Comparison 1. Behavioural group treatment versus wait list control.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 Pulmonary function	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1.1 FEV1 (% predicted)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1.2 FVC (% predicted)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1.3 FEF25-75% (% predicted)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.2 Anthropometric measures	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.2.1 Weight (z score)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.2.2 Height (z score)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.3 Adherence	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.3.1 Activity level ‐ Resting energy expenditure (% predicted)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.3.2 Activity level ‐Resting energy expenditure (Kcal/24 hours)	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.3.3 Activity level ‐Activity points	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.3.4 Change in Kcalorie intake	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.4 Nutrition status	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.4.1 % Body Fat	1		Mean Difference (IV, Random, 95% CI)	Totals not selected