Tuesday, February 24, 2009
Bow and Arrow: the Main Equipments You Must Secure to be Able to Play Archery Posted: Feb 12th, 2009 | Comments: 0 | Views: 12
Archery has become one of the most well-loved sports. It is actually the art of shooting. But unlike with several sports that you need a ball to do the shooting and all, with this sport you won't be needing a ball but instead an arrow.
The main equipments one needs to be able to play Archery include a bow and an arrow. Generally, a bow is a weapon that projects an arrow while an arrow is a slender, straight pointed projectile made to be shot from a bow; usually with feathers at the shaft end.
Basically, there are two main types of bows. First type can be drawn by directly pulling the string and second type still needs a mechanism for its string to be pulled. Each type then can be further divided based on variations in the limb construction method.
A lot of people prefer using bows that can be drawn by directly pulling the string than bows that still need a mechanism for its string to be pulled. Mechanically drawn bows usually have other mounting or a stock such as the crossbow. Typically, they are not confined by the strength or power of one archer.
Arrows on the other hand, come in types too. Basically, arrows can be classified in terms of the material used. Normally, material used for the shaft is the determining factor. Materials often used for the shaft include aluminum alloy, solid wood, fiberglass, carbon fiber or carbon/alloy composite.
Arrows with shaft made of wood are known for being highly prone to distortion. Arrows with shaft made of fiberglass although are more easily produced to unvarying specifications are actually breakable. Arrows with shaft made of aluminum are known for being perfectly straight, durable, and efficient to use and so became the most favorite type some time in the 20th century. Arrows with shaft made of carbon fiber are very light and in the past have exceeded popularity of arrows with shaft made of aluminum. Finally, arrows with shaft made of carbon/alloy composite are more effective in projecting an arrow and so became very popular at Olympic Events.
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Wednesday, February 18, 2009
Aerobic Exercise for Weight Loss Can be Fun
The word aerobic literally means "with oxygen" or "in the presence of oxygen." Aerobic exercise is any activity that uses large muscle groups, can be maintained continuously for a long period of time and is rhythmic in nature. Aerobic exercises utilize oxygen as the major fuel for sustaining activity for relatively long periods.
In general, aerobic exercises are those activities that require large muscle work, elevate the heart rate to between 60 percent and 80 percent of maximal heart rate, are continuous in nature and are of 15 to 60 minutes in duration. An aerobically fit individual can work longer, more vigorously and achieve a quicker recovery at the end of the aerobic session.
Aerobic exercises fall in two categories:
Low to Moderate Impact aerobics – These include walking, swimming, stair climbing, step classes, light water aerobics, rowing and cross-country skiing. Nearly anyone in reasonable health can engage in some low- to moderate-impact exercise. Brisk walking burns more calories than jogging for the same distance because it takes more time to walk than jog that distance and poses less risk for injury to muscle and bone.
High-Impact aerobics – Activities that belong to this group include running, dance exercise, tennis, racquetball and squash. High-impact aerobics should be performed on alternate days. People who are overweight, elderly, out of condition or have an injury or other medical problem should do them even less frequently and only with clearance from their doctor.
Here are some of the many aerobic exercises you can do and because of the variety you have to choose from, it can not only take the bordum out of doing it, it can make doing it downright fun as well.
1. Walking
Walking is a popular form of exercise because it requires little in terms of equipment or facilities. Walking an extra 20 minutes each day will burn off 7 pounds of body fat per year. Longer, moderately-paced daily walks are best for losing weight.
2. Jogging/Running
In jogging or running, an individual is able to cover greater distances in a shorter period of time. Therefore, greater numbers of calories can be burned per time spent.
3. Choreographed Aerobic Exercise
Choreographed aerobic dance is a very popular form of exercise throughout the world. Aerobic dance helps in toning up the muscles of the body and many people find it fun to do as well.
4. Step Aerobics
Step aerobics incorporates the use of a step or bench typically about one foot wide and three feet long and about six inches high. Instructors use many moves that require participants to step up and down from the platform. This way, the activity will not be boring and tiring, but will be lively and motivating.
5. Water Aerobics
Water aerobics incorporates a variety of movements from both swimming and land aerobics to develop vigorous routines that are aerobic in nature. It utilizes the resistance to movement that water creates to elevate heart rates and also helps you if balancing yourself on land is difficult. It is a good way to lose weight.
6. Swimming
Swimming is a very popular form of regular exercise. Due to the resistance of water, the amount of energy required to swim a certain distance is greater than that needed to run or walk the same distance. In other words, swimming can burn more calories than running per time spent.
7. Stationary Cycling/Bicycling
Stationary cycling or bicycling are excellent forms of aerobic exercise when done continuously. Like swimming, cycling is a non weight bearing activity that builds muscular endurance and strength and improved flexibility of selected muscles of the legs and thighs.
8. Jumping Rope
Jumping rope can be a great aerobic workout as long as it is performed at a slow to moderate pace and is done continuously for a relatively long period of time (15 minutes or more).
The key to effective weight loss is through use of a healthy exercise program which is performed on a regular basis while following a healthy dieting & nutritional plan. Aerobic exercises are most popular group exercise in Cities of UK. Aerobic exercise is good for weight loss because it uses more calories than other activities and helps raise your metabolic rate.
This helps your body burn calories at a faster rate. It is an effective way to lose fat only if you are motivated enough to do it frequently. Aerobics only burns fat during the workout itself. So if you want encouraging results you need to be able to exercise daily and for longer periods using minimum Exercise Equipment
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