Supplementary table 4.

Pitch size and locomotor demands during small-sided games in U18 soccer players.

N° Player	m	m2	m2⋅player	TD	HSR	VHSR	SPR	Acc/Dec
10 vs 10	60 × 52	3120	156	102.8 (8.4)	10.3 (4.6)	2.3 (2.0)	0.4 (0.7)	4.5 (0.9)
9 vs 9	50 × 60	3000	166.7	88.8 (6.8)	9.2 (2.8)	1.9 (0.9)	0.5 (0.6)	3.0 (0.8)
	40 × 52	2080	115.6	88.1 (18.7)	8.2 (5.2)	2.2 (2.1)	0.5 (0.8)	3.3 (1.6)
8 vs 8	65 × 52	3380	211.3	99.9 (7.5)	10.9 (2.6)	2.3 (1.2)	0.4 (0.3)	4.5 (0.8)
	50 × 60	3000	187.5	104.8 (9.6)	12.1 (4.7)	3.0 (1.8)	0.5 (0.6)	5.0 (0.8)
	53 × 40	2120	132.5	58.9 (3.8)	4.4 (1.8)	0.7 (0.6)	0.1 (0.3)	4.0 (1.1)
	35 × 60	2100	131.3	108.2 (8.7)	12.0 (4.3)	3.2 (1.6)	0.5 (0.6)	4.3 (0.7)
	40 × 52	2080	130.0	92.3 (8.2)	9.4 (3.4)	2.5 (1.2)	0.5 (0.4)	4.4 (0.7)
	40 × 50	2000	125.0	96.0 (9.4)	10.2 (2.8)	1.8 (1.2)	0.4 (0.5)	4.6 (0.9)
	40 × 40	1600	100.0	84.6 (8.2)	7.2 (2.6)	1.6 (1.3)	0.2 (0.3)	4.7 (1.0)
8 vs 8 (+1f)	60 × 50	3000	176.5	92.1 (10.0)	10.2 (3.8)	2.6 (1.0)	0.4 (0.5)	2.7 (0.5)
	40 × 60	2400	141.2	94.7 (7.7)	10.9 (2.3)	3.9 (1.7)	1.7 (1.5)	3.3 (0.5)
	40 × 40	1600	94.1	83.5 (10.5)	6.7 (3.0)	1.1 (0.8)	0.1 (0.2)	4.5 (1.0)
	35 × 40	1400	82.4	90.5 (9.0)	6.3 (3.1)	1.2 (1.1)	0.2 (0.5)	4.5 (1.0)
7 vs 7	48 × 51	2448	174.9	99.9 (6.7)	10.8 (4.1)	2.1 (1.0)	0.3 (0.5)	4.0 (0.8)
	53 × 40	2120	151.4	100.8 (3.0)	9.3 (2.7)	2.4 (1.1)	0.5 (0.4)	5.6 (0.9)
	40 × 52	2080	148.6	97.0 (13.2)	9.7 (4.6)	2.3 (1.4)	0.3 (0.3)	4.2 (1.3)
	40 × 50	2000	142.9	94.4 (7.2)	10.3 (4.5)	2.1 (1.9)	0.4 (0.5)	3.9 (0.8)
	38 × 52	1976	141.1	104.2 (9.2)	12.6 (3.7)	2.8 (1.4)	0.5 (0.7)	5.1 (0.8)
	35 × 45	1575	112.5	93.2 (5.8)	7.1 (0.6)	1.3 (0.8)	0.5 (0.7)	3.7 (0.5)
	40 × 25	1000	71.4	85.8 (8.3)	5.5 (2.9)	0.5 (0.5)	0.1 (0.2)	4.1 (0.9)
8 vs 6	40 × 52	2080	148.6	99.0 (7.8)	9.5 (3.0)	1.9 (1.0)	0.2 (0.3)	4.2 (0.7)
6 vs 6	34 × 50	1700	141.7	84.0 (9.4)	9.4 (3.4)	3.2 (2.6)	1.4 (1.5)	3.9 (1.0)
	40 × 40	1600	133.3	93.4 (8.4)	8.1 (2.4)	1.2 (0.9)	0.2 (0.5)	4.9 (0.7)
	40 × 38	1520	126.7	97.3 (6.9)	8.9 (1.8)	1.7 (0.7)	0.4 (0.5)	4.5 (0.6)
	35 × 40	1400	116.7	91.2 (12.6)	7.6 (4.8)	1.1 (1.2)	0.1 (0.3)	4.8 (1.1)
	30 × 35	1050	87.5	82.4 (6.3)	6.0 (2.5)	0.6 (0.6)	0.0 (0.0)	4.6 (1.1)
6 vs 6 (+1f)	46 × 48	2208	169.8	106.6 (9.6)	12.4 (4.0)	2.5 (1.8)	0.9 (1.3)	4.5 (0.9)
	34 × 60	2040	156.9	80.7 (9.8)	8.4 (3.2)	1.9 (1.2)	0.4 (0.3)	3.9 (0.5)
	40 × 40	1600	123.1	91.2 (6.4)	7.3 (3.1)	1.1 (1.4)	0.1 (0.2)	5.0 (1.2)
5 vs 5	44 × 34	1496	149,6	83.8 (9.9)	5.9 (3.1)	1.0 (1.2)	0.4 (0.5)	4.0 (1.4)
	40 × 37	1480	148.0	89.7 (5.7)	8.0 (3.1)	1.6 (1.2)	0.2 (0.3)	4.5 (0.6)
	30 × 34	1020	102.0	94.6 (5.6)	7.6 (2.6)	1.5 (1.2)	0.2 (0.2)	5.1 (1.0)
	25 × 38	950	95.0	97.6 (7.4)	9.6 (2.8)	1.2 (0.9)	0.3 (0.4)	5.7 (1.1)
	30 × 30	900	90.0	84.6 (6.4)	6.9 (2.7)	0.7 (0.4)	0.0 (0.1)	4.4 (0.7)
4 vs 4	40 × 35	1400	175.0	89.1 (11.6)	6.0 (3.7)	0.8 (1.1)	0.1 (0.3)	5.5 (1.9)
	30 × 40	1200	150.0	82.3 (20.3)	9.1 (3.7)	1.6 (1.3)	0.1 (0.3)	4.4 (1.0)
4 vs 4 (+1f)	30 × 35	1050	116.7	110.5 (9.0)	10.6 (4.2)	1.4 (1.8)	0.0 (0.2)	5.9 (1.5)
	30 × 30	900	100.0	101.4 (6.4)	8.2 (3.0)	0.8 (0.8)	0.0 (0.0)	6.6 (1.1)
3 vs 3 (+1f)	25 × 30	750	107,1	128.7 (13.4)	20.8 (6.7)	1.5 (2.0)	0.1 (0.2)	9.9 (1.2)
	15 × 25	375	53.6	81.0 (7.7)	4.0 (2.6)	0.5 (0.6)	0.0 (0.0)	5.0 (1.3)
3 vs 3	20 × 25	500	83.3	102.2 (8.0)	14.3 (4.2)	2.0 (1.7)	0.5 (0.8)	8.2 (1.5)
2 vs 2	20 × 30	600	150	138.3 (9.2)	28.6 (7.5)	6.3 (4.0)	0.3 (0.8)	14.3 (2.5)

The small-sided games are split for the number of players and pitch size (width × length). The total pitch area (m²) and area per player (m² · player) have been calculated. The number of floaters, when required, is reported between bracket (i.e., one floater: +1f; two floaters: +2f). The total pitch area (m²) and area per player (m² · player) have been calculated. Average locomotor demands are reported for total distance (TD), high-speed running (HSR), very high-speed running (VHSR), sprint (SPR) and acceleration/Deceleration (Acc/Dec). Data are reported as mean (SD).