1. SPORTNUTRITION
ENVIRONMENT CHALLENGES
FOR ATHELETES
PRESENTED BY
SUGANESWARANS

2. ENVIRONMENTALFACTORS
Temperature Humidity Pollution Altitude Wind

3. TEMPERATURE
• Affect athletic performance due to the changes in the core
temperature of an athlete in action.
• Temperature increases cause high levels of fluid loss.
• Warm temp. Increased rate of perspiration and dehydration.
• Precooling strategies help to increase athletic performance.
• A humid environment slows down the evaporation of sweat which
leads to impaired thermoregulation.
• A dry and Cold environment affects the pulmonary system by
causing bronchospasm and difficulty breathing.

4. POLLUTION
• Pollutants like Carbon dioxide, Carbon monoxide, Nitrogen
oxide, ozone, etc.,
• Air pollutants affect pulmonary and cardiovascular functions.
• Carbon monoxide, can bind with hemoglobin and impairs the
oxygen supply from blood to muscles.
• Avoid practicing near roadside or traffic instead practice in rural
park or in practicing venue.
• Practice morning or evening to avoid pollution.

5. ALTITUDE
• Aerobic athlete performance are determinant with altitude.
• Con.oxygen remains the same in higher altitude, the partial
pressure of oxygen decreases.
• Drop pO2 with altitude rises a hypobaric and hypoxic environment
and lowers barometric pressure and lower O2 transport to tissue.
• For prolonged period this could cause certain changes like
increased ventilation and heart rate.
• Acclimatization - increased O2 carrying capacity, Higher Hb level,
higher RBC production. Process takes 2-3 weeks or more.

6. WIND
• Wind is reported to be advantage to sports like sprints.
• Wind direction is the important characteristic that to be monitored
during a sprint.
• Wind direction affects on different running lanes vary.
• wind conditions are velocity determinant which results in slower
attainment of maximum velocity than in windless conditions.
• Wind in cold environment - excessive loss of heat
• Wind in humid environment - higher power output and faster
finishing time.

7. THANKYOU