Ethnic variations in psychological performance under altitude stress

Area of Science:

• Physiology
• Human Adaptation
• Altitude Medicine

Background:

• High altitude environments pose significant physiological challenges.
• Ethnic variations in human adaptation to extreme environments are not fully understood.

Purpose of the Study:

• To compare the sea-level performance of Gorkha, Madrasi, and Rajput ethnic groups at 4,000m altitude.
• To investigate ethnic differences in psychological and psychomotor responses to prolonged altitude exposure.

Main Methods:

• 120 subjects (40 each from Gorkha, Madrasi, Rajput groups) were assessed at sea level and after 10 months at 4,000m.
• Evaluated parameters included concentration, eye-hand coordination, anxiety, and depression.
• Social interaction was also monitored to assess altitude stress impact.

Main Results:

• All three ethnic groups showed a uniform decline in eye-hand coordination and social interaction scores at altitude.
• Concentration, anxiety, and depression scores varied significantly among the groups.
• Gorkhas exhibited better toleration to altitude stress compared to Madrasi and Rajput groups.

Conclusions:

• Ethnic background plays a role in the differential tolerance to high altitude stress.
• Gorkhas' superior performance may be attributed to climatic similarities between their native habitat and the high-altitude environment.
• Further research is needed to elucidate the specific physiological and genetic factors contributing to altitude adaptation in different ethnic groups.