Traditional aerobic exercises like running, swimming, and cycling have long been champions in the quest to reduce blood pressure. However, recent research challenges this norm, suggesting that uncomplicated isometric exercises, involving muscle contractions without movement, may outperform high-intensity workouts in lowering blood pressure.
The study, published in the British Journal of Sports Medicine, reveals that a mere eight minutes of isometric exercise, done thrice a week, can bring about a substantial decrease in blood pressure. This is particularly good news for individuals finding it challenging to adhere to physical activity guidelines recommending a minimum of 150 minutes of moderate-intensity exercise per week, such as brisk walking or cycling, as reported by The Washington Post.
Engaging in a straightforward isometric routine, like wall sits, can offer a more time-efficient alternative. For instance, performing a wall sit for two minutes followed by a two-minute rest for four repetitions would only take 14 minutes, inclusive of breaks. The study demonstrated that, on average, such a routine lowered systolic blood pressure by 10 mmHg and diastolic pressure by 5 mmHg.
This compelling evidence suggests a need for revised exercise guidelines that extend beyond the conventional recommendation of aerobic exercise for hypertension prevention and treatment. Jamie O’Driscoll, the senior author of the study, emphasizes the inclusivity of any form of exercise for blood pressure reduction. However, for individuals already adhering to exercise guidelines but facing challenges in reducing blood pressure, isometrics can serve as a valuable addition to their routine.
Isometric exercises, like wall sits, achieve blood pressure reduction by temporarily decreasing blood flow to the contracted muscle. Upon releasing the contraction, blood flow increases, triggering signals that prompt blood vessels to relax, minimizing resistance to blood flow and ultimately lowering blood pressure, as explained by O’Driscoll.
The study, encompassing data from 270 clinical trials involving over 15,000 participants, concluded that isometric exercise training, especially for those with high blood pressure, proved to be the most effective workout. This revelation is considered promising by Laura Richardson, a registered clinical exercise physiologist at the University of Michigan, who believes isometric exercises could become a valuable therapeutic tool for individuals with hypertension.
For those curious about trying a wall sit, it involves standing with your back against a flat wall, feet shoulder-width apart, and about two feet from the wall. Slowly slide down the wall until your thighs are parallel to the ground, maintaining a flat back. Adjust the intensity by squatting lower, engaging muscles like quadriceps, glutes, calves, and abdominals. Besides being a time-efficient exercise, wall sits engage multiple muscles, fostering strength, balance, and improved range of motion, according to Richardson.