Table 2.

Changes from baseline to post-test within and between the intervention group engaging in Nordic Walking and the control group engaging in Low-intensive walking

	Nordic walking (NW)			Low-intensive walking (LIW)			Δ NW vs. Δ LIW
	Baseline Mean (SD) N = 34	Post test vs. baseline Δ (SD) N = 29a	P-value	Baseline Mean (SD) N = 33	Post test vs. baseline Δ (SD) N = 29b	P-value	P-value
Primary Outcomes
6MWT, meter	525 (71.1)	37.7 (41.8)	<0.001	522 (56.1)	8.6 (42.2)	0.105	0.009
FIQ Pain, score	63.9 (21.2)	-4.0 (14.5)	0.190	71.5 (20.7)	-5.3 (16.3)	0.065	0.626
Secondary outcomes
Exercise heart rate at ergometer test, beats/minute	124.5(17.1)	-8.9 (12.8)	0.001	121.1 (12.2)	-3.1 (9.6)	0.079	0.020
FIQ Physical, score	42.8 (20.5)	-7.9 (12.6)	0.004	41.9 (23.35)	1.3(15.6)	0.929	0.027
FIQ Total, score	61.7 (18.3)	-4.8(12.3)	0.048	62.9 (18.6)	1.9(14.2)	0.374	0.064
Explorative variables MFI, score
General Fatigue	17.0 (3.1)	-0.9 (2.9)	0.091	17.3 (3.1)	-0.1 (2.7)	0.972	0.116
Physical Fatigue	16.2 (3.5)	-0.5 (2.8)	0.319	17.2 (3.5)	-1.0 (3.6)	0.280	0.932
Reduced Activity	14.5 (4.5)	-0.2 (2.8)	0.476	15.6 (4.4)	-0.5 (4.0)	0.194	1.000
Reduced Motivation	11.7 (4.3)	-1.0 (3.0)	0.072	10.3 (4.4)	0.9 (3.2)	0.287	0.031
Mental Fatigue	14.9 (3.5)	0.1 (2.5)	0.608	15.1 (3.9)	-0.4 (2.6)	0.461	0.336

Mean values, standard deviations (SD) and P-values for changes within and between the groups are given.

^aThe 6MWT was missing in a protocol, and the MFI scores in another. ^bThe FIQ scores were missing in a protocol and the MFI scores in two protocols. 6MWT, Six-Minute Walk Test, FIQ, Fibromyalgia Impact Questionnaire, MFI, Multidimensional Fatigue Inventory.