Weight Loss, Rectal Temperature and Heart Rates Following the 1984 Boston Marathron,
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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This report summarizes the physiological changes that occurred in runners following the 1984 Boston Marathon. The marathon took place under cool and rainy weather conditions WBGT range 6.5-10.5. Subjects for this study consisted of 57 males and 10 females. Their average age was 40.5 years range 22-61 years. Average marathon pace was 219.1 mmin X time 3 hrs 12 min 36 sec. During the race, these runners drank an average of 581 mls. of fluid. As a result of running a marathon, heart rate increased from 61.3 btsmin to 91.2 btsminute body weight decreased from 67.3 kg. to 65.7 kg., and rectal temperature T sub Rewas not significantly changed. Post-heart rate and T sub Re were affected by how soon after finishing the race an individual was measured. Runners who reported to the post-test site soonest tended to be younger and faster than those reporting later. Age and average weekly mileage correlated significantly with mean marathon pace. Our results with heart rate and T sub Re provide medical personnel with some guidance on the effect of the marathon on these parameters in uninjured runners.
- Stress Physiology