The existing literature examining the effect of female sex hormones across the phases of the menstrual cycle on muscle microdamage and oxygen uptake is limited. The protective role of estrogens against muscle microdamage is supported by findings from some studies; however, it is questioned by others. The aim of the present study was to investigate the effect of eccentric exercise on biomarkers of muscle microdamage and on oxygen uptake during two phases of the menstrual cycle in healthy premenopausal women.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
12
Isokinetic eccentric exercise consisted of 10 min at 40% of maximal voluntary contractions, followed by 2 min maximal intensity muscle effort
Isokinetic eccentric exercise consisted of 10 min at 40% of maximal voluntary contractions, followed by 2 min maximal intensity muscle effort
Department of Physical Educaiton and Sport Science
Dafni, Attica, Greece
Maximal isometric torque
maximal performance during 5 sec isometric knee extensors contraction, assessed pre and 48 h post eccentric exercise
Time frame: From enrollment to the end of the intervention at 2 weeks
Delayed onset muscle soreness
Palpation of the muscle belly, performed pre and 48h post eccentric exercise
Time frame: From enrollment to the end of intervention at 2 weeks
Oxygen consumption
During the isokinetic eccentric exercise, participants were attached to a gas analyser for continuously measuring oxygen consumption.
Time frame: From enrollment to the end of the intervention at 2 weeks
Duration of the isokinetic exercise
The total duration of exercise performed on the isokinetic dynamometer was recorded
Time frame: From enrollment to the end of intervention at 2 weeks
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