Short- and long-term effectiveness of a three-month individualized need-supportive physical activity counseling intervention at the workplace

Table 5 Short- and long-term intervention effects on psychological need satisfaction

	Intervention group			Reference group			Short-term intervention effect			Long-term intervention effect
	Baseline	Post (3 months)	Follow-up (9 months)	Baseline	Post (3 months)	Follow-up (9 months)	Main effect of time	2x2 interaction^a	ES	Main effect of time	3x2 interaction^b	ES
	Mean (SE)	Mean (SE)	Mean (SE)	Mean (SE)	Mean (SE)	Mean (SE)	F	F	d	F	F	d
Need satisfaction (1–5)
Autonomy	3.05 (0.05)	3.51 (0.05)	3.43 (0.06)	3.17 (0.11)	3.32 (0.10)	3.30 (0.12)	21.517***	5.331*	0.35	10.860***	3.002	0.26
Competence	2.80 (0.05)	3.17 (0.05)	2.96 (0.07)	2.77 (0.10)	2.77 (0.11)	2.72 (0.13)	6.820**	6.803*	0.40	3.889*	3.894*	0.30
Relatedness	3.03 (0.07)	3.14 (0.07)	2.92 (0.09)	3.05 (0.15)	3.06 (0.14)	2.92 (0.18)	0.538	0.332	0.09	1.806	0.227	0.07
Total needs^c	2.96 (0.04)	3.27 (0.04)	3.11 (0.05)	3.00 (0.09)	3.05 (0.09)	3.00 (0.11)	10.260**	5.085*	0.34	5.664**	3.060*	0.27

SE Standard error, ES Effect size
*p < .05, **p < .01, ***p < .001
^a2(time) x 2(group) interaction effect; ^b3(time) x 2(group) interaction effect; ^ccomposite variable of autonomy, competence and relatedness need satisfaction

ISSN: 1471-2458