This study evaluated the effect of body adiposity on core cooling rates, as measured by decreases in rectal (T (re)), esophageal (T (es)) and aural canal (T (ac)) temperatures, of individuals rendered hyperthermic by dynamic exercise in the heat. Seventeen male participants were divided into two groups; low body fat (LF, 12.9 +/- 1.9%) and high body fat (HF, 22.3 +/- 4.3%). Participants exercised at 65% of their maximal oxygen uptake at an ambient air temperature of 40 degrees C until T (re) increased to 40 degrees C or until volitional fatigue. Following exercise, participants were immersed up to the clavicles in an 8 degrees C circulated water bath until T (re) returned to 37.5 degrees C. No significant differences were found between the LF and HF in the time to reach a T (re) of 39.5 degrees C (P = 0.205), 38.5 degrees C (P = 0.343) and 37.5 degrees C (P = 0.923) during the immersion. Overall cooling rate for T (re) was also similar between groups (0.23 +/- 0.09 degrees C/min (LF) vs. 0.20 +/- 0.09 degrees C/min (HF), P = 0.647) as well as those for T (es) (P = 0.502) and T (ac) (P = 0.940). Furthermore, mean rate of non-evaporative heat loss (702 +/- 217 W/m(2) (LF) vs. 612 +/- 141 W/m(2) (HF), P = 0.239) was not different between groups. These results suggest that a difference of approximately 10% of body adiposity does not affect core cooling rates in active individuals under 25% body fat rendered hyperthermic by exercise.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00421-008-0780-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Postoperative pancreatic fistula risk assessment using digital pathology based analyses at the parenchymal resection margin of the pancreas - Results from the randomized multicenter RECOPANC trial.
HPB (Oxford)
December 2024
Institute for Surgical Pathology, Medical Center - University of Freiburg, Germany; Core Facility for Histopathology and Digital Pathology, University of Freiburg, Germany; Faculty of Medicine, University of Freiburg, Germany. Electronic address:
Background: In pancreatic surgery Postoperative pancreatic fistula (POPF) represents the most dreaded complication, for which pancreatic texture is acknowledged as one of the strongest predictors. No consensual objective reference has been defined to evaluate the pancreas composition. The presented study aimed to mine histology data of the pancreatic tissue composition with AI assist and correlate it with clinic-pathological parameters derived from the RECOPANC study.
View Article and Find Full Text PDFVisceral fat distribution: Interracial studies.
Adv Clin Chem
January 2025
Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, China. Electronic address:
Visceral adipose tissue, a type of abdominal adipose tissue, is highly involved in lipolysis. Because increased visceral adiposity is strongly associated with the metabolic complications related with obesity, such as type 2 diabetes and cardiovascular disease, there is a need for precise, targeted, personalized and site-specific measures clinically. Existing studies showed that ectopic fat accumulation may be characterized differently among different populations due to complex genetic architecture and non-genetic or epigenetic components, ie, Asians have more and Africans have less visceral fat vs Europeans.
View Article and Find Full Text PDFQuantification of heavy metal exposure in a British population cohort links total mercury levels in plasma with skin tissue-specific changes in mitochondrial-related gene expression.
Sci Total Environ
January 2025
Department of Twin Research and Genetic Epidemiology, King's College London, 3-4th Floor South Wing Block D, St Thomas' Hospital, Westminster Bridge Road, London SE1 7EH, UK. Electronic address:
Heavy metals in our direct environment have profound effects on human health and while some are essential for life, others can be toxic. In vivo studies often focus on clinical features caused by overexposure to, or by deprivation of a heavy metal. However, to understand the cellular impact of heavy metals on health, studies in healthy volunteers before symptom onset are needed.
View Article and Find Full Text PDFProtocol for inducing beige adipocytes in white adipose tissue of mouse using cold exposure and CL316,243 injection.
STAR Protoc
January 2025
School of Biomedical Sciences, Heart and Vascular Institute, The Chinese University of Hong Kong, Hong Kong SAR, China. Electronic address:
White adipose tissue (WAT) beiging holds significant therapeutic potential for combating obesity. Here, we present a protocol for inducing beige WAT in mice using both cold exposure and CL316,243 treatment. We describe steps for intraperitoneal injection, and subcutaneous WAT (sWAT) isolation, dissection, and fixation.
View Article and Find Full Text PDFBody Composition at Diagnosis and Early Response in Pediatric Hodgkin Lymphoma.
Cancer Epidemiol Biomarkers Prev
January 2025
University of Alabama at Birmingham, Birmingham, AL, United States.
Background: The association between skeletal muscle and adipose tissue (body composition) and early response using positron emission tomography (PET) in pediatric Hodgkin lymphoma (HL) remains unstudied.
Methods: Patients enrolled on Children's Oncology Group studies AHOD0031 (intermediate-risk HL) and AHOD0831 (high-risk HL) with digital abdominal computed tomography (CT) scans at diagnosis and PET scans after 2 cycles (PET2) were included. Two consecutive slices at the third lumbar vertebra were identified and skeletal muscle index (SMI, in cm2/m2) and total adipose tissue index (TATI, in cm2/m2) were calculated using sliceOmatic (Magog, Canada) and height at diagnosis.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!