Table 8. Communalities (h) and factor loadings of the rotated principal components (N = 141).

time frame	PA		components
		h2	1	2	3	4
previous 3 weeks	end low I	.66	.25	.2	-.02	.74
	end mod I	.65	.67	.14	-.12	.40
	end high I	.71	.81	.04	.25	.03
	speed/strength	.80	.20	.02	.87	-.01
	transport	.74	.09	.82	.18	.19
previous 3 years	end low I	.80	.18	.13	.03	.87
	end mod I	.71	.74	.01	-.01	.41
	end high I	.68	.76	.06	.29	.13
	speed/strength	.84	.17	.07	.90	.03
	transport	.76	.11	.84	.08	.21
20-40 years	end low I	.84	.16	.15	.01	.89
	end mod I	.72	.70	.15	-.03	.45
	end high I	.82	.87	.03	.25	.09
	speed/strength	.87	.20	.22	.88	-.04
	transport	.83	.05	.88	.16	.18
youth	end low I	.52	.22	.41	.09	.54
	end mod I	.55	.55	.42	-.08	.27
	end high I	.55	.63	.35	.17	.02
	speed/strength	.64	-.03	.08	.79	.03
	transport	.64	.14	.79	-.01	.05
	eigenvalue		7.24	3.15	2.52	1.41
	% of variance		22.40	17.10	16.49	15.65
	α		.90	.89	.90	.84

PA: physical activity; I: intensity; end: endurance; mod: moderate α: internal consistency.