Table 2.

Global cartilage mean T2 values by knee laterality and sex

		N	T2 rest (ms)†	T2 21 k (ms)†	T2 control (ms)†	Difference rest → 21 k			Difference rest → control			PRI
						p value	(ms)†	(%)†	p value	(ms)†	(%)†
Total T2		57	43.1 ± 2.6	42.2 ± 2.2	43.1 ± 2.7	< 0.001	− 0.9 ± 1.1	− 2.0 ± 2.5	~ 1	0.1 ± 1.4	0.2 ± 3.2	1.0
Laterality	Left	30	42.8 ± 2.8	41.9 ± 2.2	42.5 ± 2.7	0.002	− 0.9 ± 1.3	− 2.0 ± 3.0	0.847	− 0.3 ± 1.4	− 0.6 ± 3.4	0.8
	Right	27	43.4 ± 2.3	42.5 ± 2.2	43.8 ± 2.5	< 0.001	− 0.9 ± 0.8	− 2.1 ± 1.7	0.181	0.4 ± 1.2	1.0 ± 2.7	1.2
Sex	Male	42	43.6 ± 2.4	42.7 ± 2.0	43.7 ± 2.4	< 0.001	− 0.9 ± 1.0	− 2.0 ± 2.4	~ 1	0.0 ± 1.1	0.1 ± 2.5	1.1
	Female	15	41.5 ± 2.5	40.6 ± 1.9	41.6 ± 3.1	0.033	− 0.9 ± 1.2	− 2.1 ± 2.7	~ 1	0.1 ± 2.0	0.4 ± 4.7	1.1

N – number of samples (KAC slices); † - mean ± standard deviation; Difference Rest → 21k: T2 value loss in milliseconds caused by half-marathon running. Difference Rest → Control: T2 value recovery to baseline levels in milliseconds; PRI - Proportional Recovery Index. Detailed Information on ANOVA repeated measures statistics is given in supplementary table in Online Resource 1