Not provided
Not provided
| ID | Type | Description | Link |
|---|---|---|---|
| F31MH079636 | U.S. NIH Grant/Contract | View source |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| National Institute of Mental Health (NIMH) | NIH |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The primary goal of this study is to determine experimentally the relationship between affective response to exercise and future exercise behavior. A secondary goal is to examine potential mediators and moderators of this relationship, specifically four variables considered to contribute to the volitional control of exercise behavior - planning, attention, resource commitment, and affect regulation. An additional goal is to examine how symptoms of depression might influence the affective response to exercise, and the relationship between affective response to exercise and exercise behavior.
The specific aims are as follows:
Aim 1. The first aim is to determine the effectiveness of an experimental manipulation of individuals' affective response to a laboratory-supervised bout of exercise corresponding to a vigorous intensity (just below the ventilatory threshold), compared to a control condition that simply measures individuals' natural affective response to exercise. The investigators will specifically determine the effect of this manipulation on anticipated, experienced and remembered affective response to exercise.
Aim 2. The second aim is to examine individuals' adherence to an exercise prescription over the course of one week that asks them to exercise daily on their own for twenty minutes at the same intensity (as indicated by a heart rate monitor) as the laboratory-supervised exercise session, and to determine whether adherence to this prescription is greater for those who expect exercise to lead to positive affect than those who expect exercise to lead to negative affect, as compared to a control condition.
Aim 3. The third aim is to examine potential mediators and moderators of the relationship between anticipated affect and subsequent exercise behavior, including volitional control of exercise, affect regulation ability, and symptoms of depression.
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Positive Affect Condition | Experimental | Participants read that their exercise prescription was a healthy level of intensity for exercise, and then read that most people indicated this level of intensity leads to positive affect. To further encourage participants to think about how the supposed typical affective response might apply to them personally, they were also asked to describe how they thought the exercise might lead to positive feelings. |
|
| Negative Affect Condition | Experimental | Participants read that their exercise prescription was a healthy level of intensity for exercise, and then read that most people indicated this level of intensity leads to negative affect. To further encourage participants to think about how the supposed typical affective response might apply to them personally, they were also asked to describe how they thought the exercise might lead to negative feelings. |
|
| Control Condition | Experimental | Participants read that their exercise prescription was a healthy level of intensity for exercise - affect was not mentioned. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Positive Affect Condition | Behavioral | Participants read: "Most people exercising at this intensity say that it feels good, and that it makes them feel energized and more positive, and more relaxed afterwards. Thinking about your exercise prescription, please list the reasons or ways in which you, personally, might expect this exercise to lead to positive feelings, and what specifically about this exercise might make you, personally, feel good." |
| Measure | Description | Time Frame |
|---|---|---|
| Days of exercise according to prescription as measured by exercise log | Number of days of prescribed exercise recorded on exercise log | 7 days |
| Days of exercise according to prescription as measured by heart rate monitor | Number of days of prescribed exercise recorded by heart rate monitor | 7 days |
| Measure | Description | Time Frame |
|---|---|---|
| Intentions to exercise according to prescription as measured by intention to exercise scale | Self-report survey: intention to exercise scale | 5 minutes post-intervention |
| Volitional control of exercise: Planning as measured by exercise planning scale |
| Measure | Description | Time Frame |
|---|---|---|
| Positive activated affect as measured by Physical Activity Affect Scale | Self-report survey: Physical Activity Affect Scale, positive affect subscale | 5 minutes before, 10 and 20 minutes during, and 5 minutes after intervention |
| Negative activated affect as measured by Physical Activity Affect Scale |
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Bethany Kwan, PhD | University of Colorado School of Medicine | Principal Investigator |
Not provided
Not provided
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
|
| Negative Affect Condition | Behavioral | Participants read: "Most people exercising at this intensity say that it doesn't feel very good, and that it makes them feel tired and not so positive, and not very relaxed afterwards. Thinking about your exercise prescription, please list the reasons or ways in which you, personally, might expect this exercise to lead to negative feelings, and what specifically about this exercise might make you, personally, feel bad." |
|
| Control Condition | Behavioral | Participants receive no information about affective response |
|
Self-report survey: exercise planning scale
| 7 days post-intervention |
| Volitional control of exercise: Commitment as measured by commitment to exercise scale | Self-report survey: commitment to exercise scale | 7 days post-intervention |
Self-report survey: Physical Activity Affect Scale, negative affect subscale |
| 5 minutes before, 10 and 20 minutes during, and 5 minutes after intervention |
| Tranquility as measured by Physical Activity Affect Scale | Self-report survey: Physical Activity Affect Scale, tranquility subscale | 5 minutes before, 10 and 20 minutes during, and 5 minutes after intervention |
| Fatigue as measured by Physical Activity Affect Scale | Self-report survey: Physical Activity Affect Scale, fatigue subscale | 5 minutes before, 10 and 20 minutes during, and 5 minutes after intervention |