Effect of Outcome Expectations on Psychological and Physiological Responses to Interval Exercise Training
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 66
- 试验地点
- 2
- 主要终点
- Change in relative reinforcing value (RRV) of physical activity
研究概览
简要总结
The purpose of this study is to research the effects of exercising at high intensities for short periods of time on exercise tolerance and motivation.
详细描述
The proposed research will investigate whether adding a treatment component that focuses on positive outcome expectations of a high-intensity interval training (HIIT) intervention produces greater improvements in psychological and physiological study outcomes. This project will yield empirical evidence that will inform how to help Americans meet physical activity guidelines; how to develop exercise programs that are more likely to promote exercise as a habit; and maintenance of health and a healthy body weight.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Body Mass Index of 25-35 kg/m2
- •Sedentary (not regularly engaging in exercise more than once per week)
- •Weight stable (have not lost or gained over 10 pounds of body weight in the past 3 months)
排除标准
- •Taking any medications that affect energy expenditure or treat high blood pressure
- •Tobacco use
- •Pregnant or breastfeeding or plan to become pregnant in the next 3 months
- •Have any medical conditions that prevent subject from safely exercising (e.g., orthopedic injuries, cardiovascular, liver, endocrine, or pulmonary diseases)
- •Resting systolic blood pressure ≥ 140 mmHg
- •Resting diastolic blood pressure ≥ 90 mmHg
- •Non-fasting plasma glucose of ≥ 200 mg/dl
结局指标
主要结局
Change in relative reinforcing value (RRV) of physical activity
时间窗: Week 0, Week 6, Week 10
RRV of physical activity will be assessed by evaluating the number of responses (mouse button presses) a subject is willing to complete to gain access to physical activity or a sedentary alternative.
Changes in preference for intense physical activity and tolerance for exercise discomfort
时间窗: Week 0, Week 6, Week 10
Changes in preference for intense physical activity and tolerance for exercise discomfort will be assessed by self-report questionnaire responses to the Preference for and Tolerance of the Intensity of Exercise Questionnaire (PRETIE-Q). The PRETIE-Q measures preference for high intensity vs. low intensity exercise and ability to persist or tolerate the discomfort associationed with intense exercise. The PRETIE-Q consists of two subscales: Preference for Exercise Intensity and Tolerance of Exercise Intensity. Each subscale has 8 items rated on a 5 point response scale (range 8 - 40). Higher scores indicate greater preference for intense exercise and/or greater tolerance for exercise discomfort. Total scale scores are not used. Scale averages will be used.
次要结局
- Change in minutes of physical activity, as assessed by activity tracker(Week 0, Week 6, Week 10)
- Changes in quadriceps and hamstring (thigh muscle) strength assessed separately on each leg(Week 0, Week 6, Week 10)
- Changes in aerobic fitness, as assessed using the Standardized Exponential Exercise Protocol (STEEP)(Week 0, Week 6, Week 10)
- Changes in anaerobic power, as during a Wingate anaerobic power exercise test(Week 0, Week 6, Week 10)
- Changes in fat mass as assessed by dual energy x-ray absorptiometry (DXA) scans(Week 0, Week 6, Week 10)
- Changes in fat-free lean mass as assessed by DXA scans(Week 0, Week 6, Week 10)
- Changes in tolerance for physical pain and discomfort(Week 0, Week 6, Week 10)
- Changes in perceived support for physical activity from friends and family members(Week 0, Week 6, Week 10)
- Changes in perceptions of how much exercise satisfies autonomy, relatedness, and competence needs(Week 0, Week 6, Week 10)
- Changes in intrinsic, external, interrogated, identified, introjected and amotivation for physical activity(Week 0, Week 6, Week 10)
- Changes in how enjoyable physical activity is perceived to be(Week 0, Week 6, Week 10)
- Changes in perceived effort expended during exercise(Week 0, Week 6, Week 10)
- Changes in perceived pain/discomfort during exercise(Week 0, Week 6, Week 10)
- Changes in perceived ability to continue exercise long-term(Week 0, Week 6, Week 10)
- Changes in perceived ability to stick to an exercise routine(Week 0, Week 6, Week 10)