Table 4.

(a) 3D peak strain across age deciles. (b) Age adjusted 3D peak strain rates and results of linear regression analyses on the relationship between age and strain rate

(a)
	Strain by age decile (%)
	20–29 years	30–39 years	40–49 years	50–59 years	60–69 years
GCS	− 16.9 ± 2.1	− 16.8 ± 2.3	− 16.4 ± 2.4	− 18.2 ± 2.0	− 19.7 ± 2.6
GLS	− 14.8 ± 2.1	− 13.4 ± 2.3	− 14.0 ± 2.8	− 14.9 ± 2.2	− 16.2 ± 2.7
GRS	45.9 ± 12.0	43.9 ± 9.8	42.4 ± 10.8	47.9 ± 9.0	57.5 ± 14.7

(b)
	Strain rate by age decile (1/s)					Statistical analyses
	20–29 years	30–39 years	40–49 years	50–59 years	60–69 years	R	R2	β	P
GCS S’	− 0.87 ± 0.13	− 0.86 ± 0.19	− 0.90 ± 0.23	− 0.92 ± 0.18	− 1.03 ± 0.18	0.26	0.07	0.003	0.009
GCS E’	1.06 ± 0.19	0.98 ± 0.24	0.95 ± 0.22	0.91 ± 0.24	0.88 ± 0.20	− 0.26	0.07	− 0.004	0.008
GCS A’	0.36 ± 0.09	0.37 ± 0.11	0.44 ± 0.08	0.55 ± 0.12	0.69 ± 0.14	0.74	0.55	0.008	< 0.001
GRS S’	2.79 ± 0.84	2.63 ± 0.95	2.61 ± 0.96	2.89 ± 0.72	3.80 ± 1.51	0.29	0.09	0.023	0.003
GRS E’	− 3.30 ± 1.18	− 2.85 ± 0.90	− 2.85 ± 1.24	− 3.06 ± 0.88	− 3.16 ± 1.02	− 0.12	0.00	− 0.001	0.906
GRS A’	− 0.50 ± 0.12	− 0.52 ± 0.17	− 0.62 ± 0.16	− 0.79 ± 0.23	− 0.97 ± 0.29	0.66	0.43	0.012	< 0.001
GLS S’	− 0.74 ± 0.12	− 0.69 ± 0.16	− 0.77 ± 0.20	− 0.76 ± 0.15	− 0.82 ± 0.18	0.26	0.07	0.005	0.009
GLS E’	0.98 ± 0.26	0.81 ± 0.24	0.90 ± 0.31	0.73 ± 0.16	0.74 ± 0.17	− 0.30	0.01	− 0.005	0.002
GLS A’	0.34 ± 0.09	0.34 ± 0.08	0.40 ± 0.09	0.49 ± 0.10	0.59 ± 0.10	0.69	0.47	0.007	< 0.001

P values < 0.05 are highlighted in bold