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Effect of a High-Protein Diet and/or High-Intensity Training on Metabolic Syndrome (EPHIT)

24. september 2015 opdateret af: Ellen Evans, University of Georgia

The E-PHIT Study: Eggs, Protein, and High-Intensity Training: A Diabetes Prevention Program for Women

The objective of this study is to determine the combined effects of a high-protein diet and high-intensity training on metabolic syndrome risk factors in women aged 30-65.

Studieoversigt

Detaljeret beskrivelse

High-protein diet interventions have been shown to be effective in reducing triglycerides and increasing high-density lipoprotein cholesterol concentrations. Low-volume, high-intensity cycling exercise has shown to elicit positive effects on metabolic syndrome risk factors such as triglyceride concentrations. The objective of this study was to determine the combined effects of a high-protein, reduced carbohydrate diet and high-intensity interval training on metabolic syndrome risk factors in women. The second primary aim is to investigate the effect of the macronutrient content of the post-exercise meal consumed following an acute bout of interval training on postprandial metabolism.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

49

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

    • Georgia
      • Athens, Georgia, Forenede Stater, 30602
        • Body Composition and Metabolism Lab, Ramsey Center, University of Georgia

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

30 år til 65 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  • Women aged 30-65 yrs of age, inclusive
  • Waist circumference > 88 cm.
  • Weight stable (within 2 kg) for past 6 mo
  • Sedentary/Low-active (defined as <300minutes/wk light or moderate activity, with no vigorous activity in last 6 months)
  • At risk for MetS [defined as having 2 of the following 4 factors: 1) hypertriglyceridemia defined as > 150 mg/mL, 2) low HDL cholesterol defined < 50 or on medication, 3) elevated blood pressure defined as > 130/>85 Hg or taking medications or 4) hyperglycemia defined as fasting blood glucose > 100 or glycated hemoglobin > 6.5 or taking medications.
  • Willing to be randomized to the four treatment groups

Exclusion Criteria:

  • Any chronic disease/condition that would not permit exercise or dietary restriction (including egg allergy or refusal to incorporate eggs into the diet) or alter interpretation of data. Examples include, but are not limited to:

    1. cardiopulmonary disease (e.g. recent myocardial infarction, unstable angina, stroke) or unstable disease; 2) severe orthopedic, musculoskeletal or neuromuscular impairments that would contradict exercise; 3) sensory impairments that interfere with following directions; 4) diagnosis of dementia; 5) history of malignancy during the past 5 yr; 6) medication use that impacts primary outcomes of interest (e.g. statins); 7) weight greater than 400 pounds due to DXA weight and size limitations; 8) Uncontrolled blood pressure defined as > 160/>100 Hg.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Higher Protein Diet (PRO)
Participants in the PRO and PRO+EX groups will meet weekly with a diet specialist on staff to monitor their intake and compliance with the high protein diet.
Andre navne:
  • Higher Protein Reduced Carbohydrate Diet
Aktiv komparator: Higher Carbohydrate Diet (CARB)
Participants in the CHO and CHO+EX groups will meet weekly with a diet specialist on staff to monitor their intake and compliance with the higher carbohydrate diet.
Andre navne:
  • Conventional Higher Carbohydrate Diet
Aktiv komparator: PRO & Interval Exercise (PRO+EX)
Participants in the PRO and PRO+EX groups will meet weekly with a diet specialist on staff to monitor their intake and compliance with the high protein diet.
Andre navne:
  • Higher Protein Reduced Carbohydrate Diet
Participants will undergo sprint interval training on a cycle ergometer 3 times weekly for 6 weeks. Each training session begins with a 5-minute active warm-up. The warm-up is followed by 4-7 bouts of 30 seconds of all-out sprints and 4 minutes of active recovery.
Andre navne:
  • Højintensiv træning
  • Sprint Interval Cycling
Aktiv komparator: CARB & Interval Exercise (CARB+EX)
Participants in the CHO and CHO+EX groups will meet weekly with a diet specialist on staff to monitor their intake and compliance with the higher carbohydrate diet.
Andre navne:
  • Conventional Higher Carbohydrate Diet
Participants will undergo sprint interval training on a cycle ergometer 3 times weekly for 6 weeks. Each training session begins with a 5-minute active warm-up. The warm-up is followed by 4-7 bouts of 30 seconds of all-out sprints and 4 minutes of active recovery.
Andre navne:
  • Højintensiv træning
  • Sprint Interval Cycling

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Metabolic Syndrome Risk Factors
Tidsramme: Change [Baseline to 6 Weeks]
  1. Post-Prandial Lipemia (and/or metabolic responses including insulin, glucose, triglycerides and free-fatty acids) to: a) a high fat meal challenge and b) a meal challenge similar to the higher protein or carbohydrate treatment arm. After an overnight fast and baseline blood draws, participants will consume a small meal and have their blood sampled every 30 minutes for 3 hours.
  2. Biomarkers for Cardiovascular Disease and Diabetes Mellitus. Fasting blood samples for serum lipids, glucose, insulin and systemic inflammation (C-reactive protein) will be taken after an overnight fast.
Change [Baseline to 6 Weeks]

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Satiety
Tidsramme: Change [Baseline to 6 weeks]
Satiety will be assessed using questionnaires
Change [Baseline to 6 weeks]

Samarbejdspartnere og efterforskere

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

Efterforskere

  • Ledende efterforsker: Ellen M. Evans, PhD, University of Georgia
  • Ledende efterforsker: Kirk J. Cureton, PhD, University of Georgia

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

1. februar 2012

Primær færdiggørelse (Faktiske)

1. marts 2013

Studieafslutning (Faktiske)

1. marts 2013

Datoer for studieregistrering

Først indsendt

15. juni 2012

Først indsendt, der opfyldte QC-kriterier

15. juni 2012

Først opslået (Skøn)

19. juni 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

25. september 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. september 2015

Sidst verificeret

1. september 2015

Mere information

Begreber relateret til denne undersøgelse

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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