The purpose of this study is to determine if physical exercise reduces the adverse changes in adipose tissue metabolism and insulin sensitivity that occurs in women during the menopausal transition.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
43
After the baseline studies, the women will perform Spinning three times a week. Two of the sessions are performed on our location by trained instructors and the third training is self-training in a local fitness center where we provide free membership. All trainings are heart rate monitored.
Department og Biomedical Sciences
Copenhagen N, Denmark
Insulin stimulated uptake of glucose in adipose tissue
Measured by Positron Emission Tomography-Computed tomography (PET/CT)
Time frame: Baseline and 3 months
Hyperinsulinemic euglycemic clamp
Glucose metabolized (mg/kg/min)
Time frame: Baseline and 3 months
Adipose tissue distribution
Accessed by Magnetic Resonance Imaging (MRI).
Time frame: Baseline and 3 months
Central insulin sensitivity
Fasting plasma insulin, homeostasis model assessment insulin resistance and measures of central insulin sensitivity derived from an oral glucose tolerance test
Time frame: Baseline and 3 months
Maximal oxygen uptake (ml/O2/kg/min)
Measured using indirect calorimetry and an incremental bicycle protocol
Time frame: Baseline and 3 months
Metabolic syndrome
As measured by high density lipoprotein, triglycerides, waist circumference, blood pressure, mean arterial pressure, fasting glucose and composite metabolic syndrome scores
Time frame: Baseline and 3 months
Health related quality of life
Measured using questionaries, semi-structured interviews and observations
Time frame: Baseline and 3 months
Anthropometry
Measured using dual x-ray absorptiometry, height, weight, waist and hip circumference, sagittal abdominal height
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Time frame: Baseline and 3 months
Skeletal muscle biopsy
Biochemical, proteomics, metabolomics, genomics and morphological analyses
Time frame: Baseline and 3 months
Abdominal subcutaneous adipose tissue biopsy
Biochemical, proteomics, metabolomics, genomics and morphological analyses
Time frame: Baseline and 3 months
Resting metabolic rate
Will be measured by indirect calorimetry
Time frame: Baseline and 3 months
Physical activity level and duration of sleep
Daily activity and duration of sleep will be recorded during one week using Actibelt® and self reporting
Time frame: Baseline and 3 months
Microdialysis
Adipose tissue microdialysis
Time frame: Baseline and 3 months
Femoral subcutaneous adipose tissue biopsy
Biochemical, proteomics, metabolomics, genomics and morphological analyses
Time frame: Baseline and 3 months