Effects of exergame training combined with omega-3 fatty acids on the elderly brain: a randomized double-blind placebo-controlled trial

Table 8 Time × group interaction and time main effects of repeated measures Puri & Sen-analysis of ranked data for spatio-temporal gait parameters

	Interaction effect (time × intervention)					Main effect (time, pre vs. post)
	r²	L	p	Ƞ_p²	Ƞ_G²	r²	L	p	Ƞ_p²	Ƞ_G²
Speed
Single-task	< 0.001	0.012	.915	< 0.01	< 0.01	0.002	0.068	.798	< 0.01	< 0.01
Dual-task	0.005	0.214	.649	0.01	< 0.01	0.151	6.182	.011^*	0.15	0.02
Dual-task cost	< 0.001	0.013	.910	< 0.01	< 0.01	0.161	6.603	.008^*	0.16	0.04
Cadence
Single-task	0.010	0.419	.524	0.01	< 0.01	0.013	0.521	.477	0.01	< 0.01
Dual-task	< 0.001	0.018	.895	< 0.01	< 0.01	0.102	4.179	.039^*	0.10	0.02
Dual-task cost	0.002	0.084	.775	< 0.01	< 0.01	0.124	5.078	.022^*	0.12	0.03
Stride length
Single task	0.003	0.103	.753	< 0.01	< 0.01	0.002	0.085	.774	< 0.01	< 0.01
Dual-task	0.010	0.393	.537	0.01	< 0.01	0.177	7.250	.006^*	0.18	0.01
Dual-task cost	0.008	0.344	.564	0.01	< 0.01	0.123	5.036	.023^*	0.12	0.02
Toe clearance
Single-task	0.005	0.189	.669	< 0.01	< 0.01	0.160	6.551	.009^*	0.16	0.04
Dual-task¹	0.027	1.122	.301	0.03	0.01	0.177	7.252	.006^*	0.18	0.06
Dual-task cost ¹	0.071	2.928	.091	0.07	0.03	0.004	0.154	.703	< 0.01	< 0.01

N = 42; fish oil and exergame N = 22 and olive oil and exergame N = 20. *p < .05. η_p²: effect size. η_G²: effect size. ¹N = 41

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