Parachutist jump which is being done from 5000 m high with parachute 'wing' type has many risical moments, such as: acceleration, fast deceleration, dysbarismus, hypoxy, with fall of partial preasure O2, dynamical hit on ostheomuscular byocinetical system chain at parachute opening, hyperadrenalinemia, temperature distress, centrifugal chemodynamical phenomenas and mechanical hit with low extremitets per lending. The research goal was to note expressions Low Back Pain Sy, in last year at parachutist with lower and higher than 200 parachutist jumps. Sample included so parachutist male gender, from 20 to 45 years old separated in 2 groups of 15 parachutist, with Low Back Pain Sy and: group A, 15 of them more than 200 jumps and group B with 15 of them with less then 200 jumps. Considered variables were: spasmus of musculature and pain rated by interval scale 1-5 and movement reduction in L-spine and number of episodes Low Back Pain Sy. In parachutist in last year of testing were tested by Student t-test for small semples and get these values: parachuters with more than 200 jumps had X ± SD = 3,2 ± 0,14 episodes of Low Back Pain Sy and those with less than 200 jumps had frequency of X ± SD = 1,8 ± 0,45 episodes with values t =3,35 and p< 0,005.Parachutist with higher number of jumps than 200 had significated incidence Low Back Pain Sy. Task in upcoming researches, to find ways how to lower appeared consequences, leading to lower morbidity and absentism, caused by bad exterior area and risical factors.
