The primary aim of this trial is to investigate adipose tissue function in women with and without polycystic ovary syndrome (PCOS). PCOS is a common endocrine disorder in young women. The pathogenesis behind PCOS is complex and only partly understood, and deeper mechanistic insight is needed. Insulin resistance is a central feature of PCOS, and recent studies have suggested that this is linked to aberrant adipose tissue function. Exercise training has been found to improve the symptoms in PCOS, but we need more knowledge about why. While processes involved in skeletal muscle oxidative remodeling are well described, it is to a large extent unknown whether the oxidative capacity of human adipose tissue is modified by endurance training. The women included in this study will be matched (for body mass index, body weight, and age) to participants in another study. This will enable the investigators to do a comparison between cases (women with PCOS) and controls (women without PCOS) at baseline, and to assess the responses to exercise training in adipose tissue.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
15
Treadmill running/walking with 10 minutes warm-up at 60-70% of maximum heart rate, 4x4 minute intervals at 90-95% of maximum heart rate separated by 3-minutes active pauses at 60-70% of maximum heart rate, and 3 minutes cool-down.
Treadmill running/walking with 10 minutes warm-up at 60-70% of maximum heart rate, ten 1-minute intervals at maximal intensity (that can be performed for one minute), separated by 1-minutes active pauses at 60-70% of maximum heart rate, and 3 minutes cool-down.
Centre of Exercise and Nutrition, Mary MacKillop Institute for Health Research, AUC
Melbourne, Australia
Department of circulation and medical imaging , NTNU
Trondheim, Norway
mitochondrial oxidative phosphorylation capacity
assessed with high resolution respirometry
Time frame: 16 weeks
production of reactive oxygen species
assessed with high resolution respirometry
Time frame: 16 weeks
Adipokine secretion
Time frame: 16 weeks
lipid droplet size in adipocytes
Time frame: 16 weeks
Whole-body fat oxydation rate
Time frame: 16 weeks
Insulin sensitivity
2h oral glucose tolerance test (OGGT)
Time frame: 16 weeks
Whole-body peak oxygen uptake
Time frame: 16 weeks
Adipokine gene expression
Time frame: 16 weeks
Total protein abundance in adipose tissue
quantified using standard Western Blot method
Time frame: 16 weeks
"blood markers of cardiometabolic health"
Time frame: 16 weeks
Body composition
assessed by impedance scale (InBody)
Time frame: 16 weeks
blood pressure
Time frame: 16 weeks
endothelial function
measured by flow-mediated dilatation of the brachial artery
Time frame: 16 weeks
Intima media thickness
measured by ultrasound
Time frame: 16 weeks
Total cholesterol in blood
Time frame: 16 weeks
HDL cholesterol in blood
Time frame: 16 weeks
LDL cholesterol in blood
Time frame: 16 weeks
blood glucose
Time frame: 16 weeks
blood insulin
Time frame: 16 weeks
Glycosylated Hemoglobin (HbA1c) in blood
Time frame: 16 weeks
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