Plowman, Sharon A.
M.S. Ed. (Master of Education)
Department of Physical Education
The purpose of this study was to determine which two physiological variables accounted for the greatest variance in 10 kilometer run time (10 km RT) in a heterogeneous group of adult male runners. Variables examined were maximal oxygen consumption (V̇O[sub 2]max) ; running economy (RE) ; predicted velocity at V̇O[sub 2]max (vV̇O[sub 2]max) ; treadmill velocity at the onset of 4 mM lactic acid (vOBLA); and V̇O[sub 2] at ventilatory threshold (V̇O[sub 2] at VT[sub 2]). Eleven trained and experienced male runners, ages 18-33 years, performed two treadmill tests: (a) four submaximal intensities (215, 230, 248, and 268 m min^(-1)) for six minutes, each separated by five minutes of walking; and (b) 2-4 days following the initial test, an incremental protocol to determine ventilatory threshold and V̇O[sub 2]max. At the end of each run stage of the initial test, measures of blood lactic acid concentration were obtained. Results of multiple regression analysis indicated that two pairs of variables, V̇O[sub 2]max and RE, and V̇O[sub 2]max and vV̇O[sub 2]max, both accounted for 81% of the variance in 10 km RT with SEE's of 1.06 and 1.07 min, respectively. The results of this study indicate that V̇O[sub 2]max is the most important variable in accounting for 10 km RT (65%), while both RE and vV̇O[sub 2]max increased the ability to account for run performance by an additional 16% in this sample.
Bird, Jeffrey B., "The contribution of selected physiological variables to 10 kilometer run time in trained, heterogeneous adult male runners" (1991). Graduate Research Theses & Dissertations. 5376.
Northern Illinois University
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