1. Introduction: Exercise as an Addiction
Defining Exercise Addiction
- Tolerance: increasing the amount of exercise in order to feel the desired effect, be it a” buzz” or sense of accomplishment;
- Withdrawal: in the absence of exercise the person experiences negative effects such as anxiety, irritability, restlessness, and sleep problems ;
- Lack of control: unsuccessful at attempts to reduce exercise level or cease exercising for a certain period of time;
- Intention effects: unable to stick to one’s intended routine as evidenced by exceeding the amount of time devoted to exercise or consistently going beyond the intended amount;
- Time: a great deal of time is spent preparing for, engaging in, and recovering from exercise;
- Reduction in other activities: as a direct result of exercise social, occupational, and/or recreational activities occur less often or are stopped;
- Continuance: continuing to exercise despite knowing that this activity is creating or exacerbating physical, psychological, and/or interpersonal problems.
2. Results and Discussion
2.1. Distinguishing Exercise Addiction from Other Disorders
2.2. Exercise Addiction, Exercise Compulsion, or Impulse Control Disorder?
2.3. Addictions that Co-Occur with Exercise Addiction
2.4. When is Frequent Exercise Not an Addiction?
Sally makes a New Year’s Resolution to “get in shape.” She begins going to the gym every morning before work. She enjoys how exercise has improved her strength and appearance but enjoys running the most because it helps her forget her worries and leaves her feeling relaxed. She begins running longer distances on the treadmill. As her endurance increases, she decides to train for a five-mile race with a group of other runners. She follows this program to the letter. After successfully completing the race, she feels wonderful and decides to continue the training regimen on her own, gradually increasing her distance. One day, while running on the treadmill, Sally twists her ankle. She has a severe sprain and her doctor recommends she stop running for the next few weeks. On the first day of refraining from exercise, Sally feels a little irritable. Over the next few days, she just doesn’t seem herself; she misses running and wonders if she is depressed. She begins to think the doctor over-reacted and decides to go to the gym just to lift some weights. She does this for two days but on the third day she cannot resist the urge to get on the treadmill; she runs until her ankle gives out.
2.4.1. Phase One: Recreational Exercise
2.4.2. Phase Two: At-Risk Exercise
- The Thermogenic Hypothesis: exercise increases body temperature, thereby reducing somatic anxiety. This decrease in anxiety is related to an increased temperature in certain brain regions ;
- The Catecholamine Hypothesis: exercise releases catecholamines, which are strongly implicated in control of mood, attention, and movement as well as endocrine and cardiovascular responses linked to stress ;
- The Endorphin Hypothesis: exercise releases endorphins, which are opiates that occur naturally in the body. This pleasurable experience of exercise may have unplanned consequences. With regular intense aerobic exercise, the increased endorphin production results in the brain down-regulating endorphin production. If this happens, the person will need to continue the exercise in order to maintain the natural balance in the brain .
2.4.3. Phase Three: Problematic Exercise
2.4.4. Phase Four: Exercise Addiction
3. Implications and Conclusions
3.1. Assessment and Treatment Implications
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