Open AccessRelationship between plasma lactate parameters and muscle characteristics in female cyclists
Author(s) -
David J. Bishop,
David G. Jenkins,
Michael T. McEniery,
Michael Carey
Publication year - 2000
Publication title -
medicine and science in sports and exercise
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.703
H-Index - 224
eISSN - 1530-0315
pISSN - 0195-9131
DOI - 10.1097/00005768-200006000-00008
Subject(s) - lactate threshold , zoology , lactate dehydrogenase , chemistry , cycle ergometer , medicine , phosphofructokinase , endocrinology , cycling , fiber type , blood lactate , glycolysis , biology , metabolism , biochemistry , skeletal muscle , heart rate , blood pressure , history , archaeology , enzyme
In a previous study, we showed that when six different plasma lactate parameters (LPs) were compared, the LP determined by the Dmax method was the best predictor of 1-h cycling performance in women. The present study extended these findings to determine whether or not the relationship between the following six LPs and endurance performance could be explained by their relationship with muscle fiber characteristics: 1) lactate threshold (LT; the power output at which plasma lactate concentration begins to increase above the resting level during an incremental exercise test), 2) LT1 (the power output at which plasma lactate increases by 1 mmol x L(-1) or more), 3) LT(D) (the lactate threshold calculated by the Dmax method), 4) LT(MOD) (the lactate threshold calculated by a modified Dmax method), 5) L4 (the power output at which plasma lactate reaches a concentration of 4 mmol x L(-1)), and 6) LT(LOG) (the power output at which plasma lactate concentration begins to increase when the log([La-]) is plotted against the log(power output)).