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Hemp Seed Protein and Bioactive Peptides Consumption for Hypertension

U

University of Manitoba

Status

Completed

Conditions

Hypertension

Treatments

Other: Whole hemp seed protein plus bioactive peptides
Other: Casein protein
Other: Whole hemp seed protein

Study type

Interventional

Funder types

Other

Identifiers

NCT03508895
HS20390 (B2016:125)

Details and patient eligibility

About

This clinical trial is being conducted to study the effect of whole hemp seed protein, hemp seed protein hydrolysate derived bioactive peptide and casein protein consumption on systolic and diastolic ambulatory blood pressure. This study is will be conducted in 35 hypertensive participants aged between ≥18 and ≤75 yrs who have systolic blood pressure higher than 130 mmHg or diastolic blood pressure ≤ 110 mmHg. The study will consist of 3 periods of 42 days each during which participants will consume assigned treatment. Consumption of treatments will be from days 1 to 42. There will also be a washout period of a minimum of 14 days between the 3 treatment periods where the participants can consume their habitual diets. The entire study is designed to take 22 weeks from start to completion. The participants will consume the assigned treatment twice a day. The treatments are in the form of a smoothie and the smoothies will consist of frozen fruit, fruit juice, frozen yoghurt/sorbet, and 25 g of protein from treatment protein powder which is 25 grams of casein protein, 25 grams of hemp seed protein, or 22.5 grams of hemp seed protein and 2.5 grams of hemp seed protein hydrolysate derived bioactive peptides. On days 1 and 42 of each treatment period of the trial, body weight, waist and hip circumference, blood pressure, pulse wave velocity (PWV) and augmentation index (AI) will be measured. Ambulatory blood pressure (ABP) over 24 hours will also be measured on day 1 of phase 1 and day 42 of each treatment period of the trial.

Enrollment

35 patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • BMI: 18.5-40 kg/m2
  • Systolic blood pressure between 130-160 mmHg
  • Diastolic blood pressure ≤ 110 mmHg
  • Ability and willingness to give informed consent to participate in the trial
  • Willingness to complete questionnaires, records, and diaries associated with the study and to complete all clinic visits
  • Willingness to fast 10-12 hours before blood samples and abstain from alcohol two days prior to blood sampling and BP measurement and abstain from coffee and physical exercise at least 14 and 4 hours before measurement respectively
  • Negative pregnancy test for women with child-bearing potential

Exclusion criteria

  • Unable to speak/read in English
  • Active cardiovascular disease including stroke, congestive heart failure, myocardial infarction, unstable angina pectoris, coronary artery bypass graft, percutaneous transluminal coronary angioplasty, temporal ischemic attacks, secondary hypertension, type 1 or type 2 diabetes, anemia, abnormal electrolytes, proteinuria, and abnormal liver, kidney or thyroid function
  • History of cancer or malignancy in the last 5 years, or any metabolic disease, gastrointestinal disorder or other clinically significant disease/disorder which could interfere with the results of the study or the safety of the participant
  • Taking lipid or blood pressure lowering medications or any type of supplements for less than 3 months (Note: all medications or supplements will be permitted if they are on a stable dose for more than 3 months before the start of the study)
  • Smokers, tobacco/snuff/nicotine users, recreational drug users
  • Consuming more than 14 alcoholic beverages a week
  • Any dietary restrictions preventing from consuming the trial treatments
  • Weight gain or loss greater than 5 kg in the past three months
  • Exercising > 15 miles/wk or 4,000 kcal/wk
  • Known to be pregnant or breast-feeding or planning on becoming pregnant during the trial period
  • Having clinically significant biochemistry defined as: Sodium: <134 mmol/l, >148 mmol/l; fasting glucose: > 6.1 mmol/L; LDL-C ≥4.9 mmol/L or any other clinically significant abnormality in hematology and/or biochemistry at the investigator's discretion

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Crossover Assignment

Masking

Triple Blind

35 participants in 3 patient groups

Whole hemp seed protein
Experimental group
Description:
25 grams of hemp seed protein powder, twice a day
Treatment:
Other: Whole hemp seed protein
Whole hemp seed protein plus bioactive peptides
Experimental group
Description:
22.5 grams of hemp seed protein and 2.5 grams of hemp seed protein hydrolysate derived bioactive peptides, twice a day
Treatment:
Other: Whole hemp seed protein plus bioactive peptides
Casein protein
Active Comparator group
Description:
25 grams of protein powder, twice a day
Treatment:
Other: Casein protein

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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