1 Department of Sports, Recreation and Exercise Science, Faculty of Community and Health Sciences, University of the Western Cape, Cape Town, South Africa.
2 Department of Health Science, University of Applied Sciences FH Campus Wien Vienna, Austria.
3 Department of Medicine, Faculty of Health Sciences, Division of Diabetic Medicine and Endocrinology, University of Cape Town, Cape Town, South Africa.
4 Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.