Intermittent negative pressure influences popliteal artery shear rate during supine and sitting postures.

Intermittent negative pressure is an emerging treatment for lower limb vascular disease but the specific physiological effects, particularly upon large artery haemodynamics are unclear. This study examined the influence of intermittent negative pressure upon popliteal artery shear rate during both supine and sitting postures. Eleven healthy participants (5 female; age: 28.

External negative pressure transiently reduces intravenous pressure and augments the arteriovenous pressure gradient in the affected limb segment.

Recently intermittent negative pressure has emerged as a potential treatment in vascular disease and has similarities with established experimental interventions such as lower body negative pressure. The direct, local influences of either method upon intravascular pressure still require some clarification however, particularly in the immediate moments following onset. We investigated the acute intravascular pressure responses to intermittent cycles of negative pressure in the supine and sitting postures.

Sports safety matting diminishes cardiopulmonary resuscitation quality and increases rescuer perceived exertion.

Objectives: Compliant surfaces beneath a casualty diminish the quality of cardiopulmonary resuscitation (CPR) in clinical environments. To examine this issue in a sporting environment, we assessed chest compression quality and rescuer exertion upon compliant sports safety matting.

Methods: Twenty-seven advanced life support providers volunteered (13 male/14 female; mass = 79.

Cardiorespiratory demands of competitive rock climbing.

Rock climbing has become a mainstream sport, contested on the Olympic stage. The work/rest pattern of bouldering is unique among disciplines, and little is known about its physiological demands. This study characterised the cardiorespiratory responses to simulated competition.

The exercise pressor response to indoor rock climbing.

This paper assessed the blood pressure, heart rate, and mouth-pressure responses to indoor rock climbing (bouldering) and associated training exercises. Six well-trained male rock climbers (mean ± SD age, 27.7 ± 4.