Comparison between CR and CR and restistance training (RT)

[Guest guest]

Hi everybody,

A new study compares a CR group with a CR group which does additional

resistance trainig(RT). The group with additional resistance training

loses more fat but the metabolic profil of both groups is the same.

http://jcem.endojournals.org/cgi/content/abstract/94/9/3226

Journal of Clinical Endocrinology & Metabolism , doi:10.1210/jc.2008-2706

The Journal of Clinical Endocrinology & Metabolism Vol. 94, No. 9 3226-3233

by The Endocrine Society

Resistance Training Does Not Contribute to Improving the Metabolic Profile after

a 6-Month Weight Loss Program in Overweight and Obese Postmenopausal Women

Brochu, Mircea Florin Malita, Virginie Messier, Éric Doucet, Irene

Strychar, Jean-Marc Lavoie, Denis Prud'homme and Rémi Rabasa-Lhoret

Faculty of Physical Education and Sports (M.B.), University of Sherbrooke, J1K

2R1, and Research Centre on Aging, Health and

Social Services Centre (M.B.), Sherbrooke University Institute of Geriatrics,

Sherbrooke, Québec, Canada J1H 4C4;

Departments of Nutrition (M.F.M., V.M., I.S., R.R.-L.) and Kinesiology

(J.-M.L.), University of Montréal, Montréal, Québec,

Canada H3T 1C5; School of Human Kinetic (E.D., D.P.), Faculty of Health

Sciences, University of Ottawa, Ottawa, Ontario,

Canada K1H 8L6; and Centre de Recherche du Centre Hospitalier de l'Université de

Montréal (I.S., R.R.-L.) and Montréal

Diabetes Research Centre of the Centre Hospitalier de l'Université de Montréal

(I.S., R.R.-L.), Montréal, Québec, Canada H2W1T8

Address all correspondence and requests for reprints to: Brochu, Ph.D.,

Centre de Recherche sur le Vieillissement,

Pavillon D'Youville, 1036, Rue Belvédère Sud, Sherbrooke, Québec, Canada J1H

4C4. E-mail: martin.brochu@....

Context: Limited data are available regarding the impact of caloric restriction

(CR) in combination with resistance training (RT) on the metabolic profile of

postmenopausal women.

Objective: The objective of the study was to determine whether RT adds to CR in

improving body composition and the metabolic profile.

Design and Setting: This was a 6-month, randomized, clinical trial.

Patients: Patients included 107 postmenopausal women (body mass index >27

kg/m2).

Intervention: The intervention was a 6-month CR alone or in combination with a

RT program.

Main Outcome Measures: Fat mass (FM), lean body mass (LBM), abdominal sc fat and

visceral fat, fasting lipids, insulin sensitivity, resting blood pressure, and

inflammation markers were measured.

Results: Both groups were similar at baseline and significantly decreased body

weight, body mass index, FM, percent FM, abdominal sc fat, and visceral fat

after the study (P < 0.001), with greater losses of percent FM and trunk FM in

the CR + RT group (P < 0.05). LMB significantly decreased in the CR (–0.9 ± 2.4

kg) and the CR+RT (–0.4 ± 2.2 kg) groups (P < 0.005), with no difference between

them. Both groups significantly improved plasma triglycerides, fasting insulin

level, glucose disposal, and markers of the inflammation profile after weight

loss (P < 0.05), with no difference between groups. No improvements were

observed for the other variables of interest in both groups.

Conclusions: CR+RT was associated with greater losses in percent FM and trunk FM

compared with CR alone. However, CR+RT was not associated with additional

improvements in the metabolic profile compared with CR alone.