Diurnal variation in symptom-limited exercise test responses six weeks after XXXX .

@entity1 @entity308 @entity854 @entity951 @entity583 @entity943
Diurnal variation of exercise test responses occurring during symptom-limited treadmill exercise testing was investigated in 45 @entity1 six weeks after @entity583 . Each @entity1 was exercised using a Naughton protocol before 8 a.m. and after 6 p.m. on the same day. No complications arose. There was no significant diurnal variation of any of the analysed exercise induced @entity854 ( @entity951 or ST segment shift) or of the mean maximal exercise durations and achieved workloads. Mean maximal heart rates and heart rate-systolic blood pressure double products were similar in both tests. ST segment @entity308 occurred in 21 @entity1 and was totally consistent in both tests. An abnormal blood pressure response occurred in 14 @entity1 in the morning test and in 18 @entity1 in the evening test but this discordance did not reach statistical significance. Similarly there was no significant diurnal variation in exercise induced @entity943 , although only three of the 11 @entity1 in whom they occurred had this abnormality on both tests. We conclude that in this group of @entity1 , no significant diurnal variation was observed in either exercise induced @entity854 or in exercise haemodynamics during symptom-limited exercise tests performed six weeks after @entity583 . These data increase the confidence in clinical management decisions based on the results of this test.
