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56Lactic Acid & Exercise
When exercise becomes very intense, more energy is produced anaerobically, lactic acid begins to accumulate in the blood, and carbon dioxide production increases along with the rate and depth of breathing....
0 comments54The Risk of Physical Activity Before Starting An Exercise Program
The risks of activity and fitness range from minor musculoskeletal problems to major coronary events. The risks are low for low-intensity and moderate-duration activity. Overuse injuries are more common when...
0 comments54The Exercise Electrocardiogram
The variability in maximal heart rate, as defined by a statistic called the standard deviation (SD), is plus or minus 12 bpm: 68 percent of all cases fall within plus or minus one SD, 95 percent within plus...
0 comments51Should You Get Checked Before Starting An Exercise Program?
The coronary bypass is an operation to repair one or more of a body's narrowed coronary arteries. A small blood vessel is taken from the leg or chest and used to bypass the section of severely narrowed...
0 comments49Are You A Runner?
The 1.5-mile (2.4-kilometer) running test requires a near-maximal effort. If you've been inactive, precede the test with 6 to 8 weeks of training. People over the age of 45 should consider a medical...
0 comments49Special Considerations Before Starting An Exercise Program
Each disability carries its own restrictions, but each has potential as well. People with disabilities participate and compete all the way up to international competitions, but only after establishing...
0 comments49Understanding Aerobic Fitness
Aerobic fitness is synonymous with endurance or stamina. It describes the ability part inherited and part trained, to persevere or persist in strenuous or prolonged endeavors. Those who pursue fitness earn...
1 comment48Aerobic Fitness Field Tests
Moderate activity leads to above-average fitness and substantial health benefits; training leads to a higher level of fitness and extrahealth benefits; and prolonged, systematic training helps you achieve...
0 comments50Where, When & How To Get In Shape!
An upright posture conserves energy. Run or walk with your back comfortably straight, your head up, and your shoulders relaxed. When jogging, bend your arms, hold your hands in a comfortable position, and...
0 comments51What To Wear When You Exercise?
Nothing is more important to your enjoyment than comfortable shoes, so don't economize when you purchase footwear. Go to a reputable sporting goods dealer and seek advice from a knowledgeable salesperson....
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