The impact of COVID-19 lockdown on soccer positional and physical demands in the Spanish La Liga

Figures & data

Table 1. Comparative analysis of positional and physical demands between pre-lockdown and post-lockdown.

Variables	Offensive Convex Hull		Defensive Convex Hull		Offensive Width		Offensive Length		Defensive Width		Defensive Length		Total Distance (mt/m)		High Speed Running (mt/m)
	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p
Intercept*	1039.45 (18.84)	<0.01	765.04 (8.12)	<0.01	45.15 (0.62)	<0.01	34.1 (.16)	<0.01	35.55 (.20)	<0.01	31.45 (0.14)	0.06	110.26 (.38)	<0.01	15.98 (.09)	<0.01
Diff Post Covid	−14.21 (7.58)	0.06	−17.95 (5.30)	<0.01	.53 (0.23)	0.02	−.65 (.11)	<0.01	.15 (.03)	0.21	−.66 (.17)	0.03	−2.87 (.16)	<0.01	−.41 (.03)	<0.01

Note. Coeff = Coefficient; SE = Standard Error; Intercept* = mean values of matches pre-COVID; Diff post Covid = Difference values between pre- and post-covid matches.

Table 2. Comparative analysis of positional and physical demands between pre-lockdown and post-lockdown according to match location.

Variables	Offensive Convex Hull		Defensive Convex Hull		Offensive Width		Offensive Length		Defensive Width		Defensive Length		Total Distance (mt/m)		High Speed Running (mt/m)
	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	p	Coeff (SE)	P	Coeff (SE)	p
Intercept*	1048.27 (19.24)	<0.01	772.25 (8.59)	<0.01	45.37 (.62)	<0.01	34.26 (.17)	<0.01	36.60 (.21)	<0.01	31.46 (.14)	0.07	111.01(.49)	<0.01	16.14 (.11)	<0.01
Diff Post Covid Home	−14.57 (10.66)	0.16	−19.75 (7.45)	<0.01	.67 (.33)	0.04	−.76 (.14)	<0.01	.01 (.17)	0.21	−.65 (.16)	<0.01	−3.52(.54)	<0.01	−.75(.13)	<0.01
Pre Covid Home- Pre Away Matches	−17.64 (7.97)	0.02	−14.43 (5.51)	<0.01	−.43 (.25)	0.08	−.34 (.11)	<0.01	−.10 (.12)	0.44	−.01 (.18)	0.94	−.40(.18)	0.03	−.09(.04)	0.06
Post*Away	.64 (15.11)	0.96	3.59(10.12)	0.73	−.29 (.47)	0.52	.22 (.21)	0.29	.30 (.24)	0.21	−.01 (.34)	0.98	.43 (.34)	0.21	.21(.18)	0.01

Note. Coeff = Coefficient; SE = Standard Error; Intercept* = mean values of matches pre-COVID played at home; Diff post Covid Home = Difference values between pre- and post-covid matches played at home.

Figure 1. Offensive and defensive convex hull during the pre- and post-lockdown periods.

* significantly different from the other period (p < 0.05).