Cardiovascular Exercise Safety Precautions (Part 1)
By Chad Tackett
Cardiovascular exercise has received a lot of attention over the last 15 years as the centerpiece of physical fitness, weight management, and cardiorespiratory (heart and lung) health. The terms cardiovascular exercise, cardiorespiratory fitness and aerobic exercise are all synonymous. This kind of exercise requires large muscle movement over a sustained period of time, elevating your heart rate to at least 50% of maximum level. Examples include walking, jogging, biking, swimming, and any other repetitious activity that can be performed over an extended period of time.

Cardiovascular exercise has numerous benefits. They include a decreased blood pressure, increased HDL (good) cholesterol (high-density lipoproteins responsible for removing LDL (bad) cholesterol from the cells in the arteries and transporting it back to the liver for removal from the body), decreased LDL cholesterol, decreased body fat, decreased glucose-stimulated insulin secretion (this increases capillary density and blood flow to active muscles), increased heart and lung function and efficiency, and decreased anxiety, tension, and depression.

All of these benefits combine to help lower your risk of cardiovascular disease by reducing risk factors like obesity, hypertension, and high blood cholesterol. In addition, cardiovascular exercise serves as a foundation for the activities of daily living, sports, and other outdoor activities. Activities such as tennis, golf, skiing, dancing, basketball, volleyball, boxing, hiking, and strength training programs all benefit from cardiovascular exercise. Your enjoyment of day-to-day and physical activities will also greatly benefit because you will have more stamina, less fatigue and less risk of injury. However, there are several precautions you should take to help maximize exercise safety.

Post-meal Exercise
Cardiovascular exercise soon after a full meal can compromise oxygen and nutrient delivery to the working muscles, and cause gastric discomfort. Thus, you should wait at least 60-90 minutes after a full meal before engaging in cardiovascular exercise. The level of exercise and the amount and type of food consumed affect the time required for digestion to be completed before beginning exercise. The higher the exercise intensity and/or the greater the amount food consumed, the longer the time should be between eating and exercising