Isometric Handgrip Training Frequency and Blood Pressure in People With Hypertension

Participants allocated to the exercise groups will complete 6 weeks of isometric handgrip exercise training (IHGT) using an electronic hand dynamometer (Camry EH101, Zhongshan Camry Electronic Co. Ltd, Guangdong) for either 2 or 4 sessions per week. Each exercise session will consist of 4 x 2-minute isometric contractions at 30% MVC with 1 minute rest periods between contractions. The first bout will be performed on the dominant arm and then the arm will be alternated for each subsequent two-minute bout. Participants will be instructed to try keep the contraction tension as close as possible to the set tension of 30% MVC using visual feedback from the dynamometer's electronic display.