Effects of exercise on my blood pressure
August 28, 2008 by Andy · 2 Comments
About a year ago, I decided to get into shape, and lose some weight. One of the side effects of losing weight and eating healthily was that my blood pressure dropped from around the 140/90 area down to 115/70 and below. During the last year I have done a lot of weight training and aerobic exercise and have lost about 12 Kilograms in weight (that’s nett weight loss, since I have put on a considerable amount of muscle as well, so consider myself to by quite fit.
In this experiment, I wanted to see how exercise affected my blood pressure.
The experiment was simple.
I would do 7 minutes of weight training while seated (this involved shoulder presses). Immediately afterwards I took my blood pressure twice, with three minutes in between. I then did another 7 minutes of weights, but this time standing up (bicep curls). After this 7 minutes I took my blood pressure immediately, and for several minutes afterwards.
Here are my results:
|
Time
(minutes after exercise) |
Upper
(systolic) |
Lower
(diastolic) |
Heart Rate
(beats per min) |
|
Before Exercise
|
117
|
69
|
74
|
|
113
|
68
|
75
|
|
|
112
|
66
|
73
|
|
|
7 Minutes Exercise (seated)
|
|||
|
0
|
123
|
79
|
118
|
|
3
|
118
|
76
|
98
|
|
7 Minutes Exercise (standing)
|
|||
|
0
|
117
|
72
|
128
|
|
3
|
123
|
78
|
106
|
|
6
|
122
|
76
|
101
|
|
9
|
122
|
76
|
95
|
|
12
|
120
|
72
|
94
|
Here are my results in Graphical format:
Note that the arrows in the graph represent 7 minutes of exercise.
The immediate thing to notice is the obvious. After exercise, my heart rate increases. Heart rate increases to increase the flow of blood around the body so that increased oxygen uptake and increased release of carbon dioxide from the tissues can take place.
As for blood pressure, there are slight increases in both diastolic (lower) and systolic pressure (upper) pressures. From rest, until the first measurement after the first 7 minutes of exercise, the systolic increase by 11 mmHg. That represents a 9.8% increase in systolic pressure over the resting pressure. The same measurement for diastolic shows the pressure going up 13 mmHg, representing an increase of 19.7% increase over the resting diastolic pressure. It would therefore seem that in my case, both diastolic and systolic increase after exercise, though diastolic increase more. Remember that the diastolic pressure is the pressure in my blood vessels BETWEEN heart beats, so my system is under higher pressure when at “rest”, after exercise.
12 minutes after exercise finished both blood pressure and heart rate was still elevated, so it appears that in my case at least, exercise did increase blood pressure, and that the increase lasted for some time after exercise finished, as did my elevated heart rate.
