Clients with very high blood pressure should avoid resistance training above what percentage of their 1RM?

For clients with very high blood pressure, it is advised that they avoid resistance training above 70% of their one-repetition maximum (1RM) due to the increased cardiovascular strain and risk of hypertensive episodes that can occur at higher intensities. Training at or above this level can lead to a spike in blood pressure, which poses significant health risks for individuals who already have elevated levels.

Resistance training at intensities higher than 70% of 1RM can increase intrathoracic pressure and lead to the Valsalva maneuver, which further elevates blood pressure. Thus, keeping the resistance lower helps to manage blood pressure levels safely while still allowing for strength training benefits. Emphasizing lower intensity, higher repetition workouts can help improve overall fitness without causing undue stress on the cardiovascular system for these clients.