This note summarises a published pooled analysis by Millar, Bray, McGowan, MacDonald and McCartney. It is background reading on the research, not a claim about any product.
What the researchers did
The authors combined data from three earlier studies covering 43 adults who were taking medication for high blood pressure at the time. In each study participants trained three days a week for eight weeks at 30 percent of maximal voluntary contraction, and resting blood pressure was measured twice a week throughout. The pooled data were analysed with hierarchical linear modelling, a method that models each participant's trajectory over time.
What they reported
The model described a linear decline in resting blood pressure across the eight weeks, with estimated differences of about 5.7 mmHg systolic and 3 mmHg diastolic by the end of training. Participants who started with higher systolic pressure showed a steeper decline. Participants remained on their prescribed medication throughout.
How to read this
This is a re-analysis of previously collected data from a small number of participants, not a new randomized trial. It describes a training protocol as studied, not any particular device, and it does not tell an individual what to expect.
This is a summary of a published study, provided for general education. It is not medical advice and it is not a claim about any product. The Zona Plus is a handheld isometric exercise device intended for adjunctive use in the maintenance of overall cardiovascular wellness; it is not intended to diagnose, treat, cure or prevent high blood pressure or any disease. Talk with your physician about your blood pressure and before starting any exercise program.
