Physical Education

Effect of exercises on muscular system   the size of muscle fibers increases  amount of protein increases   capillary density per fiber increases   amount of connective  tissue increases   blood supply in the muscles increases   myoglobin content increases   oxidation(breakdown) of carbohydrates and fat increases   number of mitochondria increases   amount of glycogen store increases   ATP_PC and glycolytic capacity increases   total and relative body fay decreases   fat free weight is increased   flexibility  increases  due to hypertrophy of muscles, muscle strength and muscular endurance increases   Effect of exercises on respiratory system lung volume increases as a result of increase in vital capacity breathing frequency is decreased in trained individuals  maximum minute ventilation i...

HUNGR and MALNUTRITION If one doesn’t eat enough food to fill current physiological needs — they feel hunger. Hunger can be temporary, such as not having enough to eat for a meal or a day, or can be long lasting when the person does not get enough to eat to maintain his or her physical needs over many days, weeks, months or years. When a person has hunger for a sustained period of time, he or she can develop malnutrition, either mild or severe, depending on one’s body needs and food intake. For families around the world, hunger means more than going to bed with an empty stomach. Getting the right kind of food at different stages of life can mean the difference between becoming a healthy adult — or not. Growing up malnourished can inhibit development, make it hard to focus in school, and later contribute to complications during pregnancy. Right now, there is enough food in the world to make sure that every single person on the planet gets the food they need...