Table 1

 Cardiovascular data for the cohort before and after a game of rugby or football

VariableBeforeAfter24 hours after
Data are mean (SD).
*Significantly different from the value immediately after the game, p<0.05.
SV, Stroke volume; EF, ejection fraction; sBP/ESV, end systolic pressure/volume ratio; LVPWs, left ventricular posterior wall thickness in systole; E, early diastolic filling velocity; A, atrial diastolic filling velocity; E:A, ratio of early and atrial filling velocities; HR, heart rate; LVIDd, left ventricular internal dimension at end diastole; sBP, systolic blood pressure; LVMWS, left ventricular meridional wall stress; cTnT, cardiac troponin T.
Systolic function
    SV (ml/beat)91 (26)91 (36)90 (35)
    EF (%)71 (8)70 (9)71 (7)
    sBP/ESV (mm Hg/ml)4.2 (1.8)3.8 (1.9)4.1 (1.6)
    LVPWs (cm)1.35 (0.17)1.30 (0.14)1.32 (0.16)
Diastolic function
    E (cm/s)79 (11)77 (6)84 (7)*
    A (cm/s)40 (8)*53 (12)43 (6)*
    E:A2.0 (0.4)*1.5 (0.4)2.0 (0.4)*
Loading
    HR (beats/min)57 (7)*80 (11)59 (7)*
    LVIDd (mm)50 (5)50 (6)50 (6)
    sBP (mm Hg)131 (3)*122 (3)128 (4)*
    LVMWS (g/cm)110 (29)106 (25)108 (20)
Cardiac troponin
    cTnT (μg/l)0.00 (0.0)0.00 (0.0)0.00 (0.0)