title: [Kayakers' length of training period lumbar segment mobility and weak links occurrence in biokinematics chain].
abstract: BACKGROUND
  Strength shaping in canoeists can cause limitation of spine movement and pain symptoms. Because of the problem's importance the following study has been undertaken: in order to: 1) determine the relationship between the range of lumbar spine mobility and training experience in kayaking; 2) estimate of the relationship between the occurrence of weak links and symptoms of pain and range of motion in the lumbar spine.
  
  
  METHODS
  25 Wałcz SMS players were examined, including 8 female kayakers, 8 canoeists and 9 canadians. Age (M +/- SD) 15.60 +/- 1.04 years; training period 5.64 +/- 1.78 years. Low threshold Performance Matrix. tests were used. to assess the presence of a weak connection The participants determined the sensation of pain in the lumbar spine (LBP) on a numeric scale. Mobility in the lumbar spine was rated by electrogoniametrics method. The results were statistically analyzed using analysis of variance ANOVA, Tukey's t tests and linear regression analysis.
  
  
  RESULTS
  In all examined players weak connection in the lumbar spine were found in the direction of flexion, rotation and lateral flexion, and there were no weak links in the direction of extension. Only 10 players did not suffer from LBP. The other declared the existence of these symptoms. It has been found that the length of training period in kayaking is associated with reduced mobility in the lumbar spine and the occurrence of weak links. As a result pain symptoms have often occurred. Gender and specialization have no influence on the frequency and Range of LBP symptoms in kayaking.
  
  
  CONCLUSIONS
  1) Sports training in kayaking causes reduced mobility of the lumbar spine and may cause weak links in the chain of biokinenatics connections and symptoms of LBP. 2) Gender and sports specialization does not differentiate canoeists because of LBP symptoms. The reasons for their occurrence can be ascribed to the use of weight training.
authors.affiliation: Wydział Zdrowia Publicznego, Wyzsza Szkoła Pedagogiki i Administracji w Poznaniu. malgowojcik@yahoo.pl
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Wójcik
authors.forename: Idzi
authors.initials: I
authors.lastname: Siatkowski
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Rynkiewicz
authors.forename: Mateusz
authors.initials: M
authors.lastname: Rynkiewicz
authors.forename: Piotr
authors.initials: P
authors.lastname: Zurek
mesh_terms: D000293:Adolescent; D000704:Analysis of Variance; D054874:Athletic Performance / Q000502:physiology*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000517:prevention & control*; D008159:Lumbar Vertebrae; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology*; D011044:Poland; D016059:Range of Motion, Articular; D012767:Ships; D012785:Shoulder Joint / Q000502:physiology