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CURRENT ISSUETHE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

A Journal on Applied Physiology, Biomechanics, Preventive Medicine,
Sports Medicine and Traumatology, Sports Psychology

Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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Frequency: Monthly

ISSN 0022-4707

Online ISSN 1827-1928

 

The Journal of Sports Medicine and Physical Fitness 1999 June;39(2):133-9

    ORIGINAL ARTICLES

Muscle ­enzyme ­release ­does not pre­dict mus­cle func­tion impair­ment ­after tri­ath­lon

Margaritis I., Tessier F., Verdera F., Bermon S., Marconnet P.

Laboratoire de Physiologie de l’Activité Musculaire, Faculté des Sciences du Sport, Université de Nice Sophia-Antipolis, Nice, France

Background. We ­sought to deter­mine the ­effects of a ­long dis­tance tri­ath­lon (4 km ­swim, 120 km ­bike-­ride, and 30 km run) on the ­four-day kinet­ics of the bio­chem­i­cal mark­ers of mus­cle dam­age, and wheth­er ­they ­were quan­ti­ta­tive­ly ­linked ­with mus­cle func­tion impair­ment and sore­ness.
Methods. Experimental ­design: Data ­were col­lect­ed ­from 2 ­days ­before ­until 4 ­days ­after the com­ple­tion of the ­race. Participants: Twelve tri­ath­letes per­formed the tri­ath­lon and ­five did not. Measures: Maximal vol­un­tary con­trac­tion (MVC), mus­cle sore­ness (­DOMS) and ­total ser­um CK, CK-MB, LDH, AST and ALT activ­ities ­were ­assessed.
Results. Significant chang­es ­after tri­ath­lon com­ple­tion ­were ­found for all mus­cle dam­age indi­rect mark­ers ­over ­time (p<0.0001). MVC of the ­knee exten­sor and flex­or mus­cles ­decreased ­over ­time (p<0.05). There is dis­par­ity in the ­time ­point at ­which ­peak val­ues ­where ­reached for ­DOMS, MVC and ­enzyme leak­age. There is no cor­re­la­tion ­between ser­um ­enzyme leak­age, ­DOMS and MVC impair­ment ­which ­occur ­after tri­ath­lon.
Conclusions. Long dis­tance tri­ath­lon ­race ­caused mus­cle dam­age, but ­extent, as ­well as mus­cle recov­ery can­not be eval­u­at­ed by the mag­ni­tude of chang­es in ser­um ­enzyme activ­ities. Muscle ­enzyme ­release can­not be ­used to pre­dict the mag­ni­tude of the mus­cle func­tion impair­ment ­caused by mus­cle dam­age.

language: English


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