Lakehead University Library Logo
    • Login
    View Item 
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Retrospective theses
    • View Item
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Retrospective theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    quick search

    Browse

    All of Knowledge CommonsCommunities & CollectionsBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee MemberThis CollectionBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee Member

    My Account

    Login

    Statistics

    View Usage Statistics

    The relationship between whole blood, plasma and total blood lactate at various exercise intensities

    Thumbnail

    View/Open

    NewhouseD1992m-1b.pdf (3.022Mb)

    Date

    1992

    Author

    Newhouse, Donna

    Degree

    Master of Science

    Discipline

    Kinesiology

    Subject

    Glycolysis
    Factors affecting blood lactate
    Acid-base balance
    Plasma volume
    Whole blood and plasma lactate discrepancies
    Mechanisms for cell to plasma lactate gradients

    Metadata

    Show full item record

    Abstract

    The purpose of this study was to examine the relationship between lactate concentrations derived from three sources: whole blood (WBLa), plasma (Pla) and total blood (TBLa) during an incremental bicycle test to exhaustion. Regression equations were computed enabling the prediction of one source from another. Thirty-two male subjects (16-25 yrs) participated in this study. Subjects performed a graded bicycle ergometer exercise test to exhaustion. Consecutive blood samples were drawn via an indwelling venous catheter at two minute intervals throughout the test, immediately post, and 5 minutes post exercise. Blood was analyzed for: WBLa, Pla, TBLa (YSI Lactate Analyser Model 23L), hemoglobin, hematocrit, bicarbonate and pH. Correlations were calculated for all variables. Simple and multiple regression equations were computed across exercise intensities. A one-way ANOVA was performed to determine if any significant differences existed between these three indices. This study illustrated that WBLa, Pla and TBLa concentrations, differed significantly and as exercise intensity increased so did the discrepancy. The regression equations were PLa=1.568(WBLa) + 0.149; WBLa=0.887(TBLa) + 0.015; PLa=1.208(TBLa) + 0.093. Although highly correlated to lactate values, the predictor variables: hemoglobin, hematocrit, bicarbonate and pH did not enhance the prediction equation.

    URI

    http://knowledgecommons.lakeheadu.ca/handle/2453/1757

    Collections

    • Retrospective theses

    Lakehead University Library
    Contact Us | Send Feedback

     


    Lakehead University Library
    Contact Us | Send Feedback