Table 4. Maximal exercise capacity by perinatal characteristics (univariate analysis).

			Wmax (Watt)
		N	Mean	SD	P
Multiple births					<0.001
Singleton		215,055	306	50
Twins or N-tuplets		3,765	305	50
Gestational age (weeks)					<0.001
≤27		56	278	55
28–31		726	292	47
32–36		9,930	302	49
37–41		182,490	307	50
≥42		25,618	306	51
Birth Weight SDS					<0,001
<−2		7,052	287	49
−2 to −1		35,747	296	49
−1 to 1		147,819	308	49
1 to 2		22,970	318	51
>2		5,232	322	52

SDS = Standard Deviation Score.