Figure 1

Heart rate, blood pressure, and cardiac index during baseline and at maximum exercise in boys and girls. Recordings of heart rate, blood pressure, and cardiac index during baseline and at maximum exercise in female (♀, N = 24; cardiac index measurements N = 23) and male (♂, N = 27; cardiac index measurements N = 26) subjects. During exercise only systolic blood pressure was recorded. *) denotes statistical significant difference (p < 0.05 by unpaired t-test with correction for multiple comparisons) between female and male subjects with regard to resting heart rate, resting and maximum systolic blood pressure, and maximum cardiac index.