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Effect of protein supplementation during weight loss on older adult bone health

Award Number: K25AG058804
ORGANIZATION: NATIONAL INSTITUTE ON AGING
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: TRAINING/TRAINEESHIP
PERIOD OF PERFORMANCE START DATE: 02/15/2019
PERIOD OF PERFORMANCE END DATE: 11/30/2024

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Effect of protein supplementation during weight loss on older adult bone health - Project Summary. Dr. Weaver seeks this K25 mentored training award to expand her bioengineering research background in medical imaging and finite element modeling of trauma towards pursuit of an independent research career focused on reducing osteoporosis and fracture in older adults. Weight loss poses an increased risk of bone loss and fracture in older adults. The proposed research will test the overall hypothesis that higher dietary protein intake during and following weight loss will attenuate bone loss in older adults with obesity. Guided by an accomplished multidisciplinary mentoring team with expertise in aging, clinical trials, bone metabolism, nutrition, and radiology, the PI will: (1) Develop knowledge of gerontology and geriatric medicine, (2) Acquire training in the design and execution of clinical trials, 3) Obtain in-depth knowledge on bone metabolism and structure, including the influence of nutrition and weight loss, and 4) Develop expertise in dual-energy computed tomography (CT) acquisition and post-processing to measure volumetric bone mineral density, cortical thickness, and bone marrow adipose tissue. Dr. Weaver's training and research will take place at Wake Forest School of Medicine which has a strong history of clinical research in aging and an exceptional radiology infrastructure. The partnership with her co-mentor at Rutgers within the Department of Nutritional Sciences will provide additional resources and expertise related to the nutritional regulation of bone metabolism. The proposed ancillary study to the ongoing clinical trial, UPLIFT: Utilizing Protein During Weight Loss to Impact Physical Function, will examine bone health over 6 months of active weight loss, followed by 12 months of weight maintenance. Musculoskeletal phenotypes will be compared in older adults with obesity randomized to either: (1) a lower protein diet for weight loss and follow-up, (2) a higher protein diet for weight loss only, or (3) a higher protein diet for weight loss and follow-up. The ancillary study expands the UPLIFT trial by adding dual-energy CT scans of the lumbar spine and proximal femur at baseline, 6 months, and 18 months to compare the influence of a higher versus lower protein intake on: vertebral and femoral trabecular volumetric bone mineral density and cortical thickness (Primary Aim), bone marrow adiposity which may alter the trabecular matrix and affect bone strength (Secondary Aim 1), and bone strength and fracture risk predicted with subject-specific finite element modeling (Secondary Aim 2). The study will test if a higher protein diet improves bone outcomes during active weight loss (evaluated at 6 months), and if maintaining higher protein intake during weight maintenance further preserves bone (evaluated at 18 months). The proposed training and research plan will launch Dr. Weaver's career as an independent investigator focused on applying bioengineering techniques to: 1) develop translational tools for fracture prediction, and 2) assess osteoprotective interventions in clinical trials—ultimately leading to improved diagnostics, prognostic tools, clinical recommendations, and therapies for preventing osteoporosis and fracture in older adults.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $0 )
2025	2023	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	5	4/23/2025	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2023 ( Subtotal = $133,036 )
2023	2023	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	5	11/30/2022	NON-COMPETING CONTINUATION	$133,036
														Subtotal = $133,036

Issue Date FY: 2022 ( Subtotal = $133,762 )
2022	2022	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	4	12/6/2021	NON-COMPETING CONTINUATION	$133,762
														Subtotal = $133,762

Issue Date FY: 2021 ( Subtotal = $134,262 )
2021	2021	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	3	12/28/2020	NON-COMPETING CONTINUATION	$134,262
														Subtotal = $134,262

Issue Date FY: 2020 ( Subtotal = $135,243 )
2020	2020	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	2	12/26/2019	NON-COMPETING CONTINUATION	$135,243
														Subtotal = $135,243

Issue Date FY: 2019 ( Subtotal = $135,841 )
2019	2019	WAKE FOREST UNIVERSITY HEALTH SCIENCES	MEDICAL CENTER BLVD	WINSTON SALEM	NC	27157	FORSYTH	USA	Aging Research	000	1	2/8/2019	NEW	$135,841
														Subtotal = $135,841

Grand Total All Awards = $672,144

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Effect of protein supplementation during weight loss on older adult bone health

Award Number: K25AG058804

ORGANIZATION: NATIONAL INSTITUTE ON AGING

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: TRAINING/TRAINEESHIP

PERIOD OF PERFORMANCE START DATE: 02/15/2019

PERIOD OF PERFORMANCE END DATE: 11/30/2024

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