Affiliations: [a] Exercise and Sports Science Program, The University of
Tulsa, Tulsa, OK, USA | [b] Department Chemistry and Biochemistry, The University of Tulsa, Tulsa, OK, USA
Note: [] Corresponding author: J.F. Caruso, Exercise and Sports Science
Program, The University of Tulsa, 800 S. Tucker Drive, Tulsa, OK 74104, USA.
Tel.: +1 918 631 2924; Fax: +1 918 631 2068; E-mail: john-caruso@utulsa.edu
Abstract: BACKGROUND: Few studies examined lactate, testosterone and
cortisol changes from supramaximal exercise done by women. OBJECTIVE: Assess the impact of repetition type and exercise history/background on
lactate, cortisol and testosterone changes from high-speed workouts done by
women. METHODS: College-age women (11 competitive athletes, 18 novice
athletes) performed two high-speed workouts on an Impulse resistive exercise
machine. Each workout entailed two 60-second sets of either tonic or phasic
repetitions. There were two hormonal (pre- and post-exercise) measurements per
workout. Lactate was measured six times (pre-, and at zero-, five-, ten, 15-
and 20-minutes post-exercise). RESULTS: Mean force showed a main effect
for workout (tonic > phasic). Lactate had a time main effect, as zero-,
five- and ten-minutes post-exercise results were significantly higher than 15-
and 20-minutes post-exercise values as well as pre-exercise data. Cortisol had
a group main effect (competitive > novice). Testosterone results included
a time effect trend (p=0.12) for higher post-exercise values. CONCLUSIONS: Results warrant continued inquiry regarding 1): pre- and
post-workout salivary hormonal assays, and 2): acute testosterone changes from
high-speed supramaximal exercise done by female athletes.
