Table 2.

Differences in NRS, RDQ Norm-Based Score, and Walking Disability in LBP (+) and EILBP (+).

	LBP (+)	EILBP (+)	p value
	n=23	n=68
NRS	5.6±2.1	5.7±2.3	0.936
RDQ norm-based score	51.9±6.3	45.7±9.3	0.005
RDQ Q3. I walk more slowly than usual because of my back.
Yes	7	48	<0.001
No	15	16
RDQ Q17. I only walk short distances because of my back.
Yes	4	42	<0.001
No	18	23
SF-36 Limitations of activities
Walking more than 1 km
Yes, Limited a lot	0	13	<0.001
Yes, Limited a little	5	30
No, Not Limited at all	18	17
Walking several hundreds of meters
Yes, Limited a lot	0	9	0.020
Yes, Limited a little	5	23
No, Not Limited at all	18	28
Walking about 100 m
Yes, Limited a lot	0	2	0.044
Yes, Limited a little	1	16
No, Not Limited at all	22	42

Data are shown as n or mean±standard deviation.

LBP (+), presence of LBP without EILBP; EILBP (+), presence of EILBP.

Abbreviations: NRS, numerical rating scale; RDQ, Roland-Morris Disability Questionnaire; SF-36, MOS 36-Item Short-Form Health Survey; EILBP, exercise-induced low back pain