Intragame Blood-Lactate Values During Ice Hockey and Their Relationships to Commonly Used Hockey Testing Protocols.
Summary of "Intragame Blood-Lactate Values During Ice Hockey and Their Relationships to Commonly Used Hockey Testing Protocols."
Noonan, BC. Intragame blood-lactate values during ice hockey and their relationships to commonly used hockey testing protocols. J Strength Cond Res 24(X): 000-000, 2010-This study evaluated the on ice blood-lactate values during a division 1 ice hockey game in an attempt to demonstrate the highly variable nature of the game. Our hypothesis was that intragame blood-lactate (BLa) values would be highly variable and related to shift length. Six men (age = 20.4 + 1.8 years, body mass 81.3 +8.7 kg) agreed to have fingerstick BLa samples taken at the completion of selected shifts (n = 35 samples) during the first and third periods of a division 1 ice hockey game. Shift length including work and rest intervals were also recorded for each of these shifts. Blood-lactate values ranged from 4.4 to 13.7 mmol.L with a mean value of 8.15 (+2.72) mmol.L. Shift length ranged from 55 to 145 seconds with individual work intervals within the shifts ranging from 29 to 102 seconds in length. Most shifts had either 1 or no play stoppages and rest to work intervals ranged from 0-1.66 (+0.53). These results further support the intense and variable nature of ice hockey and should help coaches develop more specific training and testing regimens to prepare for these demands. They also highlight the need for a validated and reliable test of repeated sprint ability for ice hockey players.
Affiliation
Department of Orthopaedics, Yale New Haven Hospital, Guilford, Connecticut.
Journal Details
This article was published in the following journal.
Name: Journal of strength and conditioning research / National Strength & Conditioning Association
ISSN: 1533-4287
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20683352
- DOI: http://dx.doi.org/10.1519/JSC.0b013e3181e99c4a
Medical and Biotech [MESH] Definitions
Hockey
A game in which two parties of players provided with curved or hooked sticks seek to drive a ball or puck through opposite goals. This applies to either ice hockey or field hockey.
L-lactate Dehydrogenase (cytochrome)
A cytochrome form of lactate dehydrogenase found in the MITOCHONDRIA. It catalyzes the oxidation of L-lactate to PYRUVATE with transfer of electrons to CYTOCHROME C. The enzyme utilizes FMN and PROTOHEME IX as cofactors.
L-lactate Dehydrogenase
A tetrameric enzyme that, along with the coenzyme NAD+, catalyzes the interconversion of LACTATE and PYRUVATE. In vertebrates, genes for three different subunits (LDH-A, LDH-B and LDH-C) exist.
Statistical Distributions
The complete summaries of the frequencies of the values or categories of a measurement made on a group of items, a population, or other collection of data. The distribution tells either how many or what proportion of the group was found to have each value (or each range of values) out of all the possible values that the quantitative measure can have.
Lactate Dehydrogenase-elevating Virus
A species ARTERIVIRUS, occurring in a number of transplantable mouse tumors. Infected mice have permanently elevated serum levels of lactate dehydrogenase.
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