Table 4. Leisure-Time Physical Activity (LTPA) Change (min/wk) From 11 to 15 Years, According to Some Physical Activity Characteristics Assessed at 11 years, in the 1993 Pelotas (Brazil) Birth Cohort Study, 2004–2008.

Physical activity characteristic at 11 y	N	All		Boys		Girls
				Adjusted mean change (min/wk)a
		Mean	95%CI	Mean	95%CI	Mean	95%CI
Type of LTPA	3,976	P < .01		P = .34		P = .01
None	756	−61	−99, −24	12	(−64, 88)	−84	−115, −52
Individual	312	−30	−85, 25	84	−26, 195	−53	−99, −6
Team	1,804	24	1, 47	82	44, 120	−40	−62, −18
Both	1,104	70	39, 102	95	49, 141	1	−33, 36
Number of LTPA	4,119	P < .01*		P = .01*		P < .01*
0	756	−63	−100, −25	5	−71, 80	−83	−115, −52
1	1,145	−11	−40, 18	56	4, 108	−58	−84, −31
2	975	32	1, 63	67	18, 117	−27	−58, 5
3	623	58	19, 98	104	43, 165	−7	−48, 34
4 or more	620	89	46, 132	130	66, 193	17	−30, 65
Any LTPA	4,119	P < .01		P = .09		P = .02
No	756	−51	−88, −15	15	−60, 89	−76	−107, −45
Yes	3,363	30	13, 47	84	56, 111	−32	−48, −15
LTPA (quartiles)	4,120	P < .01*		P = .10*		P < .01*
1	1,033	−55	−90, −21	47	−22, 116	−83	−112, −53
2	1,108	−29	−60, 2	23	−34, 80	−58	−86, −30
3	977	56	25, 87	101	51, 151	−12	−43, 19
4	1,002	96	52, 141	105	46, 165	31	−27, 88
Organized sports activities	4,116	P = .01		P = .33		P = .40
None	2,986	4	−14, 22	61	30, 91	−46	−63, −29
School	474	−2	−47, 42	111	30, 192	−51	−91, −11
Outside school	567	73	33, 114	95	35, 155	−15	−61, 32
Both	89	103	0, 205	172	12, 332	18	−90, 125
Active commuting to school	4,099	P = .90		P = .57		P = .42
No	966	14	−18, 45	89	35, 143	−52	−82, −23
Yes	3133	16	−2, 33	71	42, 100	−39	−55, −22
Self-perceived LTPA (compared with friends)	4,114	P < .01*		P < .01*		P < .01*
Less	718	−44	−80, −8	−22	−89, 39	−83	−118, −48
Same	2,761	17	−1, 35	81	49, 112	−37	−54, −20
More	635	74	36, 113	151	90, 213	−14	−53, 24
Total	4,120	15	1, 30	75	49, 100	−42	−57, −28

Abbreviations: LTPA, leisure-time physical activity

^aAdjusted for baseline LTPA (min/wk) and follow-up duration (months).

^*P-value for linear trend.