Publications by authors named "K Pyke"

Article Synopsis
  • The study looked into how getting older affects blood flow and the structure of the brain.
  • Researchers thought that older people would have less gray matter and lower blood flow in the brain compared to younger people.
  • They found that while older people had lower blood flow and less gray matter, their brain still activated normally during memory tasks, suggesting that aging affects blood flow but not memory ability in the same way.
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Our objective was to explore whether consuming the same high-fat/sugar beverage affects endothelial function differently depending on whether it is presented as "unhealthy" [accurate high calorie (kcal), fat, and sugar information displayed] versus "healthy" (inaccurate low kcal, fat, and sugar information displayed). Twenty-five, young (21 ± 2 yr), healthy, food-stress/shame-prone women completed three conditions: milkshake consumption (540 kcal, 80 g sugar, and 14 g fat) where correct, "unhealthy" nutritional information was shown to participants (milkshake condition), consumption of the same milkshake but with incorrect, "healthy" information shown to participants (100 kcal, 3 g sugar, and 4 g fat; sham-nutrishake condition), and water consumption (control condition). Pre- and postbeverage we assessed ) endothelial function via standard brachial artery flow-mediated dilation (FMD); ) perceived shame, stress, beverage healthiness, and harm; and ) blood (plasma) glucose, insulin, triglycerides and oral fluid cortisol, and tumor necrosis factor-alpha (TNFα) receptor binding.

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Subjective social status (SSS) is an important independent predictor of health outcomes, however, the pathways through which it affects health are poorly understood. Chronic shame has previously been suggested as a potential mechanism but this has never been investigated and the relationship between chronic shame and health is under-researched. The purpose of this pilot study was to explore whether chronic shame explains a significant portion of the association between SSS and self rated health (SRH).

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There is some evidence that transient endothelial dysfunction induced by acute hyperglycemia may be attenuated by a single bout of aerobic exercise. However, the impact of aerobic exercise training on acute hyperglycemia-induced endothelial dysfunction has not been explored. The purpose of this study was to determine the impact of aerobic exercise training on the endothelial function response to acute hyperglycemia.

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Background: Collective impact is gaining traction to improve population health outcomes. This study aimed to determine where and how collective impact is being used in nutrition and describe current understandings of its impacts or results on health or nutrition outcomes.

Methods: A systematic scoping review was undertaken with four databases ('CINAHL Plus', 'Sociological Abstracts', 'PsychInfo', and 'OVID Medline') using the search term 'Collective Impact' from 2011 up to November 2022.

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