Publications by authors named "J Quist"

Introduction: We codesigned an intervention with a low-resourced community with the aim to investigate the effects of time-restricted eating (TRE) on changes in body weight and associated cardiometabolic outcomes in South African women living with overweight/obesity and HIV who have initiated dolutegravir (DTG)-based antiretroviral therapy (ART).

Methods And Analysis: Women with overweight or obesity (body mass index ≥25 kg/m², no upper limit), aged 20-45 years, living with HIV and in a low-resourced community, and receiving DTG-based ART for less than 2 years will be recruited from a community healthcare centre in Khayelitsha, Cape Town (n=152). Participants will be randomised 1:1 to the TRE group (n=76) or standard of care control group (n=76) for 12 months.

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A person's chronotype reflects individual variability in diurnal rhythms for preferred timing of sleep and daily activities such as exercise and food intake. The aim of this review is to provide an overview of the evidence around the influence of chronotype on eating behaviour and appetite control, as well as our perspectives and suggestions for future research. Increasing evidence demonstrates that late chronotype is associated with adverse health outcomes.

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Article Synopsis
  • The study investigates the feasibility of a time-restricted eating (TRE) intervention for women aged 20-45 living with both HIV and overweight/obesity in Cape Town, South Africa, to combat the weight gain associated with anti-retroviral treatment, specifically dolutegravir (DTG).
  • Factors influencing the adoption of TRE were identified, including psychological capability, social influences, and reflective motivation, utilizing models like the Capability, Opportunity, Motivation - Behaviour framework and Theoretical Domains Framework through interviews and a pilot trial.
  • In a 4-week pilot trial with 12 participants, retention was 100%, and positive outcomes included improved energy levels, appetite control, and weight loss, indicating that TRE was seen as an acceptable
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The aim of this systematic review and meta-analysis was to examine the effects of plant-based diets on markers of insulin sensitivity in people with overweight/obesity, prediabetes, or type 2 diabetes (T2D). A systematic literature search in MEDLINE, Embase, CINAHL, and CENTRAL was conducted, and randomised controlled trials (RCTs) investigating the effect of plant-based diets (vegan, ovo-vegetarian, lacto-vegetarian, and lacto-ovo-vegetarian) for ≥14 d on markers of insulin sensitivity in adults (≥18 years) with BMI ≥ 25 kg/m, prediabetes, or T2D were eligible. We identified eight RCTs, including 716 participants.

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Background: Patients with an ileostomy often have impaired quality of life, sodium depletion, secondary hyperaldosteronism, and other organ-specific pathologies. The osmolality of oral supplements influences ileostomy output and increases sodium loss. We hypothesized the existence of an osmolality range in which fluid absorption and secondary natriuresis are optimal.

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