[Comparison of trunk muscle strength of soccer players with and without low back pain]. 2010

U Maus, and O Kieffer, and C H Siebert, and R Müller-Rath, and S Andereya, and D Eisenhardt, and O Miltner
Klinik für Orthopädieund Unfallchirurgie, Schwerpunkt Orthopädie RWTH Aachen, 52074 Aachen. umaus@ukaachen.de

OBJECTIVE Low back pain in soccer players is one of the frequently appearing disorders caused by overuse. Myogenic dysbalances are under discussion as possible reason for this problem. In the present study the muscular strength profile of the trunk musculature of soccer players with and without low back pain was evaluated. The results of the asymptomatic players were compared to those of players with low back pain; furthermore, the collected data were compared to those of an asymptomatic reference group. The question posed was whether soccer players show a specific strength profile caused by the special, sports-specific requirements and whether this strength profile differs between players with and without low back pain. METHODS In the present study the isometric maximal strength of 18 soccer players with and 18 soccer players without low back pain was measured in all 3 planes. The reference group was provided by the Proxomed company, which had previously analysed 1045 healthy untrained individuals of various age groups. RESULTS The soccer players showed a sport-specific profile for the musculature, which was determined by a significant reduction of the flexion and rotation strength (flex: Ø 5.21 N/kg vs. Ø 6.49 N/kg; Ø 5.78 N/kg vs. Ø 6.66 N/kg respectively; rotation: left 7.09 N/kg, right 8.69 N/kg vs. left/right 10.1 N/kg; left 7.22 N/kg, right 8.24 N/kg vs. left/right 10.0 N/kg, respectively) as well as by an increased lateral flexion strength to the right-hand side in comparison to the reference group (lat. flex. right: 9.87 N/kg, respectively, 10.67 N/kg vs. 8.3 N/kg). A statistically significant correlation between the muscular activity in the trunk stability of soccer players with and without low back pain could not be shown. CONCLUSIONS Obviously sports-specific training with additional specific training of the trunk muscles is not sufficient for the development of a balanced strength of trunk musculature. In the present study an influence of the performance of the trunk musculature on the incidence of low back pain could not be shown.

UI MeSH Term Description Entries
D007537 Isometric Contraction Muscular contractions characterized by increase in tension without change in length. Contraction, Isometric,Contractions, Isometric,Isometric Contractions
D008297 Male Males
D010806 Physical Education and Training Instructional programs in the care and development of the body, often in schools. The concept does not include prescribed exercises, which is EXERCISE THERAPY. Education, Physical,Physical Education,Physical Education, Training
D010809 Physical Fitness The ability to carry out daily tasks and perform physical activities in a highly functional state, often as a result of physical conditioning. Fitness, Physical
D012016 Reference Values The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality. Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D012090 Cumulative Trauma Disorders Harmful and painful condition caused by overuse or overexertion of some part of the musculoskeletal system, often resulting from work-related physical activities. It is characterized by inflammation, pain, or dysfunction of the involved joints, bones, ligaments, and nerves. Overuse Syndrome,Repetition Strain Injury,Trauma Disorders, Cumulative,Injury, Repetition Strain,Overuse Injury,Repetitive Motion Disorders,Repetitive Strain Injury,Repetitive Stress Injury,Strain Injury, Repetition,Cumulative Trauma Disorder,Injury, Overuse,Injury, Repetitive Strain,Injury, Repetitive Stress,Motion Disorder, Repetitive,Overuse Injuries,Overuse Syndromes,Repetition Strain Injuries,Repetitive Motion Disorder,Repetitive Strain Injuries,Repetitive Stress Injuries,Strain Injury, Repetitive,Stress Injury, Repetitive,Trauma Disorder, Cumulative
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001265 Athletic Injuries Injuries incurred during participation in competitive or non-competitive sports. Sports Injuries,Injuries, Athletic,Injuries, Sports,Athletic Injury,Injury, Athletic,Injury, Sports,Sports Injury
D012916 Soccer A game in which a round inflated ball is advanced by kicking or propelling with any part of the body except the hands or arms. The object of the game is to place the ball in opposite goals. European Football,Football European,European, Football,Europeans, Football,Football, European

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