N. Rugbeer, Demitri Constantinou, and Georgia Torres, “Effect of the 90-second ‘Gear’ exercise programme on cardiometabolic risk factors in persons with an elevated risk of cardiovascular disease”, SA J Sports Med, vol. 33, no. 1, pp. 1–8, Feb. 2021, doi: 10.17159/2078-516X/2021/v33i1a8894.