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Exercise is a key component of behavioral weight loss programs because of its effect on weight loss, body composition, cardiovascular disease risk factors, and other obesity related diseases such as type 2 diabetes mellitus. Despite these benefits, it is unclear whether there is an optimal exercise duration and/or intensity that will enhance long-term weight loss. The current public health recommendation for physical activity is for individuals to participate in at least 30 minutes of moderate intensity physical activity on most days of the week (approximately 150 minutes per week total). However, it is unclear whether this amount of exercise is adequate for long-term weight loss. Moreover, cross-sectional studies have shown that individuals that have been successful at long-term weight loss participate in levels of physical activity that are greater than the current public health recommendations.
The researchers hypothesized that adopting higher levels of exercise duration and/or intensity, coupled with a strong behavioral intervention would enhance long-term weight loss. To test this hypothesis, they recruited 200 overweight women and randomly assigned them to one of four treatment groups: (1) moderate intensity, moderate 1000cal/wk duration exercise, (2) vigorous intensity moderate duration exercise, (3) moderate 2000cal/wk intensity, high duration exercise, and (4) vigorous intensity, high duration exercise. All subjects participated in a 24-month behavioral weight loss program, with subjects attending group meetings and receiving periodic telephone contacts from the weight loss program, with subjects attending group meetings and receiving periodic telephone contacts from the interventionists. In addition, to facilitate the adoption of the exercise protocols, all subjects were provided with a home treadmill. Assessment of body weight occured at 0, 6, 12, and 24 months and exercise participation was measured throughout the program. In addition, body composition, cardiorespiratory fitness, cardiovascular disease risk factors, and mediators of behavior change were measured at 0, 6, 12, and 24 months.
Observational Model: Defined Population, Observational Model: Natural History, Time Perspective: Longitudinal
National Heart, Lung, and Blood Institute (NHLBI)
Published on BioPortfolio: 2014-07-23T21:56:21-0400
Human immunodeficiency virus (HIV) infection has been associated with a variety of cardiovascular diseases. Even most industrialised countries exhibit a growing and aging population of HIV...
This study evaluates the effects of different volumes of aerobic exercise training in cardiovascular parameters of patients with cardiovascular diseases enrolled in a cardiac rehabilitatio...
To develop a comprehensive protocol for assessing cardiovascular reactivity to stressors, for use in epidemiological and clinical investigations of cardiovascular diseases in healthy popul...
The Silesian Cardiovascular Database is an observational study of all patients hospitalized due to cardiovascular diseases. The date include information on the clinical characteristics, tr...
The incidence of cardiovascular diseases is still high and further efforts should be done in primary prevention. The main objective is to quantify the burden of subclinical atherosclerosis...
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Although alexithymia has been suggested to be associated with cardiovascular diseases, studies are scarce and a causal relationship is questionable. This study explored the prospective association bet...
Cardiovascular disease is a primary cause of mortality worldwide. Therefore, it is of major interest to identify sensitive molecular markers that predict cardiovascular events and point to therapeutic...
Evaluation of the effectiveness of risk management in persons with high cardiovascular risk is an important element in reducing the death rate of the population from cardiovascular diseases (CVD).
The fact that microRNAs play an important role in the development and pathogenesis of cardiovascular disease is beyond doubt. This article provides a brief overview of recent data that relate to micro...
Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM.
Methods and procedures for the diagnosis of diseases or dysfunction of the cardiovascular system or its organs or demonstration of their physiological processes.
Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)
Dental care for patients with chronic diseases. These diseases include chronic cardiovascular, endocrinologic, hematologic, immunologic, neoplastic, and renal diseases. The concept does not include dental care for the mentally or physically disabled which is DENTAL CARE FOR DISABLED.
Blood pressure levels that are between normotension and hypertension. Individuals with prehypertension are at a higher risk for developing cardiovascular diseases. Generally, prehypertension is defined as SYSTOLIC PRESSURE of 131-139 mm Hg and/or DIASTOLIC PRESSURE of 81-89 when the optimal is 120/80 mm Hg. For diabetics and other metabolism diseases the prehypertension is around 110-129/70-79 mm Hg.
Obesity is the condition in which excess fat has accumulated in the body (mostly in subcutaneous tissues). clinical obesity is considered to be present when a person has a BMI of over 30 (Oxford Dictionary of Medicine). It is becoming increasing common i...
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...