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Lewis and Clark Reloaded

The 3,041-Mile Bike Trail


Author(s)

Mary Rose Grant
School for Professional Services
Saint Louis University
grantmr@slu.edu

Abstract

Frank and Joe are 24-year-old fraternal twins who share similar interests, including cycling. The brothers decide to attempt their first long-distance bicycling trip, retracing the journey of early American explorers Lewis and Clark to the Northwest.  Along the way, serious problems arise.  Students review normal physiology of organ systems as well as changes that occur during physical exertion to piece together an understanding of the medical condition of one of the cyclists. The pivotal point in the case is learning that seemingly harmless and legally available substances can lead to potentially fatal outcomes, affecting organ systems already taxed beyond normal limits. This case is designed for use in a human biology course after students have learned about the integumentary, respiratory, cardiovascular, neuromuscular, and urinary systems.


Objectives

  • Understand physiological changes and adaptations organ systems make with physical exertion over an extended period of time.
  • Define the term “ergogenic aid” as applied in sports and exercise.
  • Identify the effects of caffeine on different organ systems.
  • Discuss the role of caffeine as an ergogenic aid in endurance sports.
  • Explain the side effects of caffeine intoxication.
  • Identify potential dangers of caffeine use in combination with other substances.
  • Practice critical thinking and analytical skills to make a diagnosis.
  • Examine legal implications of caffeine use, or “doping,” before competition.
  • Analyze ethical issues of using caffeine, or any ergogenic product, to enhance performance in amateur and professional sports.

Keywords

Caffeine intoxication; ergogenic aid; substance use; performance-enhancing drugs; doping; exercise physiology; physical exertion; endurance sports

Topical Areas

Ethics, Legal issues

Educational Level

High school, Undergraduate lower division

Format

PDF

Type / Methods

Interrupted

Language

English

Subject Headings

Biology (General)  |   Physiology  |   Sports Science  |  


Date Posted

06/30/05

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