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Physical activity, smoking, and exercise-induced fatigue.

J R Hughes, R S Crow, D R Jacobs

    Journal of Behavioral Medicine
    |June 1, 1984
    PubMed
    Summary

    Physical inactivity and smoking increase exercise fatigue, impacting exercise program adherence. Other coronary risk factors like age or cholesterol did not show this association.

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    Area of Science:

    • Exercise Physiology
    • Cardiovascular Health
    • Behavioral Medicine

    Background:

    • Coronary risk factors are prevalent, potentially affecting exercise participation.
    • Understanding exercise fatigue in individuals with risk factors is crucial for adherence.
    • Previous research has not clearly linked specific coronary risk factors to exercise-induced fatigue.

    Purpose of the Study:

    • To determine if individuals with coronary risk factors experience increased exercise fatigue.
    • To investigate the relationship between specific risk factors and perceived exertion during and after exercise.
    • To explore the potential impact of fatigue on exercise program compliance.

    Main Methods:

    • Validated ratings of perceived exertion (RPE) as a measure of fatigue.
    • Correlated RPE with heart rate during and after three exercise tests.
    • Assessed fatigue levels in individuals with various coronary risk factors, including physical inactivity, smoking, age, Type A behavior, blood pressure, cholesterol, HDL, and obesity.

    Main Results:

    • Ratings of perceived exertion reliably measured fatigue, correlating strongly with heart rate.
    • Physical inactivity and smoking were significantly associated with increased fatigue during exercise and recovery.
    • Increased fatigue in inactive and smoking individuals was not solely explained by lower fitness levels.

    Conclusions:

    • Physical inactivity and smoking are key factors contributing to heightened exercise fatigue.
    • This increased fatigue may explain lower adherence rates to prescribed exercise regimens in these populations.
    • Targeting inactivity and smoking cessation could improve exercise compliance by mitigating fatigue.

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