The response of systolic blood pressure (SBP) to pedalling exercise was studied in 32 healthy young men. The subjects performed the exercise at different intensities for 3 min using an incremental loading method. The first work load was 30W and increased by 30W until the heart rate (HR) reached about 170 bpm. SBP at HR 100. 160 bpm (SBP@HR 100-160) was calculated from the cubic regression equation in each subject. Mean SBP and SEM at HR 100, 110, 120, 130, 140, 150, 160 were 143.9 (2.49), 152.9 (2.79), 161.6 (3.02), 170.0 (3.16), 177.8 (3.25), 184.5 (3.34), and 189.7 (3.45) mmHg, respectively. However, the rate of elevation of SBP was zero at HR 175 bpm, which was calculated from the cubic regression equation. This may indicate that SBP is inhibited by baroreceptors and other factors at HR above 170 bpm. There were no significant relationships between SBPs@HR 100-160 and indices of aerobic capacity such as maximal oxygen consumption or PWC 170. Double product (DP) as an index of oxygen consumption by cardiac muscle increased with HR without any reduction in its rate of elevation during exercise.

The aim of this study was to evaluate the association between a number of variables and the smokingbehavior of students at 2 medical and 4 nursing schools. Multivariate analysis was applied to clarify theassociation between the Brinkman index and 12 other independent variables.
The study population consisted of 1, 207 medical and 682 nursing students in Japan.
1) 35.4% of medical students (1-6th grades), 12.5% of nursing students and 28.7% of medical students (1-3rd grades) smoked. Medical students in the 5th or 6th grade smoked more frequently than the otherstudents.
2) Smokers in medical school and those giving up smoking in nursing school had more knowledge aboutsmoking and its physical effects than the others.
3) Multiple regression analysis showed that the coefficients of determination for the Brinkman indiceswere 0.197 in medical school (1-6th grades), 0.055 in nursing school and 0.106 in medical schools (1-3rd grades). The main independent variables were age, sex and maternal smoking history.