Blood Pressure and Heart Rate Responses following Dietary Protein Intake in Older Men

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dc.citation.issue9
dc.citation.volume14
dc.contributor.authorOberoi A
dc.contributor.authorGiezenaar C
dc.contributor.authorLange K
dc.contributor.authorJones KL
dc.contributor.authorHorowitz M
dc.contributor.authorChapman I
dc.contributor.authorSoenen S
dc.coverage.spatialSwitzerland
dc.date.available2022-05-03
dc.date.available2022-04-28
dc.date.issued2022-05-03
dc.description.abstractPostprandial hypotension (PPH) occurs frequently in older people >65 years old. Protein-rich supplements, particularly whey protein (WP), are increasingly used by older people for various health benefits. We have reported that 70 g WP drinks cause significant, and in some cases marked, falls in blood pressure (BP) in older men. The effects of lower, more widely used, doses (~30 g) on systolic (SBP) and diastolic (DBP) blood pressure and heart rate (HR) are not known. In a randomized order, eight older men (age: 72 ± 1 years; body mass index (BMI): 25 ± 1 kg/m2) after overnight fast ingested a drink containing (i) a non-caloric control (~2 kcal), (ii) 30 g of whey protein (120 kcal; ‘WP30’), or (iii) 70 g of whey protein (280 kcal; ‘WP70’). The BP and HR were measured in this pilot study with an automated device before and at 3-min intervals for 180 min following drink ingestion. Drink condition effects were determined by repeated-measures ANOVA. The SBP decreased after both WP drinks compared to the control (p = 0.016), particularly between 120 and 180 min, with no difference in the effects of WP30 and WP70. The SBP decreased by ≥20 mmHg in more than 50% of people after both WP drinks (WP30: 63%; WP70: 75%) compared to 38% after the control. The maximum fall in the SBP occurred during the third hour, with the nadir occurring latest after WP70. The DBP decreased non-significantly by several mmHg more after the WP drinks than after the control. The maximum HR increases occurred during the third hour, with the greatest increase after WP70. The SBP decreased after both WP drinks compared to the control, with the effects most evident between 120 and 180 min. Accordingly, ingestion of even relatively modest protein loads in older men has the potential to cause PPH.
dc.description.publication-statusPublished online
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/35565880
dc.identifiernu14091913
dc.identifier.citationNutrients, 2022, 14 (9)
dc.identifier.doi10.3390/nu14091913
dc.identifier.eissn2072-6643
dc.identifier.elements-id453203
dc.identifier.harvestedMassey_Dark
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.relation.isPartOfNutrients
dc.rightsCC BY
dc.subjectaging
dc.subjectblood pressure diet
dc.subjectheart rate
dc.subjectwhey protein
dc.subjectAged
dc.subjectBlood Pressure
dc.subjectDietary Proteins
dc.subjectHeart Rate
dc.subjectHumans
dc.subjectHypotension
dc.subjectMale
dc.subjectPilot Projects
dc.subjectWhey Proteins
dc.subject.anzsrc0908 Food Sciences
dc.subject.anzsrc1111 Nutrition and Dietetics
dc.titleBlood Pressure and Heart Rate Responses following Dietary Protein Intake in Older Men
dc.typeJournal article
pubs.notesNot known
pubs.organisational-group/Massey University
pubs.organisational-group/Massey University/College of Sciences
pubs.organisational-group/Massey University/College of Sciences/School of Food and Advanced Technology
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