In addition, minor studies looked at the following:
This study aims to use Duplex Doppler Ultrasound imaging and spectral analysis to quantify changes in blood flow velocity and blood flow volume in major axial arteries and veins when the air jet is applied directly over them. Data on 1 subject suggests that changes do occur. Further work is required.
Delayed onset muscle soreness is used as a model of muscle injury. A project on the effect of Jet Therapy on the resolution of the pain of delayed onset muscle soreness is being planned.
The temperature of the air leaving the Jet was measured using the "sport" and "agitator" applicator heads at .5, 1 and 1.5 atmosphere pressure. The temperature of the air entering the compressor is the ambient air temperature.
With an external ambient air temperature of 26.3 c and a room temperature averaging 19.75 (+- 0.16c) during the course of taking temperatures of the air leaving the applicator heads, the average Jet air temperature measured 5 cm from the applicator heads was 18.93 c (+-0.28c).
Skin temperature on the dorsum of the foot was measured during 25 treatments of the foot using the "sport" and "agitator" applicator heads at a treatment pressure of 1 atmosphere.
Skin temperature was reduced by 4c after 20 minutes of treatment and by 5.05c after 45 minutes of treatment.
This involved a test of pain ratings and "range of movement" readings before and after Jet Therapy treatment in a sample of sportsmen that had just completed a gruelling endurance event over a three-day period. Statistical analysis was performed using the two-tailed Mann- Whitney test.