| Preliminary Evidence of Transient Fatigue and Pacing during Interchanges in Rugby League. | |
| | |
MedLine Citation:
|
PMID: 22902435 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
PURPOSE: This study aimed to quantify changes in heart rate (HR) and movement speeds in interchanged and whole match players during 35 elite rugby league performances. METHODS: Performances were separated in to whole match, interchange bout 1 and interchange bout 2 and further subdivided in to relative match quartiles. Mean percentages of HR rate peak (%HRpeak), total and high intensity running (> 14 km·h-1) metres per minute (m·min-1) were recorded. RESULTS: For whole match players, a decline in high intensity m·min-1 and %HRpeak was observed between successive quartiles (P < 0.05). High intensity m·min-1 during interchange 1 also progressively declined, although initial m·min-1 was higher than whole match (24.2 ± 7.9 m·min-1 c.f. 18.3 ± 4.7 m·min-1, P = 0.018), and %HRpeak did not change over match quartiles (P > 0.05). During interchange 2, there was a decline in high intensity m·min-1 from quartile 1 to 3 (18 ± 4.1 c.f. 13.4 ± 5 m·min-1, P = 0.048) before increasing in quartile 4. Quartile 1 to 2 also showed an increase in %HRpeak (85.2 ± 6.5 c.f. 87.3 ± 4.2%, P = 0.022). CONCLUSIONS: Replacement players adopted a high initial intensity in their first match quartile before a severe decline thereafter. However, in a second bout, lower exercise intensity at the outset enabled a higher physiological exertion for later periods. These findings inform interchange strategy and conditioning for coaches, whilst also providing preliminary evidence of pacing in team sport. |
| | |
Authors:
|
Mark Waldron; Jamie Highton; Matthew Daniels; Craig Twist |
Related Documents
:
|
17312835 - Encrusted cystitis--an unusual cause of recurrent frank haematuria. 18584495 - Threats to life in residential structure fires. 21122265 - The effect of 6-week exercise programme and whole body vibration on strength and qualit... 15997445 - Effect of sacral neuromodulation on the rectum. 6607895 - Effect of left ventricular aneurysmectomy on exercise performance. 977865 - Measurement of plasma prostaglandins during exercise-induced bronchospasm. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-8-15 |
Journal Detail:
|
Title: International journal of sports physiology and performance Volume: - ISSN: 1555-0265 ISO Abbreviation: Int J Sports Physiol Perform Publication Date: 2012 Aug |
Date Detail:
|
Created Date: 2012-8-20 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101276430 Medline TA: Int J Sports Physiol Perform Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
University of Chester, Department of Sports and Exercise Sciences, Chester, and St Helens Rugby League Football Club, St Helens, United Kingdom. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Lipid peroxidation is not the primary mechanism of bilirubin-induced neurologic dysfunction in jaund...
Next Document: FoxOs in neural stem cell fate decision.