| A heat acclimation protocol for team sports. | |
| | |
MedLine Citation:
|
PMID: 18460609 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: It is well documented that heat acclimation of six or more sessions of at least 60 min duration prolongs the time to exhaustion during endurance walking, cycling and running in the heat. However, this type of acclimation is not specific to team sport activity and the effect of acclimation on prolonged high-intensity intermittent running has not yet been investigated. OBJECTIVE: To assess the impact of an intermittent acclimation protocol on distance run during team sport activity. METHODS: The impact of four short heat acclimation sessions (30-45 min of the Loughborough Intermittent Shuttle Test; LIST) on high-intensity intermittent running capacity (LIST) in the heat (30 degrees C, 27% relative humidity (RH)), was examined. Seventeen female well-trained games players were split into three groups: an acclimation group (30 degrees C, 24% RH), a moderate training group (18 degrees C, 41% RH) and a control group who did not complete any training between the main trials (pre-acclimation and post-acclimation). The pre-acclimation (A) and post-acclimation (B) trials were separated by 28 days to control for menstrual phase and verified using hormonal analysis. The four acclimation or moderate training sessions utilising the LIST were completed with one or two rest days interspersed between each session in a 10-day period prior to the post-acclimation trial (B). RESULTS: In the post-acclimation trial distance run was increased by 33% in the acclimation group (A: 7703 (SEM 1401) m vs B: 10215 (SEM 1746) m; interaction group x trial p<0.05), but was unchanged in the moderate and control groups. The acclimation group had a lower rectal temperature (interaction group x trial x time p<0.01) due to a lower rate of rise, and an increase in thermal comfort1 after acclimation (End A: 7 (SEM 2) vs 6 (SEM 2); interaction group x trial p<0.01). There was no difference in serum progesterone, aldosterone or cortisol concentrations following acclimation or between groups. CONCLUSION: Four 30-45 min sessions of intermittent exercise induced acclimation, and resulted in an improvement in intermittent running exercise capacity in female games players. A lower rectal temperature and a concomitant rise in thermal comfort may be partly responsible for the improvement in exercise capacity. |
| | |
Authors:
|
C Sunderland; J G Morris; M E Nevill |
Related Documents
:
|
3874709 - The use of physical agents in rehabilitation of athletic injuries. 2888649 - Isoproterenol sensitivity in heat tolerant and relatively heat intolerant men. 8900989 - Exertional heat illness in marine corps recruit training. 17918699 - Ultrasound heating is curvilinear in nature and varies between transducers from the sam... 8933099 - Sweating rate and sweat composition during exercise and recovery in ambient heat and hu... 14622709 - The heat/capsaicin sensitization model: a methodologic study. 9617729 - The relationship between open and closed kinetic chain strength of the lower limb and j... 12730519 - Fatigue in systemic lupus erythematosus: a randomized controlled trial of exercise. 23242399 - Health-enhancing physical activity programme (hepap) for transient ischaemic attack and... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: British journal of sports medicine Volume: 42 ISSN: 1473-0480 ISO Abbreviation: Br J Sports Med Publication Date: 2008 May |
Date Detail:
|
Created Date: 2008-05-07 Completed Date: 2008-06-16 Revised Date: 2010-10-12 |
Medline Journal Info:
|
Nlm Unique ID: 0432520 Medline TA: Br J Sports Med Country: England |
Other Details:
|
Languages: eng Pagination: 327-33 Citation Subset: IM |
Affiliation:
|
School of Biomedical and Natural Sciences, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK. caroline.sunderland@ntu.ac.uk |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acclimatization
/
physiology* Body Temperature / physiology Case-Control Studies Drinking / physiology Female Heart Rate / physiology Hot Temperature* Humans Physical Endurance / physiology* Running / physiology* Sweating / physiology Temperature Time Factors |
| Comments/Corrections | |
Erratum In:
|
Br J Sports Med. 2009 Oct 1;43(10):764 Br J Sports Med. 2010 Oct;44(13):e6 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Cellular energetic status supervises the synthesis of bis-diphosphoinositol tetrakisphosphate indepe...
Next Document: Quality documentation challenges for veterinary clinical pathology laboratories.