Trial | NCT04344821  Report issue

Title

Curves 30/30 Study
Effects of Repeated Short-Term Diets on Weight Loss in Women Participating in the Curves Fitness Program

  • Phase

    N/A

  • Study Type

    Interventional

  • Status

    Completed No Results Posted

  • Study Participants

    57
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.
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.
Study Started
May 18
2009
Primary Completion
May 03
2012
Study Completion
May 03
2012
Last Update
Apr 15
2020

Dietary Supplement Curves Calcium [manganese, copper (cu-7), calcium citrate, boron, vitamin d3, potassium chloride (klor-con)]

Dietary Supplement: Curves Calcium Curves Essential Bio-Available Calcium (providing 800 mg/d of calcium [as calcium citrate malate and calcium citrate], 400 IU of Vitamin D, 300 mg/d of magnesium, 4 mg/d of zinc, 2 mg/d of copper, 2 mg/d of manganese, 198 mg/d of potassium, 100 mg/d of trace mineral complex, and 2 mg/d of boron)

Dietary Supplement Placebo

Dextrose Placebo

Control Placebo Comparator

No diet or exercise intervention

No Diet plus Exercise Experimental

No diet, exercise only intervention

High Protein Diet plus Exercise Experimental

High protein diet and exercise intervention

High Carbohydrate Diet plus Exercise Experimental

High carbohydrate diet and exercise intervention

Criteria 

Inclusion Criteria:

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;

Exclusion Criteria:

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;
No Results Posted