Body fluids posture

Concentrations of adrenal mineralocorticoids (e.g., aldosterone and DOC) and factors of the renin-angiotensin system (e.g., renin) are routinely measured in body fluids by various immunoassay and instrument-based methods. Aldosterone, like cortisol, is secreted episodically, with the highest circulating concentrations at about the time of awakening and the lowest concentrations shortly after sleep onset aldosterone concentrations, however, are only modestly stimulated by ACTH secretion.In healthy subjects, a low-sodium diet, maintaining an upright posture, and use of diuretics ail increase plasma aldosterone concentrations,... 

Strain and pressure sensors and also biochemosensors for measuring characteristics of the human skin are particularly interesting for this kind of applications because they could measure a wide set of parameters such as posture, breathing activity body fluids composition, etc. in a totally nonintrusive way. This characteristic is in fact very interesting for practical applications. For instance, it would allow doctors to monitor the patient status in real time, 24 h a day additionally, it would afford a better quality of life to patients for whom they would be perceived as noninvasive monitoring systems. 

When you start walking, be conscious of your posture. Keep your shoulders, back, and spine straight with weight centered over the hips. Keep your head parallel to the ground. By taking smooth, easy steps, your body will move fluidly through the walking motion. 

In addition, standing produces a substantial increase in the transmural capillary pressure present in the dependent areas of the body, which causes a rise in fluid filtration into tissue spaces. This process reaches a steady state after approximately 30 min of upright posture and can produce a decline in plasma volume of up to 10% (6,10,11). 

---