As a future tennis player (if all goes well) I can say that Tennis can be played indoors or outdoors.
A top-class tennis match may last over 2 hours and players require high levels of aerobic fitness. A player's average heart rate reaches 60-70 per cent of its maximum level and a burst of maximum activity occurs each time a player contests a point. A point lasts about 12-15 seconds and there may be more than 500 points contested during a match. So, tennis can be a very demanding sport but it can also be played at many levels of intensity, making it very popular. As long as you can find someone at about the same level to play with, you can play tennis at your own pace.
Doubles is less strenuous than singles (during a doubles match, average heart rate is only about 40 per cent maximum). This makes tennis an activity which can be enjoyed by people of all ages and levels of fitness. Playing tennis involves bending, twisting, stretching, leaping, and running. These movements keep the shoulders, arms, and legs supple and strong, and help to develop good posture and balance. It also improves aerobic fitness. The movements, however, tend to lead to injuries in the shoulder, lower back, and knee, especially if there are muscular weaknesses and imbalances (see tennis elbow). Injuries are more common in those who are in poor physical condition and those who do not warm-up ade-quately. Rehabilitation from upper-body injuries may include windmill exercises (see wincmills) and 'anchored racquet' exercises in which an elastic band is attached to the racquet to provide controlled resistance for normal stroke movements.
Flexibility and mobility exercises are essential for players of all standards so that they can be adequately prepared for dynamic activity during a game. It is also important to do exercises using both sides of the body to counteract the one-sided development of body musculature. A condition nicknamed 'King Kong' arm is common in players who do not take this advice. The dominant arm becomes overdeveloped because of the asymmetrical increase in size of the dominant shoulder girdle. This affects body posture and may result in stresses and strains causing injuries in other parts of the body. Tennis involves a considerable amount of side-to-side movement. To minimize injuries, tennis shoes should have a strong heel cup and heel counter. Also, the forefoot should be made of sturdy material to cope with the dragging of the trail leg during low ground shots.
Both. There is indoor soccer and outdoor soccer. They have different rules though and the fields are different.
soccer can be played in both: outdoor and indoor
it is played both inside and outside. if it is played inside, then they call the stadium a dome. most football fields are outside
Some NFL stadiums are enclosed, such as the new Cowboys stadium.
So the answer is "yes", at least part of the time.
Most stadiums in the NFL are NOT enclosed, though.
there is air in a football.
air is in the football
The pressure inside a football is caused by the air particles inside the ball being compressed by the addition of increasing amounts of air. The standard PSI of a professional football is 13 psi (Pounds per square inch).
the inside of a football
Inside Temple Football - 2010 was released on: USA: 2010 (Philadelphia, Pennsylvania)
Inside Line Backer
25 football fields can fit inside the pentagon
no u tool
A lining, then air.