The results suggest there is currently no evidence to support the use of dynamic sitting as a st and -alone approach in the management of LBP .
Overall , the evidence suggests that dynamic sitting approaches are not effective as a st and -alone management approach for LBP
Dynamic sitting has been proposed to reduce  low back pain ( LBP ) and /or low back discomfort ( LBD ) while sitting .
This is supported by studies suggesting that subjects with LBP assume more static , sustained postures while sitting .
This systematic review investigated the effect of dynamic sitting on LBP among subjects with LBP and the development of LBD among pain-free subjects .
Practitioner Summary : This systematic review investigated the effect of dynamic sitting on LBP or LBD .
The PEDro scale is a valid measure of the methodological quality of clinical trials: a demographic study.
QUESTIONS Does the PEDro scale measure only one construct ie , the method ological quality of clinical trials ? What is the hierarchy of items of the PEDro scale from least to most adhered to ? Is there any effect of year of publication of trials on item adherence ? Are PEDro scale ordinal scores equivalent to interval data ? DESIGN Rasch analysis of two independent sample s of 100 clinical trials from the PEDro data base scored using the PEDro scale . RESULTS Both sample s of PEDro data showed fit to the Rasch model with no item misfit . The  PEDro scale item hierarchy was the same in both sample s , ranging from the most adhered to item r and om allocation , to the least adhered to item therapist blinding . There was no differential item functioning by year of publication . Original PEDro ordinal scores were highly correlated with transformed PEDro interval scores ( r = 0.99 ) . CONCLUSION The PEDro scale is a valid measure of the method ological quality of clinical trials . It is valid to sum PEDro scale item scores to obtain a total score that can be treated as interval level measurement and subjected to parametric statistical analysis
The results suggest there is currently no evidence to support the use of dynamic sitting as a st and -alone approach in the management of LBP .
Overall , the evidence suggests that dynamic sitting approaches are not effective as a st and -alone management approach for LBP
Dynamic sitting has been proposed to reduce  low back pain ( LBP ) and /or low back discomfort ( LBD ) while sitting .
This is supported by studies suggesting that subjects with LBP assume more static , sustained postures while sitting .
This systematic review investigated the effect of dynamic sitting on LBP among subjects with LBP and the development of LBD among pain-free subjects .
Practitioner Summary : This systematic review investigated the effect of dynamic sitting on LBP or LBD .