The ventilatory threshold is the point of exercise where your breathing starts to increase and become labored. It is when you cannot seem to pull in enough air.
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It varies from person to person. However - an accepted 'normal' hearing range is around 20 Hz to 20,000 Hz. The same goes for pain threshold - anything over 120 dB would certainly be uncomfortable for most people.
it means your body sends more pain then needed towards places that have been punched, kicked ect then someone with regular pain threshold. as pain is just a message from your body saying to stop but if you have a low pain threshold your body sends too much pain.
Jessica Cowen has written: 'A comparison of 3-minute and 4-minute stages when identifying the ventilatory threshold in runners'
They both are reached are approx the same time, it is thought to be that the large change (drop) in blood pH when the lactate threshold is reached is causes ventilation to increase rapidly to try and counteract this blood pH change. The lactate threshold itself is just the point at which lactate removal can no longer keep up with lactate production.
Lactate Threshold and Anaerobic Threshold (also known as the Onset of Blood Lactate Accumulation OBLA) are very similar and for most intents and purposes are referred to as the same thing. Lactate Threshold is the point at which lactic acid produce in the muscle during glycolysis is not metabolised as fast as it is being produced. Anaerobic Threshold is the result of this Lactate Threshold, after Lactate Threshold occurs the extra lactic acid from the muscle then acuminates into the blood, once Blood Lactate (BL) level reaches 4 mmol/L it is defined as Anaerobic Threshold or OBLA. Additionally, this Lactic acid is then Broken into lactate and acid (H+ ions). The lactate is recycled and used as an energy source, while the H+ ions are neutralised in the blood, with a by-product being CO2, the CO2 then needs to be expelled through ventilation, this is called Ventilatory Threshold (VT) and is characterised by a sudden heavy ventilation. Put simply Lactate Threshold, Anaerobic Threshold and Ventilatory Threshold happen in a cascade chain and each threshold usually occurs soon after the one before it. (non-plagarised reference: s4121335 UQ)
Both asthma and emphysema are examples of obstructive ventilatory defect
Ventilatory assistance devices may need to be used because of polio
Ventilatory assistance devices may need to be used because of ALS
Ventilatory assistance devices may need to be used because of myasthenia gravis
Ventilatory assistance devices may need to be used because of muscular dystrophies
Ventilatory assistance devices may need to be used because of amyotrophic lateral sclerosis
Ventilatory assistance devices may need to be used because of Guillain-Barre syndrome
The person who needs ventilatory assistance generally has normal gas exchange capacity, and simply needs help moving air in and out
Ventilatory assistance devices may need to be used because of high spinal cord injuries