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Appl Physiol Nutr Metab. 2017 Feb;42(2):216-227. doi: 10.1139/apnm-2016-0456. Epub 2017 Jan 3.

Efficacy of a randomized trial examining commercial weight loss programs and exercise on metabolic syndrome in overweight and obese women.

Author information

1
a Health & Kinesiology, University of Texas San Antonio, San Antonio, TX 78249, USA.
2
b Exercise & Sports Nutrition Lab, Texas A&M University, College Station, TX, USA.
3
c Department of Rehabilitation Services, University of Texas Medical Branch, Galveston, TX, USA.
4
d Department of Kinesiology, Texas Christian University, Fort Worth, TX, USA.
5
e Exercise and Sports Science, Wisconsin-La Crosse, La Crosse, WI, USA.
6
f Department of Physical Therapy, Methodist University, Fayetteville, NC, USA.

Abstract

While commercial dietary weight-loss programs typically advise exercise, few provide actual programing. The goal of this study was to compare the Curves Complete 90-day Challenge (CC, n = 29), which incorporates exercising and diet, to programs advocating exercise (Weight Watchers Points Plus (WW, n = 29), Jenny Craig At Home (JC, n = 27), and Nutrisystem Advance Select (NS, n = 28)) or control (n = 20) on metabolic syndrome (MetS) and weight loss. We randomized 133 sedentary, overweight women (age, 47 ± 11 years; body mass, 86 ± 14 kg; body mass index, 35 ± 6 kg/m2) into respective treatment groups for 12 weeks. Data were analyzed using chi square and general linear models adjusted for age and respective baseline measures. Data are means ± SD or mean change ± 95% confidence intervals (CIs). We observed a significant trend for a reduction in energy intake for all treatment groups and significant weight loss for all groups except control: CC (-4.32 kg; 95% CI, -5.75, -2.88), WW (-4.31 kg; 95% CI, -5.82, -2.96), JC (-5.34 kg; 95% CI, -6.86, -3.90), NS (-5.03 kg; 95% CI, -6.49, -3.56), and control (0.16 kg, 95% CI, -1.56, 1.89). Reduced MetS prevalence was observed at follow-up for CC (35% vs. 14%, adjusted standardized residuals (adjres.) = 3.1), but not WW (31% vs. 28% adjres. = 0.5), JC (37% vs. 42%, adjres. = -0.7), NS (39% vs. 50% adjres. = -1.5), or control (45% vs. 55% adjres. = -1.7). While all groups improved relative fitness (mL·kg-1·min-1) because of weight loss, only the CC group improved absolute fitness (L/min). In conclusion, commercial programs offering concurrent diet and exercise programming appear to offer greater improvements in MetS prevalence and cardiovascular function after 12 weeks of intervention.

KEYWORDS:

diet; diète; exercice physique; exercise; metabolic syndrome; syndrome métabolique

PMID:
28044449
DOI:
10.1139/apnm-2016-0456
[Indexed for MEDLINE]
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