Human Variation in High-Altitude
H igh-altitude environments have adverse effects on humans and the way their bodies function normally. The change in the barometric pressure causes a decrease in the amount of oxygen and can lead to hypobaric hypoxia which is an imbalance of oxygen availability to the tissue and can cause severe psychological and physiological dysfunction in humans. Sustained exposure to hypoxia can have very negative effects on body weight, muscle structure, exercise capacity, mental functioning, and sleep quality. Long exposure to high-altitude can lead to a decrease in muscle fiber density. It can also cause diaphragm and abdominal muscle contractile fatigue and can result in limitations in exercise high-altitude. High-altitude of over 3,000 m will produce physiological disorders and changes in moods as well as cognitive and motor performance. High-altitude can also affect anxiety and mental efficiency as well as short-term memory. Being at high-altitudes will reduce the amount of ox...