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.

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-loading}

< 0.001

<0.001

P_Group

> 0.05

TL_BACK (N):

69.66 ± 5.57

68.01 ± 4.16

P_{Normal/Off-loading}

< 0.001

<0.001

P_Group

> 0.05

Makhsous et al. BMC Musculoskeletal Disorders 2009 10:17   doi:10.1186/1471-2474-10-17