The purpose of this study is to identify if healthy cookies high in linoleic acid can change sleep quality and sleep architecture, blood fatty acid composition and be consumed with high compliance after eight weeks of consumption. The hypothesis is that consumption of healthy cookies for 8 weeks will improve sleep quality, increase linoleic acid in the blood and be consumed with greater than 80% compliance.
Overall, linoleic acid has many health benefits including altering body composition and energy metabolism, but is not clear if linoleic acid consumption can influence sleep quality. The investigators plan to test the central hypothesis and accomplish the overall objective of this research by pursuing the following specific aims Aim 1) To determine the effect of healthy cookies made with linoleic acid-rich oil on measures of sleep quality and sleep architecture in overweight adults Aim 2) To determine the effect on plasma fatty acid composition and markers of circadian rhythm in peripheral blood mononuclear cells (PBMC) after four and eight weeks of consuming one healthy cookie per day Aim 3) To measure the effect of healthy cookies made with LA-oil on change of lipidomic profiles of plasma and PBMC after four and eight weeks of consumption Aim 4) To determine the feasibility of adherence to consuming 1 healthy cookie per day in place of snack for eight weeks
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
16
High Linoleic Acid Healthy Cookies (containing about 9g of linoleic acid) 1 per day for 8 weeks
Changes in sleep quality using the Pittsburgh Sleep quality index, PROMIS Sleep questionnaire, and insomnia severity index questionnaire
Changes in global sleep quality scores using the Pittsburgh sleep quality index PROMIS Sleep questionnaire, and insomnia severity index measurements
Time frame: Week 0, week 4 and week 8
Feasibility of daily healthy cookie consumption
Percent of healthy cookies consumed
Time frame: Week 8
Changes in blood fatty acids
Changes in linoleic acid levels in the blood
Time frame: Week 0, week 4 and week 8
Changes in markers of circadian rhythm
Changes in mRNA expression of genes related to circadian rhythm in peripheral blood mononuclear cells
Time frame: Week 0, week 4 and week 8
Changes in blood lipidomic profiles
Changes in linoleic acid oxylipins in plasma and cardiolipin in peripheral blood mononuclear cells
Time frame: Week 0, week 4 and week 8
Changes in activity during waking and sleeping hours using an actigraph
Changes in activity during waking and sleeping hours each day will be measured using actigraphy
Time frame: Week 0, week 4 and week 8
Changes in sleep electroencephalography (EEG)
Changes in sleep EEG will be measured to determine sleep efficiency, arousal index, total sleep time
Time frame: Week 0, week 4 and week 8
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Changes in body shape using body mass index (calculated using height and weight) and abdominal thickness
Changes in body mass index and sagittal diameter
Time frame: Week 0 and week 8
Changes in marker of glycemia
Changes in glucose and insulin
Time frame: Week 0, week 4 and week 8
Changes in markers of muscle function using gait speed and grip strength
Changes in grip (hand strength) and gait (walking) speed
Time frame: Week 0 and week 8
Changes in markers of inflammation
Changes in interleukin 6, tumor necrosis factor receptor 2, C-reactive protein
Time frame: Week 0, week 4 and week 8