Abstract

Fifteen competitive cyclists and 15 subjects not involved in competitive cycling were studied to determine the relationship between V02max, lactate threshold (LT), fixed blood lactate concentrations, body composition parameters, and maximal effort bicycle ergometer performance. The subjects were assessed for V02max, LT, VO2LT, and V02 associated with blood lactate concentrations of 3, 4, 5, and 6 mM/l, using in incremental protocol on the ergometer. Subjects also completed two 10-min drop-off performance tests (starting at 70 rpm) at the same absolute power output (ABS) and at the same relative power output completed for 3 min on the V02max Test) (REL). The results indicated that the competitive cyclists had higher V02max; V02LT; V02 3 mM, V02 4 mM, V02 5mM, V02 6mM, V02LT/V02max; max resistance; and resistance at LT as copmpared to the noncompetitive subjects. Correlational analysis revealed poor prediction between metabolic measures and the homogeneous cumulative rpm scores during the REL test. It was concluded that V02max, VO2LT, and V02 3 mM through V02 6 mM are good predictors of work output using a drop-off performance model. It was further concluded that in competitive cyclists factors other than V02 values may be important for prediction of performance. Verf.-Referat