Recovery
Miller KC, Hughes LE, Long BC, Adams WM, Casa DJ
Journal of athletic training · 42 citas
Cómo se estudió
- Diseño
- Estudio transversal (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Universidad u hospital
- Central Michigan University
Según 1 financiador declarado.
Publicación
- Publicado
- 2017-02-16 · J Athl Train · vol. 52 · número 4 · págs. 332–338
- Editorial
- National Athletic Trainers' Association
- Citado
- 62 citas · más que el 92% de estudios similares · 3.1× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 39 trabajos
- Acceso
- Lectura gratuita
- Áreas de investigación
- Thermoregulation and physiological responses · Infrared Thermography in Medicine · Thermal Regulation in Medicine
- Palabras clave
- Immersion (mathematics), Core temperature, Rectal temperature, Core (optical fiber), Rest (music), Physical therapy, Physical medicine and rehabilitation, Medicine, Computer science, Mathematics, Anesthesia, Internal medicine
- MeSH
- rectum, humans, heat stroke, fever, water, body temperature, exercise, cross-sectional studies, immersion, rest, female, male, cold temperature, hot temperature, young adult
5 autores
- Kevin Charles Miller🇺🇸Central Michigan University
- Lexie E. Hughes🇺🇸Central Michigan University
- Blaine C. Long🇺🇸Central Michigan University
- William M. Adams🇺🇸University of Connecticut
- Douglas J. Casa🇺🇸University of Connecticut
Resumen
El texto original del estudio, en el idioma en que se publicó.
Context
No evidence-based recommendation exists regarding how far clinicians should insert a rectal thermistor to obtain the most valid estimate of core temperature. Knowing the validity of temperatures at different rectal depths has implications for exertional heat-stroke (EHS) management.
Objective
To determine whether rectal temperature (Trec) taken at 4 cm, 10 cm, or 15 cm from the anal sphincter provides the most valid estimate of core temperature (as determined by esophageal temperature [Teso]) during similar stressors an athlete with EHS may experience.
Design
Cross-sectional study.
Setting
Laboratory.
Patients or other participants
Seventeen individuals (14 men, 3 women: age = 23 ± 2 years, mass = 79.7 ± 12.4 kg, height = 177.8 ± 9.8 cm, body fat = 9.4% ± 4.1%, body surface area = 1.97 ± 0.19 m2).
Intervention(s)
Rectal temperatures taken at 4 cm, 10 cm, and 15 cm from the anal sphincter were compared with Teso during a 10-minute rest period; exercise until the participant's Teso reached 39.5°C; cold-water immersion (∼10°C) until all temperatures were ≤38°C; and a 30-minute postimmersion recovery period. The Teso and Trec were compared every minute during rest and recovery. Because exercise and cooling times varied, we compared temperatures at 10% intervals of total exercise and cooling durations for these periods.
Main outcome measure(s)
The Teso and Trec were used to calculate bias (ie, the difference in temperatures between sites).
Results
Rectal depth affected bias (F2,24 = 6.8, P = .008). Bias at 4 cm (0.85°C ± 0.78°C) was higher than at 15 cm (0.65°C ± 0.68°C, P .05). Bias varied over time (F2,34 = 79.5, P < .001). Bias during rest (0.42°C ± 0.27°C), exercise (0.23°C ± 0.53°C), and recovery (0.65°C ± 0.35°C) was less than during cooling (1.72°C ± 0.65°C, P < .05). Bias during exercise was less than during postimmersion recovery (0.65°C ± 0.35°C, P < .05).
Conclusions
When EHS is suspected, clinicians should insert the flexible rectal thermistor to 15 cm (6 in) because it is the most valid depth. The low level of bias during exercise suggests Trec is valid for diagnosing hyperthermia. Rectal temperature is a better indicator of pelvic organ temperature during cold-water immersion than is Teso.
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