Effect of self-regulatory behaviour change techniques and predictors of physical activity maintenance in cancer survivors: a 12-month follow-up of the Phys-Can RCT

Table 5 Model 2- multiple ordinal logistic regression model estimating post-exercise intervention predictors of physical activity maintenance^a (n = 205)

Post-exercise intervention predictors		OR (95% CI)	P-value
Anxiety	Per 1 unit on a 0–21 scale	1.06 (0.94–1.20)	0.309
Cancer-related fatigue	Per 1 unit on a 4–20 scale	0.99 (0.88–1.12)	0.877
HRQoL	Per 1 unit on a 0–100 scale	1.01 (0.97–1.03)	0.928
Exercise self-efficacy	Per 1 unit on a 0–10 scale	0.94 (0.77–1.14)	0.514
Exercise motivation	Per 1 unit on a 0–100 scale	1.00 (0.98–1.02)	0.923
VO₂max change^b	Per 1 mL/kg/min	0.99 (0.90–1.10)	0.938
BMI change^b	Per 1 kg/m²	0.63 (0.44–0.90)	0.011
Upper muscle strength change^b	Per kg	0.95 (0.88–1.04)	0.284
Lower muscle strength change^b	Per kg	1.03 (0.98–1.08)	0.252
Adherence to the intervention (resistance training)	Per %	1.00 (0.98–1.03)	0.806
Adherence to the intervention (endurance training)	Per %	1.00 (0.99–1.02)	0.521
Randomisation groups	HI with BCTs	1.00
	HI without BCTs	0.35 (0.13–0.95)	0.040
	LMI with BCTs	0.87 (0.30–2.56)	0.802
	LMI without BCTs	0.46 (0.17–1.25)	0.126

^aCategorized as maintainers or non-maintainers at 12-month follow-up, ^b Change scores were computed by subtracting the baseline score from the post-exercise intervention score. The results indicate the individual contribution of each variable after adjusting for all the other variables included in the model. OR Odds ratio, CI confidence interval, HRQoL: Health-related quality-of-life, VO₂max Maximal oxygen uptake, BMI Body mass index, HI High intensity exercise, BCTs Self-regulatory behaviour change techniques, LMI Low-to-moderate intensity exercise. Bold values indicate p-values below 0.050

ISSN: 1471-2407