Blood Pressure Dynamics & Resistance Training
The blood pressure response during resistance training (weight lifting) is much more exaggerated than with aerobic type activities, such as walking. During high intensity resistance training, systolic and diastolic blood pressures have been measured as high as 480/350 mmHg respectively with no ill effects.4 This surge in blood pressure is due partially to the fact that muscle contraction under enormous strain causes vasoconstriction within the muscles involved. This increases total peripheral resistance (TPR) substantially. As you will recall, BP is a function of TPR. It should also be noted that the subject is inclined to perform what is known as a Valsalva maneuver during heavy resistance training. This is when a subject under strain will expire against a closed glottis not allowing the air out of the nose or mouth. The healthcare professional should be wary of this maneuver. The Valsalva maneuver may be dangerous, as it increases intrathoracic pressure further exacerbating blood pressure and the workload of the heart. An effective method of avoiding the Valsalva maneuver during resistance training is to have the subject avoid holding her breath by continually breathing. More specifically, during resistance training events the subject should breathe out on effort. For example, if a subject is doing bicep curls, as they curl the weight up they should breathe out and they should breathe in when lowering the weight down.
Blood Pressure Dynamics & Resistance TrainingThe blood pressure response during resistance training (weight lifting) is much more exaggerated than with aerobic type activities, such as walking. During high intensity resistance training, systolic and diastolic blood pressures have been measured as high as 480/350 mmHg respectively with no ill effects.4 This surge in blood pressure is due partially to the fact that muscle contraction under enormous strain causes vasoconstriction within the muscles involved. This increases total peripheral resistance (TPR) substantially. As you will recall, BP is a function of TPR. It should also be noted that the subject is inclined to perform what is known as a Valsalva maneuver during heavy resistance training. This is when a subject under strain will expire against a closed glottis not allowing the air out of the nose or mouth. The healthcare professional should be wary of this maneuver. The Valsalva maneuver may be dangerous, as it increases intrathoracic pressure further exacerbating blood pressure and the workload of the heart. An effective method of avoiding the Valsalva maneuver during resistance training is to have the subject avoid holding her breath by continually breathing. More specifically, during resistance training events the subject should breathe out on effort. For example, if a subject is doing bicep curls, as they curl the weight up they should breathe out and they should breathe in when lowering the weight down.
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