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Metabolisk sundhed, knogler og nødder under vægttab hos voksne (BERN)

3. november 2026 opdateret af: Sue A. Shapses, Ph.D., RD, Rutgers, The State University of New Jersey

Metabolisk sundhed, knogler og nødder kilder til fedtsyrer under vægttab hos voksne

The aging population is rapidly increasing, and it is important to identify dietary factors that can prevent disease and promote health in this group. Legumes, such as peanuts, are a plant-based food high in protein and unsaturated fat making this a healthy choice but are not consumed frequently enough in older adults. Studies have shown that regular nut consumption is associated with lower adiposity and reduced weight gain, and several dietary pattern studies indicate that nuts and legumes are associated with better bone health. In addition, our preliminary translational data indicates that a higher monounsaturated fatty acid (MUFA) intake is associated with improved bone mineral density (BMD) and quality. Given these findings, the proposed study aims to examine the impact of consuming peanut products on bone health, metabolic health (e.g., serum glucose, insulin, lipids and inflammation), markers of brain and sleep health, and physical function in overweight and obese older adults before and after a six-month weight loss intervention using a randomized controlled design. The results of this study have the potential to provide valuable insights into the role of peanuts as a sources of fatty acids in promoting health and preventing disease in at-risk adults.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The aging population is rapidly increasing, and it is important to identify dietary factors that can prevent disease and promote health in this group. Legumes, such as peanuts, are a plant-based food high in protein and unsaturated fat making this a healthy choice but are not consumed frequently enough in older adults. Studies have shown that regular nut consumption is associated with lower adiposity and reduced weight gain, and several dietary pattern studies indicate that nuts and legumes are associated with better bone health. In addition, our preliminary translational data indicates that a higher monounsaturated fatty acid (MUFA) intake is associated with improved bone mineral density (BMD) and quality. Given these findings, the proposed study aims to examine the impact of consuming peanut products on bone health, metabolic health (e.g., serum glucose, insulin, lipids and inflammation), markers of brain and sleep health, and physical function in overweight and obese older adults before and after a six-month weight loss intervention using a randomized controlled design. The results of this study have the potential to provide valuable insights into the role of peanuts as a sources of fatty acids in promoting health and preventing disease in at-risk adults.

Specific Aims

  1. To determine whether consuming peanuts daily compared to a control group (no nuts) during lifestyle intervention has a differential effect on bone mineral density in older adults who are overweight or obese.
  2. To determine the temporal change in bone turnover biomarkers and bone regulating hormones during weight loss in the diet in older adults with overweight or obesity. Exploratory outcomes will examine metabolic biomarkers (serum glucose, insulin, lipid levels), brain (MRI and biomarkers) and sleep health and physical function.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

44

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

50 år til 75 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Men and postmenopausal women (>2 years since last menses), ages 50-75 years
  • Body mass index (25-42 kg/m2) or evidence of pre-clinical obesity.
  • Agree to be randomly assigned to consume a daily peanut snack or nut-free snack for 24 weeks
  • Must attend on-site visits (about 10) in New Brunswick, NJ, USA (transportation/reimbursement for travel not included)

Exclusion Criteria:

  • Peanut allergies or intolerances
  • Individuals with >5% weight loss in the past 3 months or those with extreme dietary/physical activity habits.
  • An inability to follow the experimental intervention or to perform the required specimen collections.
  • Individuals with significant psychiatric or food disorders.
  • Current diagnosis, or history of cancer in past 3 years.
  • Current diagnosis or history of bone diseases, type I or II diabetes if using insulin, gastrointestinal disease, hyperparathyroidism, Alzheimer's disease, mild cognitive impairment, untreated thyroid disease, significant immune, hepatic, cardiac, or renal disease.
  • History of major surgery in the past 6 months
  • Regular use of medications that affect bone metabolism, including bisphosphonates or hormone replacement.
  • Regular use of medications for cholecystitis, urinary tract infection, severe organic diseases including coronary heart disease, myocardial infarction, infectious diseases including pulmonary tuberculosis and AIDS.
  • Alcohol or illicit drug abuse
  • Any other condition deemed by the Research Physician that would prevent participation in the study, e.g. participation in another clinical research project that may interfere with the results of this study.
  • Participation in another clinical interventional research trial

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Peanut

Peanut products

Subjects will receive a daily peanut snack and nutrition education-behavior modification instructions for weight loss

Aktiv komparator: Nut-free snack

Nut-free snack

Subjects will receive a daily no-nut snack and nutrition education-behavior modification instructions for weight loss

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Bone Mineral Density (BMD - total hip)
Tidsramme: Change from baseline to 24 weeks

dual energy x-ray absorptiometry; g/cm2

Change from baseline to 24 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Soft tissue (lean and fat mass)
Tidsramme: Change from baseline to 24 weeks

dual energy x-ray absorptiometry (kg)

Change from baseline to 24 weeks
Serum bone turnover
Tidsramme: Change from baseline to 24 weeks

Serum levels (ng/mL) of carboxyterminal crosslinking telopeptide of type I collagen (CTX), procollagen type-I aminoterminal propeptide (PINP), and osteocalcin

Change from baseline to 24 weeks
Areal BMD
Tidsramme: Change from baseline to 24 weeks

Dual energy x-ray absorptiometry: lumbar spine, femoral neck, radius, total body, g/cm2

Change from baseline to 24 weeks
Weight loss
Tidsramme: Change from baseline to 24 weeks

Body weight in kg

Change from baseline to 24 weeks
Trabecular BMD
Tidsramme: Change from baseline to 24 weeks

peripheral quantified computed tomography, g/cm3

Change from baseline to 24 weeks
Trabecular separation
Tidsramme: Change from baseline to 24 weeks

peripheral quantitative computed tomography, mm

Change from baseline to 24 weeks
Trabecular bone volume / tissue volume
Tidsramme: Change from baseline to 24 weeks

peripheral quantitative computed tomography, BV/TV (%)

Change from baseline to 24 weeks
Cortical and total (volumetric BMD)
Tidsramme: change from baseline to 24 weeks

peripheral quantitative computed tomography, g/cm3

change from baseline to 24 weeks
Cortical (thickness)
Tidsramme: change from baseline to 24 weeks

peripheral quantitative computed tomography, mm

change from baseline to 24 weeks
Cortical (porosity)
Tidsramme: change from baseline to 24 weeks

peripheral quantitative computed tomography, %

change from baseline to 24 weeks
Inflammatory Markers
Tidsramme: Change from baseline to 24 weeks

Serum levels of high-sensitivity C-reactive protein (hsCRP), interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α)

Change from baseline to 24 weeks
Lipid panel
Tidsramme: Change in baseline and 24 weeks

serum LDL, HDL, triglycerides (mg/dL)

Change in baseline and 24 weeks
Cognition
Tidsramme: Change from baseline to 24 weeks

Neuropsychological Test Automated Battery (CANTAB)

Change from baseline to 24 weeks
Physical and sleep activity level
Tidsramme: change from baseline to 24 weeks

Time spent in sleep, sedentary activity, and moderate-to-vigorous activity (minutes) using Actigraphy

change from baseline to 24 weeks
Sleep architecture (EEG)
Tidsramme: Baseline and 24 weeks

Time spent in rapid eye movement (REM) sleep, and non-REM stages 1-3 sleep (minutes) and as a percentage of total sleep time

Baseline and 24 weeks
Subjective Sleep
Tidsramme: Change from baseline to 24 weeks

Sleep Diary will be used to assess quality of the previous night's sleep using a Likert scale (higher scores reflect higher quality sleep)

Change from baseline to 24 weeks
Body Temperature (CALERA)
Tidsramme: Change from baseline to 24 weeks

(Core, skin, heat flux)

Change from baseline to 24 weeks

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Short Physical Performance Battery (SPPB)
Tidsramme: Change from baseline to 24 weeks

Modified SPPB includes chair stand, balance test on1 leg and walk test (0-12; higher score is better)

Change from baseline to 24 weeks
Arm Curl
Tidsramme: Change from baseline to 24 weeks

Dumbbell weight (More arm curls are better. Score interpretation is age and sex dependent)

Change from baseline to 24 weeks
Hand Grip
Tidsramme: Change from baseline to 24 weeks

Dynamometer (kilograms, higher is better)

Change from baseline to 24 weeks
Circumferences
Tidsramme: Change from baseline to 24 weeks

tape measure (waist and hip)

Change from baseline to 24 weeks
Glucose and insulin
Tidsramme: Change from baseline and 24 weeks

Serum (mg/dL)

Change from baseline and 24 weeks
Parathyroid hormone
Tidsramme: Change from baseline to 24 weeks

serum (pg/mL)

Change from baseline to 24 weeks
25-hydroxyvitamin D (25OHD)
Tidsramme: Change from baseline to 24 weeks

Serum (ng/mL)

Change from baseline to 24 weeks
Estradiol
Tidsramme: Change from baseline to 24 weeks

serum (pg/mL)

Change from baseline to 24 weeks
Eating self-efficacy
Tidsramme: Change from baseline to 24 weeks

Weight lifestyle efficacy questionnaire short-form (0-80; higher score is better)

Change from baseline to 24 weeks
Diet Quality Score
Tidsramme: Change from baseline to 24 weeks

nutrient analysis software (Healthy Eating Index 0-100; higher score is better)

Change from baseline to 24 weeks
Microbiota
Tidsramme: Baseline and 24 weeks

stool

Baseline and 24 weeks
Blood pressure (systolic and diastolic)
Tidsramme: Change from baseline to 24 weeks

sphygmomanometer (mmHg)

Change from baseline to 24 weeks
Quality of Sleep
Tidsramme: Change from baseline and 24 weeks

Pittsburgh Sleep Quality Index scores (0-21; higher score is worse)

Change from baseline and 24 weeks
MRI of the brain
Tidsramme: Baseline to 24 weeks

Tissue/Blood (1 hour of MRI time)

Baseline to 24 weeks
Morningness-Eveningness Questionnaire
Tidsramme: Baseline and after 24 weeks

Score (16-86; higher score is morningness vs low score is eveningness)

Baseline and after 24 weeks
Biomarkers of brain health
Tidsramme: Baseline and after 24 weeks

Serum amyloid-beta (42,40) and tau markers (217, 181), BDNF, NfL

Baseline and after 24 weeks
Intestinal Permeability biomarker
Tidsramme: Change from baseline to 24 weeks

Serum Zonulin

Change from baseline to 24 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

30. oktober 2025

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

21. marts 2025

Først indsendt, der opfyldte QC-kriterier

21. april 2025

Først opslået (Faktiske)

29. april 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

6. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. november 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • Pro2023001457
  • 1156048 (Andet bevillings-/finansieringsnummer: TPIF)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Individual participant data that underlie the results and after deidentification will be shared upon request for researchers who provide a methodologically sound proposal (and IRB approved).

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