The effects of marihuana on specific cardiovascular parameters during exercise

[摘要] The study was conducted to exmine potential long termef--ectu of marihuana upon the cardiovascular system before,duling, and after submaximal exercise. TRe following specifics=diovascular parameters were used to compare long termmarihuana users to non-users,1) Resting heart r a t e and blood pressure2) Exercise heart rate, blood pressure, and ECGcha~ges3) Immediate post-exercise heart rate, blood pressure,and ECG changes a t two, four, and six minuteintervals4) Time on the treadmill to reach the exercise levelof the target heart rate,The two samples consisted of 23 computer matched pairsBekwaen the ages of 17 and 21, The subjects were solicitedfrm the Personal Health and General Psychology classes offeredi n the curriculum at: the University of Wisconsin-La Crosse,The screening and testing procedures were conducted over ag e ~ i o de f two marther.;;Phe statiatieal. male1 used i n t h i s study was the pairedt @eat. The five percent level of confidence was the c r i t i c a ls t ~ t i s t i c a lv alue ehoeen f o r acceptance or r e j e c t i o n of thenuLL hypathesls,Significant differences between the marihuana users andnen-users were found i n heart rate and d i a s t o l i c blood pressureduring the post-exercise periodo The users;; heart rate wassignificantly lower than the non-users a t four minutes pastexercise. A t four and six minutes post exercise the users;;diastolic bl-d prsss8=e was significantly higher than thenon-users. There were no signifacant long term effects ofmarihuana on the resting cardiovascular parameters. The longterm use of marihuana does not r e s u l t i n any apparent ECGchanges.

[发布机构] University of Wisconsin

[效力级别] Marijuana - Physiological effect

[关键词] Heart beat;Marijuana - Physiological effect