Table 4. Comparison of knee cartilage subregion thickness between recreational runners and sedentary controls (mean ± SD).

Group	Recreational runners (mm)	Sedentary controls (mm)	t value	P value
Femoral medial posterior	1.47±0.18	1.41±0.18	1.076	0.29
Femoral medial central	1.61±0.17	1.47±0.16	2.362	0.02
Femoral medial anterior	1.83±0.18	1.67±0.17	2.593	0.01
Femoral trochlear medial	1.73±0.18	1.59±0.18	2.219	0.03
Femoral trochlear central	2.34±0.30	2.16±0.33	1.561	0.12
Femoral trochlear lateral	1.98±0.22	1.89±0.26	1.052	0.30
Femoral lateral posterior	1.62±0.14	1.57±0.17	0.937	0.35
Femoral lateral central	1.91±0.17	1.72±0.26	2.397	0.02
Femoral lateral anterior	1.60±0.15	1.50±0.20	1.562	0.12
Patellar lateral inferior	1.66±0.20	1.77±0.22	−1.531	0.13
Patellar lateral central	3.04±0.33	3.13±0.43	−0.678	0.50
Patellar lateral superior	2.11±0.27	2.06±0.23	0.639	0.52
Patellar medial inferior	1.75±0.19	1.82±0.30	−0.713	0.48
Patellar medial central	2.69±0.31	2.72±0.47	−0.205	0.83
Patellar medial superior	1.76±0.19	1.74±0.26	0.271	0.78
Tibial lateral posterior	1.85±0.21	1.76±0.24	1.175	0.24
Tibial lateral central	2.63±0.26	2.62±0.18	0.12	0.90
Tibial lateral anterior	1.81±0.15	1.83±0.19	−0.311	0.75
Tibial medial posterior	1.43±0.20	1.32±0.15	1.763	0.08
Tibial medial central	1.91±0.19	1.79±0.16	1.833	0.07
Tibial medial anterior	1.56±0.12	1.39±0.14	3.564	0.001

SD, standard deviation.