The primary purpose of this study is to assess changes in epigenetic markers of aging and physiological parameters in overweight older adults consuming a mixed greens-based supplement over a 30-day period in a randomized crossover design.
Investigators will recruit 20 overweight/obese but otherwise healthy participants aged 50-65. Participants will be randomized to consume the greens-based supplement each morning for the first 30 days or second 30 days of the study. Usual diet, physical activity, and sleep patterns will be encouraged and monitored during the duration of the study. Phlebotomy will be conducted at baseline, 30-day crossover, and 60-day follow-up to assess DNA methylation in peripheral blood mononuclear cells. Visceral and total body fat, stool microbiome composition, and actigraphy will also be assessed.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
20
Participant will consume one serving of greens-based supplement per day in the morning, for 30 days.
Auburn University
Auburn, Alabama, United States
Changes in DNA Methylation in Peripheral Blood Mononuclear Cells
Change from Baseline in Epigenetic Aging Profiles (i.e. DNA Methylation), after 30 day intervention. Participants will provide blood samples at their baseline study visit, which occurs before the start of the intervention, and at their visit at the end of the 30th of intervention supplementation.
Time frame: Change from day 0 (baseline) to day 30 post intervention supplementation.
Fasting serum triglycerides
Phlebotomy will be obtained while fasted 8+ hours and triglycerides will be measured as part of a comprehensive metabolic panel and reported in mg/dl. Lower concentrations are optimal.
Time frame: Change from day 0 (baseline) to day 30 post intervention supplementation.
Fasting serum low-density lipoproteins (LDL)
Phlebotomy will be obtained while fasted 8+ hours and low-density lipoproteins (LDL) will be measured as part of a comprehensive metabolic panel and reported in mg/dl. Lower concentrations are optimal.
Time frame: Change from day 0 (baseline) to day 30 post intervention supplementation.
Fasting serum blood glucose
Phlebotomy will be obtained while fasted 8+ hours and blood glucose will be measured as part of a comprehensive metabolic panel and reported in mg/dl. Lower concentrations are optimal.
Time frame: Change from day 0 (baseline) to day 30 post intervention supplementation.
Visceral fat percentage
Change in visceral fat as a percentage of total fat mass as measured by bioelectrical impedance (BIA). Lower values are optimal.
Time frame: Change from Day 0 (baseline), Day 30 (Crossover/Midpoint ), and Day 60 (end of study)
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Total body fat percentage
Change in total body fat as a percentage of total fat mass as measured by bioelectrical impedance (BIA). Lower values are optimal.
Time frame: Change from Day 0 (baseline), Day 30 (Crossover/Midpoint ), and Day 60 (end of study)
Stool microbiome composition
16S changes in microbiome alpha diversity.
Time frame: Change from Day 0 (baseline), Day 30 (Crossover/Midpoint ), and Day 60 (end of study)
Breath Hydrogen (ppm)
Breath hydrogen will be measured via QuinTron BreathTracker SC Analyzer every 30 minutes to 1.5 hours on days 21 and 51. Lower levels are optimal.
Time frame: Change from Day 0 (baseline), Day 30 (Crossover/Midpoint ), and Day 60 (end of study)
Breath Methane (ppm)
Breath methane will be measured via QuinTron BreathTracker SC Analyzer every 30minutes to 1.5 hours on days 21 and 51. Lower levels are optimal.
Time frame: Change from Day 0 (baseline), Day 30 (Crossover/Midpoint ), and Day 60 (end of study)
Physical Quality of Life
The SF-12 PCS (Short Form-12, Physical Component Score) is a health-related quality of life measure that assesses general physical functioning and well-being. SF-12 PCS scores range from 0-100 with higher scores indicating better general physical health.
Time frame: Change from Baseline (day 0), Crossover/Midpoint (day 30), and End of study (day 60)
Sleep and Physical Activity- accelerometry
Average minutes of total daily sleep and physical activity measured via garmin watch.
Time frame: Change from Baseline (day 0), Crossover/Midpoint (day 30), and End of study (day 60)
Total caloric intake
Three 24-hour dietary recalls will be obtained and entered into the and analyzed in the Nutrition Data System for Research (NDSR).
Time frame: Change from Baseline (day 0), Crossover/Midpoint (day 30), and End of study (day 60)
Mental Quality of Life
The SF-12 MCS (Short Form-12, Mental Component Score) is a health-related quality of life measure that assesses general mental health status. SF-12 MCS scores range from 0-100 with higher scores indicating better general mental health.
Time frame: Change from Baseline (day 0), Crossover/Midpoint (day 30), and End of study (day 60)