La presenza di una lordosi lombare accentuata sembra associarsi alla tendenza a sviluppare mal di schiena nel corso del mantenimento di una postura in piedi prolungata.
Man Ther. 2015 Aug;20(4):553-7. doi: 10.1016/j.math.2015.01.001. Epub 2015 Jan 14.
Is lumbar lordosis related to low back pain development during prolonged standing?
Sorensen CJ1, Norton BJ2, Callaghan JP3, Hwang CT4, Van Dillen LR5.
Author information
1Program in Physical Therapy, Washington University School of Medicine in St. Louis, 4444 Forest Park Blvd., Campus Box 8502, Saint Louis, MO 63108, USA. Electronic address: sorensenc@wusm.wustl.edu.
2Program in Physical Therapy, Washington University School of Medicine in St. Louis, 4444 Forest Park Blvd., Campus Box 8502, Saint Louis, MO 63108, USA. Electronic address: nortonb@wustl.edu.
3Department of Kinesiology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L3G1. Electronic address: jack.callaghan@uwaterloo.ca.
4Program in Physical Therapy, Washington University School of Medicine in St. Louis, 4444 Forest Park Blvd., Campus Box 8502, Saint Louis, MO 63108, USA. Electronic address: hwangch@wusm.wustl.edu.
5Program in Physical Therapy, Washington University School of Medicine in St. Louis, 4444 Forest Park Blvd., Campus Box 8502, Saint Louis, MO 63108, USA. Electronic address: vandillenl@wustl.edu.
Abstract
BACKGROUND:
An induced-pain paradigm has been used in back-healthy people to understand risk factors for developing low back pain during prolonged standing.
OBJECTIVES:
The purposes of this study were to (1) compare baseline lumbar lordosis in back-healthy participants who do (Pain Developers) and do not (Non-Pain Developers) develop low back pain during 2 h of standing, and (2) examine the relationship between lumbar lordosis and low back pain intensity.
DESIGN:
Cross-sectional.
METHOD:
First, participants stood while positions of markers placed superficial to the lumbar vertebrae were recorded using a motion capture system. Following collection of marker positions, participants stood for 2 h while performing light work tasks. At baseline and every 15 min during standing, participants rated their low back pain intensity on a visual analog scale. Lumbar lordosis was calculated using marker positions collected prior to the 2 h standing period. Lumbar lordosis was compared between pain developers and non-pain developers. In pain developers, the relationship between lumbar lordosis and maximum pain was examined.
RESULTS/FINDINGS:
There were 24 (42%) pain developers and 33 (58%) non-pain developers. Lumbar lordosis was significantly larger in pain developers compared to non-pain developers (Mean difference = 4.4°; 95% Confidence Interval = 0.9° to 7.8°, Cohen’s d = 0.7). The correlation coefficient between lumbar lordosis and maximum pain was 0.46 (P = 0.02).
CONCLUSION:
The results suggest that standing in more lumbar lordosis may be a risk factor for low back pain development during prolonged periods of standing. Identifying risk factors for low back pain development can inform preventative and early intervention strategies.
Copyright © 2015 Elsevier Ltd. All rights reserved.