![leg isometric workout leg isometric workout](https://cdn2.stylecraze.com/wp-content/uploads/2013/07/Top-28-Isometric-Exercises-And-Their-Benefits-1.jpg)
However, few studies to date have identified changes in resting vascular dimensions or blood flow after isometric training. also reported elevated nitric oxide (NO) levels following extended exercise training (≥8 weeks) which are thought to mediate vascular remodelling resulting in an increased lumen diameter. These changes have been associated with modified sympathetic nerve activity, increased artery lumen diameter and improved endothelium-dependent vasodilatation. Studies using dynamic exercise to elicit reductions in resting blood pressure have reported concurrent adaptations in both local and/or systemic vasculature that seemingly lowers total peripheral resistance. The mechanism by which the isometric training-induced reduction in resting blood pressure is achieved remains unclear. Taken together, these studies suggest that isometric training intensity might be important in the adaptations seen on the completion of such training, and in the rate at which they occur. Interestingly, blood pressure reductions associated with aerobic training (dynamic) are not thought to be dependent on exercise intensity. Indeed, in a subsequent study by the same group, higher-intensity double-leg training produced significant reductions in resting blood pressure after 4 weeks.
![leg isometric workout leg isometric workout](http://www.med-health.net/images/10415806/image001.jpg)
It appears from the data presented in their study (Figure 3), that most of the reductions in resting blood pressure occurred in the first 4 weeks in their higher-intensity training group (approximately 20% MVC), whereas the changes in the lower-intensity group (approximately 10% MVC) took 8 weeks. is the only study to prospectively investigate the effects of different isometric training intensities on the training-induced reductions in resting blood pressure.
![leg isometric workout leg isometric workout](https://www.bodybuilding.com/images/2020/march/10-reasons-to-try-isometric-training-header-960x540.jpg)
because they reported two different training studies, performed at intensities of 30% and 50% MVC, with differing lengths of contractions (4 ×2 min, 4 ×45 s) and recovery times (3 min, 1 min) for periods of 8 and 5 weeks, respectively. However, it is difficult to interpret the role of training intensity in the study by Wiley et al. Two studies have investigated the effects of isometric training intensity on reductions in resting blood pressure, one using handgrip and the other using double-leg extension. Most studies have focussed on the changes in resting blood pressure after training at a given intensity, mostly involving arm training at 30% maximum voluntary contraction (MVC) rather than examining the role of exercise intensity in the adaptations to training. However, it is not fully understood whether these reductions are accompanied by changes to the local vasculature or what role exercise intensity has in adaptations to this type of training. Previous studies have consistently shown reductions in resting blood pressure following isometric training. These findings show that training-induced reductions in resting blood pressure after isometric-leg training in healthy middle-aged men are associated with concomitant adaptations in the local vasculature, that appear to be dependent on training intensity and take place in the later stages of training. No significant changes occurred in any brachial artery measure nor in any parameters measured in the LO or CON groups.