The impact of natural menstrual cycle and oral contraceptive pill phase on substrate oxidation during rest and acute submaximal aerobic exercise
Jennifer S. Williams, Jenna C. Stone, Zaryan Masood, William Bostad, Martin J. Gibala, Maureen J. MacDonald
Abstract
This study was the first to examine the influence of NAT and two generations of OCPs on substrate oxidation during rest and acute submaximal aerobic exercise. We reported no differences across cycle phases or groups on RER, and minimal impact on carbohydrate or lipid oxidation apart from an increase in carbohydrate oxidation in NAT compared with OCP2 during exercise. Based on these findings, NAT/OCP phase controls may not be necessary in studies investigating substrate oxidation.
Topics & Concepts
Respiratory exchange ratioInternal medicineMenstrual cycleEndocrinologySupine positionMedicineVO2 maxFollicular phaseAerobic exercisePillPhysiologyHormoneHeart ratePharmacologyBlood pressureMuscle metabolism and nutritionCardiovascular and exercise physiologyExercise and Physiological Responses