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Table 3 Load changes (Mean ± SE) on chair backrest in medial-lateral, inferior-superior and posterior-anterior directions, as well as the total load (TL) induced by change from Normal to Off-Loading.

From: Biomechanical effects of sitting with adjustable ischial and lumbar support on occupational low back pain: evaluation of sitting load and back muscle activity

 

Asymptomatic (N = 10)

LBP (N = 25)

Lateral load (N):

-1.32 ± 0.86

-0.66 ± 0.67

P Normal/Off-loading

>0.05

>0.05

P Group

> 0.05

 

Superior load (N):

-22.25 ± 1.44

-23.64 ± 1.96

P Normal/Off-loading

< 0.001

<0.001

P Group

> 0.05

 

Posterior load (N):

66.79 ± 5.57

66.19 ± 3.42

P Normal/Off-loadin

< 0.001

<0.001

P Group

> 0.05

 

TL BACK (N):

69.66 ± 5.57

68.01 ± 4.16

P Normal/Off-loadin

< 0.001

<0.001

P Group

> 0.05

 
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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