Sports Medicine: Just the Facts

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Diabetic patients should be familiar with their individual
blood glucose patterns and should be taught to recog-
nize symptoms of hypoglycemia and hyperglycemia.
•Exercise is safe when diabetes is under good control
(serum glucose of 90–140 mg/dL). Diabetic patients
should eat approximately 1–3 h before exercise. The
content of the meal should be tailored in accordance
with estimated intensity, duration, and energy expen-
diture of the exercise session.
•Type I diabetic patients should administer insulin in
the abdomen (away from exercising muscle groups
that delay absorption) 1 h prior to exercise. If the pre-
activity serum glucose is less than 100 mg/dL, a sup-
plemental snack should be consumed before exercise.
If the serum glucose is greater than 250 mg/dL or the
urine is positive for ketones, the exercise session
should be postponed.



  • During exercise, supplemental snacks should be con-
    sumed during particularly strenuous or lengthy exer-
    cise. All patients should be advised to consume
    adequate fluids during their exercise session.

  • After exercise, patients should monitor serum glucose
    levels and be alert for signs and symptoms of either
    hypoglycemia or hyperglycemia.


CORONARY ARTERY DISEASE



  • An individualized exercise prescription is an impor-
    tant secondary preventive tool for patients with docu-
    mented coronary artery disease. All-cause mortality is
    reduced in patients suffering a myocardial infarction
    who participate in a program of cardiac rehabilitation
    (Franklin BA, 2000).

  • The level of supervision for patients with known coro-
    nary artery disease should be based on the patient’s
    clinical status, vocational demands, and personal goals.

  • The American Heart Association has published specific
    guidelines regarding staffing, supervision, and progres-
    sion of cardiac rehabilitation programs for patients with
    known coronary artery disease (Balady et al, 2000).


PREGNANCY


•Physical activity is safe for pregnant patients and should
be routinely encouraged. Pregnant women should accu-
mulate 30–60 min of moderate physical activity at least
three times per week (American College of Obstetricians
and Gynecologists, 1994). Vigorous sustained exercise
should be avoided during pregnancy.



  • As pregnancy progresses, a pregnant woman’s center
    of gravity changes, and she should be counseled to
    avoid activities with a high risk of falling.

    • Pregnant women should avoid saunas, hot tubs, or
      prolonged exercise that consistently elevates core
      body temperature.

    • Pregnant women should be encouraged to consume
      adequate amounts of fluid during exercise.
      Pregnancy-induced hypertension, preterm, or prema-
      ture rupture of membranes, preterm labor, persistent,
      or unexplained vaginal bleeding or intrauterine
      growth restriction are all contraindications to exercise
      during pregnancy (American College of Obstetricians
      and Gynecologists, 1994).




REFERENCES


American College of Obstetricians and Gynecologists: Exercise
during pregnancy and the postpartum period. ACOG Tech Bull
189(45):1–5, 1994.
Balady GJ, Ades PA, Comoss P, et al: Core components of car-
diac rehabilitation/secondary prevention programs: A state-
ment for healthcare professionals from the American Heart
Association and the American Association of Cardiovascular
and Pulmonary Rehabilitation Writing Group. Circulation
102(9):1069–1073, 2000.
Evidence-based nutrition principles and recommendations for the
treatment and prevention of diabetes and related complica-
tions. Diabetes Care25:S50–S60, 2002.
Exercise prescription for cardiac patients, in Franklin BA,
Whaley MH, Howley ET (eds.): ASCM’s Guidelines for
Exercise Testing and Prescription,6th ed. Philadelphia,
Lippincott, Williams & Wilkins, 2000, pp 165–199.
General principles of exercise prescription, in Franklin BA,
Whaley MH, Howley ET (eds.): ASCM’s Guidelines for
Exercise Testing and Prescription,6th ed. Philadelphia,
Lippincott, Williams & Wilkins, 2000, pp 137–164.
Mazzeo RS, Tanaka H: Exercise prescription for the elderly:
Current recommendations. Sports Med31:809–818, 2001.
Nied RJ, Franklin B. Promoting and prescribing exercise for the
elderly. Am Fam Phys65:419–426, 2002.
Stephens MB, O’Connor FC, Deuster PA. Exercise and Nutrition.
Mongraph, 283 ed., AAFP Home Study. Leawood, KS,
American Academy of Family Physicians, December 2002.
US Department of Health and Human Services. Physical activity
and health: A report of the surgeon general. Atlanta, GA, US
Department of Health and Human Services, Centers for
Disease Control and Prevention, National Center for Chronic
Disease Prevention and Health Promotion, 1996.
US Department of Health and Human Services. Healthy People
2010: Understanding and Improving Health. Washington, DC,
US Department of Health and Human Services, Government
Printing Office, 2000.
US Preventive Services Task Force. Behavioral counseling in pri-
mary care to promote physical activity: Recommendations and
rationale. Guide to Clinical Preventive Services, 3rd ed.
Rockville, MD, 2002.

94 SECTION 1 • GENERAL CONSIDERATIONS IN SPORTS MEDICINE

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