Trunk rotation-related impairments in people with low back pain who participated in 2 different types of leisure activities: a secondary analysis.
METHODS
Cross-sectional, secondary analysis.


OBJECTIVE
To examine whether there were differences in the numbers and types of impairments on examination between 2 groups of people with low back pain (LBP), those who participated in symmetric leisure activities and those who participated in asymmetric leisure activities.


BACKGROUND
It has been proposed that people who repeatedly perform an activity that involves trunk movements and alignments in the same direction will develop strategies that are generalized to many activities. The repeated use of these strategies is proposed to contribute to impairments identifiable on examination and to LBP.


METHODS
Forty males and 40 females (mean +/- SD age, 41.4 +/- 13.9 years) with LBP who reported participation in either a symmetric or an asymmetric leisure activity participated in a standardized examination. Responses from 10 trunk-rotation-related impairment tests were analyzed using the Mann-Whitney U and chi-square statistics.


RESULTS
Thirty people participated in asymmetric leisure activities and 50 people participated in symmetric leisure activities. The total number of rotation-related impairments was different for the 2 groups (U = 1112, P < .01). The asymmetric group displayed more total rotation-related impairments (median, 4.0; range, 7) than the symmetric group (median, 2.0; range, 6). A greater percentage of the asymmetric group displayed more impairments on 5 out of 10 individual tests, as compared to the symmetric group ( < or = .05 for all comparisons).


CONCLUSIONS
Our results provide preliminary data to suggest that trunk-rotation-related impairments, identified on examination, may be related to the general type of movements and alignments used repeatedly by patients with LBP.
Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, St Louis, MO 63110, USA. vandillenl@msnotes.wustl.edu
Linda R
LR
Van Dillen
Shirley A
SA
Sahrmann
Cheryl A
CA
Caldwell
Mary Kate
MK
McDonnell
Nancy
N
Bloom
Barbara J
BJ
Norton
D000293:Adolescent; D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007899:Leisure Activities; D017116:Low Back Pain / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D008923:Missouri; D012399:Rotation; D034941:Upper Extremity