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Assessing the predictive relationshi...

Thiese, Mattew S.

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Assessing the predictive relationship between physical activity and low back pain.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Assessing the predictive relationship between physical activity and low back pain./
Author:	Thiese, Mattew S.
Description:	112 p.
Notes:	Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1601.
Contained By:	Dissertation Abstracts International69-03B.
Subject:	Health Sciences, Epidemiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3303437
ISBN:	9780549500636

Assessing the predictive relationship between physical activity and low back pain.
Thiese, Mattew S.

Assessing the predictive relationship between physical activity and low back pain. - 112 p.

Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1601.

Thesis (Ph.D.)--The University of Utah, 2008.

Low back pain (LBP) is arguably the most frequent and disabling conditions affecting the general population. Many studies investigate the relationship between physical activity and the treatment of existing LBP, yet there is scant research that assesses the potential preventive relationship that physical activity has on LBP. The goal of this study is to assess the relationship between total objectively measured physical activity with the incidence of LBP after controlling for known and suspected risk factors in a prospective cohort study design. There was a broad range of minutes of light and moderate activity and few minutes of vigorous activity with correlations between free-living derived cut points lower than those comparing laboratory derived cut points. The nested cohort study utilized objective measure of physical activity via accelerometer in 68 participants who wore the accelerometer for at least 12 hours a day for at least five days, including one day off of work. These participants were then followed for approximately 17 months for a total of 92.7 person years with 30 first incident cases of LBP. Mean counts per minute were divided into tertiles and quartiles and total mean minutes of light, moderate, vigorous activity were divided into tertiles. Analyses of quartiles of mean counts per minute obtained statistically significant relative risk and hazard ratio estimates when comparing both the lowest quartile and the highest quartile with the second highest (50%--75%) quartile. Similar significant relationships were found for relative risk of LBP for moderate and vigorous physical activity. There was a statistically significantly increased risk of development of LBP in the highest tertile of mean counts per minute when compared with the middle tertile. Multivariate analyses were performed demonstrating similar, if not stronger associations. Middle tertiles of mean counts per minute and minutes of moderate physical activity were protective for the development of subsequent LBP of any intensity in this cohort, including after adjustment for other known and suspected risk factors. This relationship was nonlinear suggesting that higher levels of participation did not demonstrate increased protection from LBP.

ISBN: 9780549500636Subjects--Topical Terms:

1019544
Health Sciences, Epidemiology.

Assessing the predictive relationship between physical activity and low back pain.
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245 1 0 $a Assessing the predictive relationship between physical activity and low back pain.
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500 $a Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1601.
502 $a Thesis (Ph.D.)--The University of Utah, 2008.
520 $a Low back pain (LBP) is arguably the most frequent and disabling conditions affecting the general population. Many studies investigate the relationship between physical activity and the treatment of existing LBP, yet there is scant research that assesses the potential preventive relationship that physical activity has on LBP. The goal of this study is to assess the relationship between total objectively measured physical activity with the incidence of LBP after controlling for known and suspected risk factors in a prospective cohort study design. There was a broad range of minutes of light and moderate activity and few minutes of vigorous activity with correlations between free-living derived cut points lower than those comparing laboratory derived cut points. The nested cohort study utilized objective measure of physical activity via accelerometer in 68 participants who wore the accelerometer for at least 12 hours a day for at least five days, including one day off of work. These participants were then followed for approximately 17 months for a total of 92.7 person years with 30 first incident cases of LBP. Mean counts per minute were divided into tertiles and quartiles and total mean minutes of light, moderate, vigorous activity were divided into tertiles. Analyses of quartiles of mean counts per minute obtained statistically significant relative risk and hazard ratio estimates when comparing both the lowest quartile and the highest quartile with the second highest (50%--75%) quartile. Similar significant relationships were found for relative risk of LBP for moderate and vigorous physical activity. There was a statistically significantly increased risk of development of LBP in the highest tertile of mean counts per minute when compared with the middle tertile. Multivariate analyses were performed demonstrating similar, if not stronger associations. Middle tertiles of mean counts per minute and minutes of moderate physical activity were protective for the development of subsequent LBP of any intensity in this cohort, including after adjustment for other known and suspected risk factors. This relationship was nonlinear suggesting that higher levels of participation did not demonstrate increased protection from LBP.
590 $a School code: 0240.
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