Table 6.

Effect of recreational football on body mass index and body mass with modifying effects for type of control group, gender, age, length of training intervention and training frequency

	Body mass index (kg/m2)			Body mass (kg)
	Effect size (95% CI)	±95% CL	Magnitude-based inference	Effect size (95% CI)	±95% CL	Magnitude-based inference
Type of control
No exercises	0.28 (−0.12 to 0.67)	0.41	Possibly small beneficial	0.70 (−0.29 to 1.68)	1.0	Unlikely small beneficial
Running group	−0.12 (−0.54 to 0.30)	0.45	Unlikely trivially harmful	−0.21 (−1.34 to 0.92)	1.2	Very unlikely small harmful
Zumba group	−0.40 (−1.34 to 0.54)	0.99	Possibly small harmful	0.09 (−2.58 to 2.75)	2.9	Unlikely trivially harmful
Gender
Male	0.54 (0.15 to 0.93)	0.37	Likely small beneficial	1.64 (0.42 to 2.87)	1.2	Likely largely beneficial
Female	−0.19 (−0.50 to 0.13)	0.33	Unlikely trivially harmful	−0.14 (−0.94 to 0.67)	0.9	Very unlikely trivially harmful
Age (years)
18–45	0.02 (−0.36 to 0.41)	0.42	Very unlikely trivially harmful	−0.17 (−1.03 to 0.68)	0.9	Very unlikely trivially harmful
45–65	0.02 (−0.63 to 0.67)	0.69	Unlikely trivially harmful	1.08 (−0.47 to 2.63)	1.6	Possibly moderately beneficial
>65	0.50 (−0.03 to 1.03)	0.53	Possibly small beneficial	1.52 (−0.13 to 3.17)	1.7	Possibly largely beneficial
Length of training intervention
≤12 weeks	0.46 (−0.24 to 1.13)	0.71	Possibly small beneficial	1.04 (−0.98 to 3.06)	2.1	Unclear
>12 weeks	0.03 (−0.24 to 0.30)	0.29	Most unlikely trivially beneficial	0.32 (−0.39 to 1.04)	0.8	Most unlikely small harmful
Training frequency
≤2 weeks	0.01 (−0.27 to 0.29)	0.31	Very unlikely trivially harmful	0.15 (−0.60 to 0.90)	0.8	Most likely trivially beneficial
>2 weeks	0.39 (−0.13 to 0.92)	0.54	Possibly small beneficial	1.48 (−0.07 to 3.03)	1.6	Possibly largely beneficial

95%CI, Confidence interval at 95%; ±95%CL, Confidence limit at 95%.