African American women exhibit similar adherence to intervention but lose less weight due to lower energy requirements

DeLany, James P.; Jakicic, John M.; Lowery, Jolene; Hames, Kazanna C.; Kelley, David E.; Goodpaster, Brett

doi:10.1038/ijo.2013.240

Cited by 40 publications

(39 citation statements)

References 39 publications

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“…Additionally, this study showed that African-American participants lost less total mass and less fat than Caucasian participants. Previous studies have shown similar findings with weight loss interventions [37,38]. In one study, African-American women lost 3.6 kg less weight than Caucasian women matched for initial body weight during 6 months of weight loss intervention, despite similar adherence to the prescribed CR and physical activity [38].…”

Section: Discussionsupporting

confidence: 60%

“…Previous studies have shown similar findings with weight loss interventions [37,38]. In one study, African-American women lost 3.6 kg less weight than Caucasian women matched for initial body weight during 6 months of weight loss intervention, despite similar adherence to the prescribed CR and physical activity [38]. This study again draws attention to the racial disparity in weight loss with a similar intervention.…”

Section: Discussionsupporting

confidence: 60%

“…Contrary to our results, previous research found that RMR decreased less in Caucasians than in African Americans [38], and the decrease in RMR was proportional to changes in body weight and composition in Caucasian but not in AfricanAmerican women [37].…”

Section: Discussioncontrasting

confidence: 56%

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Influence of sleep restriction on weight loss outcomes associated with caloric restriction

Wang

Sparks

Bowyer

et al. 2018

Sleep

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Study Objectives: To examine the effects of moderate sleep restriction (SR) on body weight, body composition, and metabolic variables in individuals undergoing caloric restriction (CR). Methods:Overweight or obese adults were randomized to an 8 week caloric restriction (CR) regimen alone (n = 15) or combined with sleep restriction (CR + SR) (n = 21). All participants were instructed to restrict daily calorie intake to 95 per cent of their measured resting metabolic rate. Participants in the CR + SR group were also instructed to reduce time in bed on five nights and to sleep ad libitum on the other two nights each week. Results:The CR + SR group reduced sleep by 57 ± 36 min per day during SR days and increased sleep by 59 ± 38 min per day during ad libitum sleep days, resulting in a sleep reduction of 169 ± 75 min per week. The CR and CR + SR groups lost similar amounts of weight, lean mass, and fat mass. However, the proportion of total mass lost as fat was significantly greater (p = 0.016) in the CR group. This proportion was greater than body fat percentage at baseline for the CR (p = 0.0035), but not the CR + SR group. Resting respiratory quotient was reduced (p = 0.033) only in CR, and fasting leptin concentration was reduced only in CR + SR (p = 0.029).Conclusions: Approximately 1 hr of SR on five nights a week led to less proportion of fat mass loss in individuals undergoing hypocaloric weight loss, despite similar weight loss. SR may adversely affect changes in body composition and "catch-up" sleep may not completely reverse it. Clinical trial registration: ClinicalTrials.gov (NCT02413866)Key words: sleep restriction; weight loss; body composition; chronic; caloric restriction Statement of SignificancePrevious studies suggest that sleep restriction during caloric restriction adversely affects weight-loss outcomes. This study extends previous findings by examining the effects of a much longer duration of intervention (8 weeks) using a randomized controlled trial (caloric restriction alone or combined with sleep restriction). Furthermore, the sleep restriction was moderate, approximated 60 min shorter on the 5 days of restricted sleep each week. Ad libitum sleep was allowed on the other 2 days each week so that the sleep pattern mimicked real life. We found that sleep restriction resulted in less loss of fat but greater loss of lean mass among the total mass lost, despite similar weight loss between the two groups. Other metabolic changes were also observed.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionsupporting

confidence: 60%

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Influence of sleep restriction on weight loss outcomes associated with caloric restriction

Wang

Sparks

Bowyer

et al. 2018

Sleep

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show abstract

“…Two recent meta-analyses report lower response to behavioral interventions among NH black compared to white women and point to cultural considerations that may improve such results [102, 103•]. A mechanistic study also noted that resting metabolic rate and total daily energy expenditure (adjusted for fat-free mass) are lower in NH black women, and this should be taken into account when calculating the recommended energy intake during calorie restriction programs [104]. Finally, after diet-induced weight loss, overweight NH black women lost less visceral fat compared to white women, although this is probably related to lower initial values [105].…”

Section: Response To Weight Loss Treatmentsmentioning

confidence: 94%

The Interplay Between Sex, Ethnicity, and Adipose Tissue Characteristics

Karastergiou

2015

Curr Obes Rep

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The obesity epidemic in the USA affects disproportionately women and the ethnic minorities. On the other hand, female sex is traditionally associated with a favorable fat distribution preferentially in the subcutaneous depots of the lower body and with improved endocrine and metabolic function of the adipose tissue. However, these data are derived from predominantly non-Hispanic white populations. This review discusses fat distribution patterns in women of diverse ethnic backgrounds, together with data on the release of adipokines from adipose tissue in these populations. Very little information is available on how the metabolic function of the adipocyte differs depending on ethnicity. Thus, it becomes clear that future clinical and translational research should explicitly discuss and take into account the sex and ethnic background of the populations studied.

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“…Posteriormente, una vez que el cuerpo alcance el punto de asentamiento descrito por los mismos autores, el déficit energético continuado debido al ejercicio causará una pérdida de masa libre de grasa, la cual a su vez reduciría la TMB y el GEDT. En la práctica, esta relación podría no funcionar como se esperaría y podría verse complicada por otros factores como la raza (DeLany, et al, 2014). La disminución en la ingesta energética, esto es, "hacer dieta", produciría una disminución en el ETA y también podría provocar una disminución en la actividad física diaria y en el gasto energético diario total (Redman et al, 2009).…”

Section: Gasto Energético Diario Totalunclassified

Conducta Ocupacional Sedentaria Y Soluciones Para Aumentar La Termogénesis No Asociada Al Ejercicio

2016

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RESUMEN Scott, H.M., Tyton, T.N., & Horswill, C.A. (2016). Conducta ocupacional sedentaria y soluciones para aumentar la termogénesis no asociada al ejercicio. PENSAR EN MOVIMIENTO: Revista de Ciencias del Ejercicio y la Salud, 14(2), 22-43. Conforme aumenta la prevalencia de la obesidad en todo el mundo, los investigadores buscan explicaciones para este fenómeno, en particular aquellas relevantes al gasto energético. Se ha identificado que la termogénesis no asociada al ejercicio, abreviada como NEAT (por sus siglas en inglés), es un componente discreto, pero a la vez considerable, del gasto energético diario total. Las exigencias de algunas ocupaciones limitan la disposición de tiempo para la actividad física planificada y claramente reducen la NEAT, lo cual contribuye a las conductas sedentarias que provocan la adiposidad aumentada. Se ha identificado específicamente al tiempo sentado prolongado durante la jornada laboral como un factor de riesgo para la obesidad y las enfermedades crónicas, independientemente de otros factores de riesgo existentes. Se han puesto en práctica algunas estrategias prácticas para aumentar la NEAT durante la jornada laboral: existen estaciones de trabajo que requieren mantener el equilibrio mientras se trabaja sentado en una pelota suiza (bola de ejercicio) o trabajar de pie, también otras en las que se pedalea sentado o se camina 1 También disponible en la versión original en inglés en este mismo número.

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African American women exhibit similar adherence to intervention but lose less weight due to lower energy requirements

Cited by 40 publications

References 39 publications

Influence of sleep restriction on weight loss outcomes associated with caloric restriction

Influence of sleep restriction on weight loss outcomes associated with caloric restriction

The Interplay Between Sex, Ethnicity, and Adipose Tissue Characteristics

Conducta Ocupacional Sedentaria Y Soluciones Para Aumentar La Termogénesis No Asociada Al Ejercicio

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