title: Isokinetic testing of flexor and extensor muscles in athletes suffering from low back pain.
abstract: BACKGROUND
  The aim of the study was to verify the usefulness of isokinetic testing in athletes with chronic low back pain (LBP) to obtain quantitative information for rehabilitation purposes.
  
  
  METHODS
  
  
  
  METHODS
  a comparative study.
  
  
  METHODS
  Physiotherapy Department--Institute of Sports Medicine in Italy.
  
  
  METHODS
  50 men, aged 25-65, practising running, cycling, triathlon, tennis, soccer, basketball, volleyball, skiing and golf. The patients were divided into two groups. Group A was treated for 3 months with postural exercises 2 or 3 times a week. Group B was treated for the same period of time with resistive exercises performed by resorting to specific machines.
  
  
  METHODS
  Before and after treatment, trunk muscle strength was evaluated by means of an isokinetic test carried out in a seated position. The isokinetic measurements used were peak torque (PT), work, power-in the best repetition and total work (TW) in four repetitions. Both the pain and the functional impairment during physical activity was evaluated by subjective visual analogic scale.
  
  
  RESULTS
  The PT showed a parallel increase in flexor and extensor muscles in Group A. In Group B it increased by 32.2% at 60 degrees/s and 44.1% at 120 degrees/s as for the extensor muscles while the flexion-to-extension ratio decreased significantly. The TW registered a bigger percentage increase in both groups (+21% at 60 degrees/s and +20.4% at 120 degrees/s in Group A; +36.5% at 60 degrees/s and +50.3% at 120 degrees/s in Group B).
  
  
  CONCLUSIONS
  The two rehabilitation programmes had the same effect on the course of LBP, but in Group B we observed a bigger increase in strength which could be potentially useful during a sports activity.
authors.affiliation: Institute of Sports Medicine, CONI-FMSI, Turin, Italy.
authors.forename: G P
authors.initials: GP
authors.lastname: Ganzit
authors.forename: L
authors.initials: L
authors.lastname: Chisotti
authors.forename: G
authors.initials: G
authors.lastname: Albertini
authors.forename: M
authors.initials: M
authors.lastname: Martore
authors.forename: C G
authors.initials: CG
authors.lastname: Gribaudo
mesh_terms: D000009:Abdominal Muscles / Q000503:physiopathology*; D000328:Adult; D001415:Back; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000503:physiopathology*; D010147:Pain Measurement