Effects of Repeated Short-Term Diets on Weight Loss in Women Participating in the Curves Fitness Program

Texas A&M University2 个研究点分布在 1 个国家目标入组 57 人开始时间: 2009年5月18日最近更新: 2020年4月15日

适应症

试验速览

阶段: 不适用
状态: 已完成
发起方: Texas A&M University
入组人数: 57
试验地点: 2
主要终点: Body Composition: Body Fat

研究概览研究设计入排标准结局指标研究者研究点记录与标识符相似试验

研究概览

简要总结

The purpose of this study is to determine whether following a high carbohydrate/low fat diet or high protein/low fat diet for 30-days several times during six months of participating in the Curves fitness and diet program with or without dietary calcium supplementation promotes stepwise reductions in body weight, improvements in body composition, and/or improvements in markers of fitness and health.

详细描述

The Curves International fitness and weight loss program has become a very popular means of promoting health and fitness among women. The program involves a 30-minute circuit training program and a weight management program involving periods of moderate caloric restriction (1,200 to 1,600 calories per day) followed by short periods of higher caloric intake (2,600 calories per day). The program is designed to promote a gradual reduction in body fat while increasing strength and muscle mass/tone. Researchers in the Exercise & Sport Nutrition Laboratory (ESNL) at Texas A&M University have conducted an extensive study on the effectiveness and safety of the Curves fitness and diet program. Results of this initial study have shown that the program promotes weight loss, improves markers of health, and improves fitness. However, we feel that the program may be even more effective with some additional nutritional interventions. Calcium has been shown to slow bone loss and more recently has been found to help promote fat loss. If this is the case, supplementing the diet with calcium may promote greater benefits in women participating in the Curves fitness and diet program. The purpose of this study is to determine whether following a high carbohydrate/low fat diet or high protein/low fat diet for 30-days several times during six months of participating in the Curves fitness and diet program with or without dietary calcium supplementation promotes stepwise reductions in body weight, improvements in body composition, and/or improvements in markers of fitness and health.

研究设计

研究类型: Interventional
分配方式: Randomized
干预模型: Parallel
主要目的: Health Services Research
盲法: Single (Investigator)

盲法说明

Double (Participant, Investigator)

入排标准

年龄范围: 18 Years 至 45 Years（Adult）
性别: Female
接受健康志愿者: 是

入选标准

•Participant is female;
•Participant is post-menopausal;
•Participant is between the ages of 18 and 45;
•Participant is sedentary, overweight (BMI > 27) and post-menopausal;

排除标准

•Participant has any metabolic disorders including known electrolyte abnormalities, heart disease, arrhythmias, diabetes, or thyroid disease;
•Participant has a history of hypertension, hepatorenal, musculoskeletal, autoimmune or neurological disease;
•Participant is taking thyroid, hyperlipidemic, hypoglycemic, anti-hypertensive or androgenic medications;
•Participant has taken ergogenic levels of nutritional supplements that may affect muscle mass (i.e., creatine, HMB, etc.), anabolic/catabolic hormone levels (i.e., androstenedione, DHEA, etc.) or weight loss (i.e., ephedra, thermogenics, etc.) within three months prior to the start of the study;
•Participant is consistently taking 500 mg or more of a Calcium supplement per day;
•Participant is receiving Hormone Replacement Therapy (HRT);
•Participant is involved in a planned exercise program within 3 - 6 months prior to the start of the study;
•Participant has lost > 20 lbs. within the last 3 - 6 months;