Seba
Moderador Nocturno
A un grupo de prueba de personas sobre los 40 años con sobrepeso se le puso un régimen alimenticio con una leve restricción calórica y fueron divididos en dos grupos. Un grupo durmió 8 horas cada noche, el otro grupo solo 5,5 horas. La perdida de peso fue similar en ambos grupos (cerca de 3 kg.) pero la cantidad de grasa que perdió cada grupo fue muy diferente. El grupo que recibió 8 horas de sueño perdio dos veces más grasa (1,4 kg.) que el grupo que durmió solo 5,5 horas (0,6 kg.)
Insufficient Sleep Under the Mines Dietary Efforts Reduce two adiposity Annals of Internal MedicineOctober 5, 2010 vol.Vol.153 no.7 435-441
Abstract
Background: Sleep loss can modify energy intake and expenditure.
Objective: To determine whether sleep restriction attenuates the effect of a reduced-calorie diet on excess adiposity.
Design: Randomized, 2-period, 2-condition crossover study.
Setting: University clinical research center and sleep laboratory.
Patients: 10 overweight nonsmoking adults (3 women and 7 men) with a mean age of 41 years (SD, 5) and a mean body mass index of 27.4 kg/m2 (SD, 2.0).
Intervention: 14 days of moderate caloric restriction with 8.5 or 5.5 hours of nighttime sleep opportunity.
Secondary Measures were changes in Substrate utilization, energy expenditure, hunger, and 24-hour metabolic hormone concentration.
Measurements: The primary measure was loss of barrels and barrel-free body mass.
Results: Sleep curtailment decreased the Proportion of weight lost as barrels by 55% (1.4 vs. 0.6 kg with 8.5 vs. 5.5 hours of sleep opportunity, respectively, P = 0.043) and Increased the loss of fat-free body mass by 60% (1.5 vs. 2.4 kg, P = 0.002).This was accompanied by markers of enhanced neuroendocrine adaptation to caloric restriction, increased hunger, and a shift in relative substrate utilization toward oxidation of less fat.
Limitation: The nature of the study limited its duration and sample size.
Conclusion: The amount of human sleep Contribute To The maintenance of fat-free body mass that hour of decreased energy intake.Lack of sufficient sleep may compromise the efficacy of typical dietary interventions for weight loss and related metabolic risk reduction.
Última edición: