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Related Experiment Videos

Rectal temperature after marathon running.

R J Maughan, J B Leiper, J Thompson

    British Journal of Sports Medicine
    |December 1, 1985
    PubMed
    Summary
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    Post-race rectal temperature in marathon runners correlated with pace changes, not overall finish time. Slowing down significantly in later race stages, especially in cool conditions, indicates a risk of hypothermia.

    Area of Science:

    • Sports Medicine
    • Exercise Physiology
    • Environmental Health

    Background:

    • Marathon running involves significant physiological stress.
    • Maintaining core body temperature is crucial during endurance events.
    • Understanding factors influencing body temperature in runners is important for performance and safety.

    Purpose of the Study:

    • To investigate the relationship between post-race rectal temperature and running performance in a marathon.
    • To identify factors associated with changes in body temperature during a marathon.
    • To assess the risk of hypothermia in marathon runners based on performance metrics.

    Main Methods:

    • Rectal temperature measurement immediately post-marathon.
    • Recording of competitor times at various mile markers (5, 10, 15, 20, and finish).

    Related Experiment Videos

  • Analysis of correlations between post-race temperature, finishing times, and pace changes.

    • Main Results:

    • Post-race rectal temperature was correlated with the time taken for the final 6.2 miles (10 km) (p < 0.01), but not overall finishing time (p > 0.05).
    • Slower runners exhibited progressive decreases in running speed, while faster runners maintained a more consistent pace.
    • Runners with higher post-race temperatures tended to maintain a steady pace, whereas those with lower temperatures slowed significantly in the final stages.

    Conclusions:

    • Pace maintenance, particularly in the latter stages of a marathon, is a better indicator of thermal status than overall finishing time.
    • Significant slowing in the final miles of a marathon, especially in cool ambient temperatures, suggests a potential risk of hypothermia.
    • Fatigue or injury leading to reduced pace in the late stages of a marathon may precipitate hypothermia.