Here is the design of a clinical trial:

Official Title: Double-blind, Randomized, Cross-over Trial of Whole Hemp Seed Protein and Hemp Seed Protein Hydrolysate Derived Bioactive Peptide Consumption for Hypertension

Included conditions:
- Hypertension

Study Armgroups:
- {'label': 'Whole hemp seed protein', 'type': 'EXPERIMENTAL', 'description': '25 grams of hemp seed protein powder, twice a day', 'interventionNames': ['Other: Whole hemp seed protein']}
- {'label': 'Whole hemp seed protein plus bioactive peptides', 'type': 'EXPERIMENTAL', 'description': '22.5 grams of hemp seed protein and 2.5 grams of hemp seed protein hydrolysate derived bioactive peptides, twice a day', 'interventionNames': ['Other: Whole hemp seed protein plus bioactive peptides']}
- {'label': 'Casein protein', 'type': 'ACTIVE_COMPARATOR', 'description': '25 grams of protein powder, twice a day', 'interventionNames': ['Other: Casein protein']}

Interventions:
- {'type': 'OTHER', 'name': 'Whole hemp seed protein', 'description': 'The intervention was provided in the form of a smoothie.', 'armGroupLabels': ['Whole hemp seed protein']}
- {'type': 'OTHER', 'name': 'Whole hemp seed protein plus bioactive peptides', 'description': 'The intervention was provided in the form of a smoothie.', 'armGroupLabels': ['Whole hemp seed protein plus bioactive peptides']}
- {'type': 'OTHER', 'name': 'Casein protein', 'description': 'The intervention was provided in the form of a smoothie.', 'armGroupLabels': ['Casein protein']}

Primary Outcomes:
- {'measure': 'Change in 24 hour ambulatory blood pressure', 'description': 'Participants were fitted with an ambulatory blood pressure monitor (ABPM) for 24 hours. Continuous diastolic and systolic blood pressure were measured over 24 hours.', 'timeFrame': 'Measured at day 1 of phase 1 (baseline) and change from baseline ABP at week 6 of phase 1, 2 and 3'}

Please estimate the sample size based on the assumption: 
Power of 0.80 and significance level (α) of 0.05, with an allowance for potential participant dropout
Sample size
        A total sample size of 30 participants was calculated as required to detect a change in 4âmmHg in SBP with the proposed crossover design, using an estimated within-participant standard deviation of 5.45âmmHg and a power of 0.80 and Î±â=â0.05 [13]. A recruitment goal of 35 participants has been set to account for the potential participant drop out.