Effect of aerobic and resistance training over a 6-weeks day hospital period on body fat in moderately to severely obese patients

Mr Julien FEURERa, Dr Guillaume MUFFa, Dr Julien MASATb, Dr Evelyne LONSDORFERb, Dr Stéphane DUFOURc, Prof Fabrice FAVRETc, Dr Patrycja GROSJEANa, Dr Marie-Eve ISNER-HOROBETIa

a Université de Strasbourg, Institut Universitaire de Réadaptation Clémenceau (IURC), b Université de Strasbourg, Service de Physiologie et Explorations Fonctionnelles NHC, Hôpitaux Universitaires de Strasbourg, c Université de Strasbourg, Faculté des Sciences du Sport

Object: While numbers of studies, using aerobic and resistance exercise training, have been conducted in obese patients over a period from 8 to 12 weeks (1,2), few are available in a model of 6 weeks day hospital period. Then we have developed a program including continuous and intermittent aerobic exercise as well as strength training during 6 weeks. The main objective of our protocol was to determine whether 6 weeks of training in day hospital enhance peak oxygen consumption, strength and reduce significantly the fat mass in obese patients.

Materials and Methods: Aerobic and strength capacity in moderately to severely obese patients (n=6,BMI 35-40 kg/m2) was assessed by an incremental test, isokinetic measurement and 1-RM determination before and after training period. Body composition including fat mass and fat-free mass was determined by bioelectrical impedance. Based on the results of aerobic and strength test a 6 weeks training program was conducted. Intermittent and continuous aerobic exercises were realized two times per week as well as strength exercise.

Results: The first results (in the first 6 patients) show a decrease of 6.9±4.9% of fat mass, an improvement of 12±4.3% in strength, but without improvement in peak oxygen consumption (VO2peak).

Discussion/conclusion: It appears that in moderately to severely obese patients, a mixed 6-week day hospital training program allows to significantly reduce fat mass and to increase muscular strength.


1.García-Unciti M, Martinez JA, Izquierdo M, Gorostiaga EM, Grijalba A, Ibañez J. Effect of resistance training and hypocaloric diets with different protein content on body composition and lipid profile in hypercholesterolemic obese women. Nutr Hosp. 2012 ;27(5):1511-20.

2.Ho SS, Dhaliwal SS, Hills AP, Pal S. The effect of 12 weeks of aerobic, resistance or combination exercise training on cardiovascular risk factors in the overweight and obese in a randomized trial. BMC Public Health. 2012 28;12(1):704

Keywords : obesity, training program, fat mass loss, VO2peak, isokinetic, day hospital