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Lim C, Janssen TAH, Currier BS, Paramanantharajah N, McKendry J, Abou Sawan S, Phillips SM. Muscle Protein Synthesis in Response to Plant-Based Protein Isolates With and Without Added Leucine Versus Whey Protein in Young Men and Women. Curr Dev Nutr 2024; 8:103769. [PMID: 38846451 PMCID: PMC11153912 DOI: 10.1016/j.cdnut.2024.103769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/03/2024] [Accepted: 05/06/2024] [Indexed: 06/09/2024] Open
Abstract
Background Plant-based protein supplements often contain lower amounts of leucine and other essential amino acids (EAAs), potentially making them less effective in stimulating muscle protein synthesis (MPS) than animal-based proteins. Combining plant proteins could improve the EAA profile and more effectively support MPS. Objectives The aim of this study was to determine the effect of a novel plant-based blend protein (PBP), PBP with added leucine (PBP + Leu) to levels equivalent to whey protein isolate (WHEY) on aminoacidemia and MPS responses in young men and women. We hypothesized that PBP + Leu would stimulate MPS equivalent to WHEY, and both would be greater than PBP. Methods We employed a randomized, double-blind, crossover study consisting of 3 separate study visits to compare PBP, PBP + Leu, and WHEY. To measure MPS response to ingestion of the supplements, a primed continuous infusion of L-[ring13C6] phenylalanine was administered for 8 h at each study visit. Skeletal muscle tissue and blood samples were collected to measure aminoacidemia and MPS. Results All protein supplements increased mixed MPS above postabsorptive levels (P < 0.001). However, MPS increase following ingestion of PBP was less than that following ingestion of PBP + Leu (P = 0.002) and WHEY (P = 0.046). There were no differences in MPS between PBP + Leu and WHEY (P = 0.052). Conclusions Consumption of PBP isolate with added leucine stimulated MPS to a similar extent as whey protein in young men and women. PBPs containing higher leucine content promote anabolism to a similar extent as animal-based proteins.This study was registered at clinicaltrials.gov as NCT05139160.
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Affiliation(s)
| | | | - Brad S Currier
- Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
| | | | - James McKendry
- Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
| | - Sidney Abou Sawan
- Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
| | - Stuart M Phillips
- Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada
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Dehnavi Z, Barghchi H, Esfehani AJ, Barati M, Khorasanchi Z, Farsi F, Ostad AN, Ranjbar G, Rezvani R, Gorgani MR, Safarian M. Animal and plant-based proteins have different postprandial effects on energy expenditure, glycemia, insulinemia, and lipemia: A review of controlled clinical trials. Food Sci Nutr 2023; 11:4398-4408. [PMID: 37576026 PMCID: PMC10420774 DOI: 10.1002/fsn3.3417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 08/15/2023] Open
Abstract
Dietary proteins have been shown to stimulate thermogenesis, increase satiety, and improve insulin sensitivity in the short and long term. Animal-based proteins (AP) and plant-based proteins (PP) have different amino acid profiles, bioavailability, and digestibility, so it seems to have various short- and long-term effects on metabolic responses. This review aimed to compare the findings of controlled clinical trials on postprandial effects of dietary Aps versus PPs on energy expenditure (EE), lipemia, glycemia, and insulinemia. Data are inconclusive regarding the postprandial effects of APs and PPs. However, there is some evidence indicating that APs increase postprandial EE, DIT, and SO more than PPs. With lipemia and glycemia, most studies showed that APs reduce or delay postprandial glycemia and lipemia and increase insulinemia more than PPs. The difference in amino acid composition, digestion and absorption rate, and gastric emptying rate between APs and PPs explains this difference.
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Affiliation(s)
- Zahra Dehnavi
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
- Student Research Committee, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Hanieh Barghchi
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
- Student Research Committee, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | | | - Mehdi Barati
- Department of Pathobiology and Laboratory SciencesNorth Khorasan University of Medical SciencesBojnurdIran
| | - Zahra Khorasanchi
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
- Student Research Committee, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Farima Farsi
- Student Research Committee, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
- School of MedicineMashhad University of Medical Sciences (MUMS)MashhadIran
| | | | - Golnaz Ranjbar
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
| | - Reza Rezvani
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
| | - Mitra Rezaie Gorgani
- Department of Nutrition, School of MedicineMashhad University of Medical SciencesMashhadIran
| | - Mohammad Safarian
- Metabolic Syndrome Research CentreMashhad University of Medical SciencesMashhadIran
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Ji A, Chen W, Zhang T, Shi R, Wang X, Wang Y, Xu H, Li D. Whey protein and soy protein prevent obesity by upregulating uncoupling protein 1 to activate brown adipose tissue and promote white adipose tissue browning in high-fat diet-fed mice. Food Funct 2022; 13:12836-12851. [PMID: 36440964 DOI: 10.1039/d2fo01935c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
There are inconsistent conclusions regarding the effect of whey protein and soy protein supplementation on obesity, and the underlying mechanisms of a high-protein diet for reducing weight gain remain to be elucidated. The aim of the present study was to investigate the preventive effect of whey protein and soy protein on obesity and its possible mechanism. Eighty-four male C57BL/6J mice were randomly divided into seven dietary groups: control group (10% fat) and 6 groups fed with a high-fat diet (HFD): 10% whey protein isolate (WPI), 20% WPI, 30% WPI, 10% soy protein isolate (SPI), 20% SPI and 30% SPI for 12 weeks. Compared with the 20% SPI group, the 20% WPI group had a significantly lower body weight, serum levels of insulin, total cholesterol and leptin, weight of inguinal white adipose tissue (iWAT), and size of adipocytes in iWAT and epididymal white adipose tissue (eWAT). The body mass index (BMI) and the Lee index were significantly lower in the WPI groups than those in the SPI groups at the same protein level. The body weight, body weight gain and BMI were significantly lower with the decreasing ratio of protein to carbohydrate (P/C). Compared with the 20% SPI group, the expressions of browning-related genes such as UCP1 (uncoupling protein 1), PGC-1α, AMPKα and Cidea and the protein expression of UCP1 were significantly higher in brown adipose tissue (BAT) and iWAT in the 20% WPI group. Moreover, the expressions of lipogenesis-related genes such as SREBP1c, PPARγ, LPL and DGAT1 in BAT, iWAT and eWAT in the 10% WPI group were significantly lower compared with the 10% SPI group. In conclusion, whey protein was more effective than soy protein in preventing obesity in mice, probably by suppressing lipogenesis in adipose tissues, activating BAT and promoting the browning of iWAT. In addition, lowering the P/C ratio was beneficial for combating obesity in the context of a HFD.
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Affiliation(s)
- Andong Ji
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Wei Chen
- Department of Clinical Nutrition, Chinese Academy of Medical Sciences-Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - Tianyu Zhang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Runjia Shi
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Xinqi Wang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Yan Wang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Huina Xu
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China.
| | - Duo Li
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao 266071, China. .,Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.,Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168, Australia
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Sekgala MD, Opperman M, Mpahleni B, Mchiza ZJR. Association between Macronutrient and Fatty Acid Consumption and Metabolic Syndrome: A South African Taxi Driver Survey. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15452. [PMID: 36497525 PMCID: PMC9737240 DOI: 10.3390/ijerph192315452] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
We aimed to examine the association between macronutrient and fatty acid intake and metabolic syndrome (MetS) and its components in South African male mini-bus taxi drivers. One hundred and eighty-five (n = 185) male taxi drivers, aged 20 years and older, who operate in the Cape Town metropole, South Africa, were included. The International Diabetes Federation (IDF) algorithm was used to define MetS. The association between macronutrient and fatty acid intake (assessed using 24 h recall) and MetS were analyzed using multivariable nutrient density substitution models. Overall, protein consumption significantly increased the likelihood of high blood pressure (HBP) and significantly lowered the likelihood of having low levels of high-density lipoprotein cholesterol (HDL-C). In an isoenergetic state, the intake of protein instead of carbohydrates (CHOs) and total fat, reduced the likelihood of elevated triglycerides by 6.7% and 6.6%, respectively. The intake of CHOs instead of protein and total fat, reduced the likelihood of HBP by 2.2% and 2.8%, respectively. In the same isoenergetic state, the intake of saturated fatty acids (SFAs) instead of mono-unsaturated fatty acids (MUFAs) increased the likelihood of HBP by 9.8%, whereas the intake of polyunsaturated fatty acids (PUFAs) instead of SFAs decreased the likelihood of HBP by 9.4%. The current study showed that when total food energy intake is kept constant, a diet that is high in protein, CHOs and PUFAs reduces triglycerides and BP, whereas the intake of total fat and SFAs had the opposite effect. It should, however, be noted that these outcomes were produced using mathematical models, as such we recommend further prospective studies in real life that will reveal the actual associations between the consumption of macronutrients and fatty acids and MetS and its components.
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Affiliation(s)
- Machoene Derrick Sekgala
- School of Public Health, University of the Western Cape, Bellville 7535, South Africa
- Human and Social Capabilities, Human Sciences Research Council, Cape Town 8000, South Africa
| | - Maretha Opperman
- Functional Foods Research Unit, Department of Biotechnology and Consumer Science, Cape Peninsula University of Technology, Cape Town 7535, South Africa
| | - Buhle Mpahleni
- Functional Foods Research Unit, Department of Biotechnology and Consumer Science, Cape Peninsula University of Technology, Cape Town 7535, South Africa
| | - Zandile June-Rose Mchiza
- School of Public Health, University of the Western Cape, Bellville 7535, South Africa
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg, Cape Town 7505, South Africa
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Acute Flaxseed Intake Reduces Postprandial Glycemia in Subjects with Type 2 Diabetes: A Randomized Crossover Clinical Trial. Nutrients 2022; 14:nu14183736. [PMID: 36145115 PMCID: PMC9503020 DOI: 10.3390/nu14183736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Postprandial glycemic excursions are associated with impairment control of diabetes mellitus. Long-term consumption of flaxseed can lower blood glucose levels; however, its effects on the postprandial glycemic response remain unknown. Therefore, this study aimed to evaluate the acute effects of raw flaxseed consumption on the 2 h postprandial glycemic curve in men with type 2 diabetes mellitus (T2DM). Methods: This was a randomized crossover clinical trial. Nineteen men with T2DM were randomly assigned a standardized breakfast without (control) or with a previous intake of 15 g of ground raw golden flaxseed (flax). Glycemia was measured at fasting and postprandial at 15, 30, 45, 60, 90, and 120 min. Palatability markers (visual appeal, smell, and pleasantness of taste) and taste intensity (sweetness, saltiness, bitterness, sourness, and creaminess) were evaluated. Results: The peak glucose rise and the 2 h AUC glycemic response reduced in the flax group by 17% (p = 0.001) and 24% (p < 0.001), respectively. The glucose peak time, palatability, and taste parameters did not differ between the two groups. Conclusions: Ingestion of 15 g of ground raw golden flaxseed before breakfast decreases the 2 h postprandial glycemic response in men with T2DM.
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Messina M, Duncan A, Messina V, Lynch H, Kiel J, Erdman JW. The health effects of soy: A reference guide for health professionals. Front Nutr 2022; 9:970364. [PMID: 36034914 PMCID: PMC9410752 DOI: 10.3389/fnut.2022.970364] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/25/2022] [Indexed: 11/22/2022] Open
Abstract
Soy is a hotly debated and widely discussed topic in the field of nutrition. However, health practitioners may be ill-equipped to counsel clients and patients about the use of soyfoods because of the enormous, and often contradictory, amount of research that has been published over the past 30 years. As interest in plant-based diets increases, there will be increased pressure for practitioners to gain a working knowledge of this area. The purpose of this review is to provide concise literature summaries (400-500 words) along with a short perspective on the current state of knowledge of a wide range of topics related to soy, from the cholesterol-lowering effects of soy protein to the impact of isoflavones on breast cancer risk. In addition to the literature summaries, general background information on soyfoods, soy protein, and isoflavones is provided. This analysis can serve as a tool for health professionals to be used when discussing soyfoods with their clients and patients.
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Affiliation(s)
- Mark Messina
- Soy Nutrition Institute Global, Washington, DC, United States
| | - Alison Duncan
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | | | - Heidi Lynch
- Kinesiology Department, Point Loma Nazarene University, San Diego, CA, United States
| | - Jessica Kiel
- Scientific and Clinical Affairs, Medifast Inc., Baltimore, MD, United States
| | - John W. Erdman
- Division of Nutritional Sciences and Beckman Institute, Department of Food Science and Human Nutrition, University of Illinois at Urbana/Champaign, Urbana, IL, United States
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Comparative Assessment of the Acute Effects of Whey, Rice and Potato Protein Isolate Intake on Markers of Glycaemic Regulation and Appetite in Healthy Males Using a Randomised Study Design. Nutrients 2021; 13:nu13072157. [PMID: 34201703 PMCID: PMC8308460 DOI: 10.3390/nu13072157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/15/2021] [Accepted: 06/18/2021] [Indexed: 01/16/2023] Open
Abstract
Global protein consumption has been increasing for decades due to changes in demographics and consumer shifts towards higher protein intake to gain health benefits in performance nutrition and appetite regulation. Plant-derived proteins may provide a more environmentally sustainable alternative to animal-derived proteins. This study, therefore, aimed to investigate, for the first time, the acute effects on glycaemic indices, gut hormones, and subjective appetite ratings of two high-quality, plant-derived protein isolates (potato and rice), in comparison to a whey protein isolate in a single-blind, triple-crossover design study with nine male participants (30.8 ± 9.3 yrs). Following a 12 h overnight fast, participants consumed an equal volume of the three isocaloric protein shakes on different days, with at least a one-week washout period. Glycaemic indices and gut hormones were measured at baseline, then at 30, 60, 120, 180 min at each visit. Subjective palatability and appetite ratings were measured using visual analogue scales (VAS) over the 3 h, at each visit. This data showed significant differences in insulin secretion with an increase in whey (+141.8 ± 35.1 pmol/L; p = 0.011) and rice (−64.4 ± 20.9 pmol/L; p = 0.046) at 30 min compared to potato protein. A significantly larger total incremental area under the curve (iAUC) was observed with whey versus potato and rice with p < 0.001 and p = 0.010, respectively. There was no significant difference observed in average appetite perception between the different proteins. In conclusion, this study suggests that both plant-derived proteins had a lower insulinaemic response and improved glucose maintenance compared to whey protein.
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Palmer B, Irwin C, McCartney D, Cox GR, Desbrow B. The Impact of Post-Prandial Delay Periods on Ad Libitum Consumption of a Laboratory Breakfast Meal. APPLIED PHYSIOLOGY, NUTRITION, AND METABOLISM = PHYSIOLOGIE APPLIQUEE, NUTRITION ET METABOLISME 2021; 46:1290-1297. [PMID: 33984247 DOI: 10.1139/apnm-2020-0801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study examined the impact of varying the holding time following an ad libitum laboratory breakfast on acute dietary behaviour and subsequent intake. 24 participants (20 females (age: 23.4±6.3 y; BMI: 23.9±3.9 kg·m-2, mean±SD)) completed three trials following a quasi-randomized, crossover design. Each trial (seven day separation) incorporated a defined post-prandial delay (DPD) period of either zero (no delay), one or three hours following a buffet breakfast consumed over 30-minutes. Dietary intake outcomes included energy, macronutrient and core food group intakes. On completion of the DPD period, participants left the laboratory and recorded all food/beverages consumed for the remainder of the day. One-way repeated-measures ANOVA assessed all outcomes, with post hoc analysis conducted on significant main effects. Energy and carbohydrate intakes were significantly lower on no delay vs one hour (p = 0.014) and three hour (p = 0.06) DPD trials (EI: 1853±814 kJ vs. 2250±1345 kJ vs. 1948±1289 kJ; CHO: 68±34 g vs. 77±44 vs. 69±43 g; respectively). DPD periods did not influence the time to consume next meal or energy, macronutrient and core food group intakes for the remainder of the day. Delaying participants from leaving a laboratory alters dietary intake at an ad libitum test meal. The post-meal holding period is an important methodological consideration when planning laboratory studies to assess appetite. Novelty Bullets: 1. Delaying participants from leaving a laboratory alters dietary intake at ad libitum breakfast meals. 2. The length of the delay period did not affect dietary intake at ad libitum breakfast meals.
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Affiliation(s)
- Blake Palmer
- Griffith University School of Allied Health Sciences, 548148, Nutrition and Dietetics, Parklands Drive, Southport, Queensland, Australia, 4222;
| | - Christopher Irwin
- Griffith University, Gold Coast Campus, Southport, Queensland, Australia, 4222;
| | - Danielle McCartney
- The University of Sydney, 4334, Faculty of Science, School of Psychology, Sydney, New South Wales, Australia;
| | - Gregory Ronald Cox
- Bond University Faculty of Health Sciences and Medicine, 104559, Nutrition and Dietetics, 2 Promethean Way, Robina, Gold Coast, Queensland, Australia, 4226;
| | - Ben Desbrow
- Griffith University, School of Allied Health Sciences and Griffith Health Institute, Gold Coast, Queensland, Australia, Gold Coast, Queensland, Australia, 4222.,Gold Coast Campus;
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Hendriks FK, Kooman JP, van Loon LJ. Dietary protein interventions to improve nutritional status in end-stage renal disease patients undergoing hemodialysis. Curr Opin Clin Nutr Metab Care 2021; 24:79-87. [PMID: 33060457 PMCID: PMC7752218 DOI: 10.1097/mco.0000000000000703] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW Poor nutritional status is prevalent among end-stage renal disease patients undergoing hemodialysis. Chronic hemodialysis patients show an accelerated decline in skeletal muscle mass and strength, which is associated with higher mortality rates and a reduced quality of life. The current review aims to summarize recent advances regarding underlying causes of muscle loss and interventions that support muscle mass maintenance in patients with chronic hemodialysis. RECENT FINDINGS Muscle maintenance in chronic hemodialysis patients is compromised by low dietary protein intake levels, anabolic resistance of skeletal muscle tissue, sedentary behavior, and amino acid removal during hemodialysis. Studies assessing the effect of increased protein intake on nutritional status generally show beneficial results, especially in hypoalbuminemic chronic hemodialysis patients. The muscle protein synthetic response following protein ingestion in chronic hemodialysis patients may be enhanced through incorporation of structured physical activity and/or concurrent ketoacid ingestion. SUMMARY A coordinated program that combines nutritional and physical activity interventions is likely required to attenuate the decline in muscle mass and strength of chronic hemodialysis patients. Nephrologists, dieticians, and exercise specialists should collaborate closely to establish guidelines regarding the appropriate quantity and timing of protein ingestion. In addition, they should provide tailored nutritional and physical activity interventions for chronic hemodialysis patients (see video, Supplemental Digital Content 1, Video abstract, http://links.lww.com/COCN/A14).
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Affiliation(s)
- Floris K. Hendriks
- Department of Human Biology
- Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism
| | - Jeroen P. Kooman
- Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism
- Division of Nephrology, Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
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Lower Postprandial Thermogenic Response to an Unprocessed Whole Food Meal Compared to an Iso-Energetic/Macronutrient Meal Replacement in Young Women: A Single-Blind Randomized Cross-Over Trial. Nutrients 2020; 12:nu12082469. [PMID: 32824408 PMCID: PMC7469013 DOI: 10.3390/nu12082469] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 12/22/2022] Open
Abstract
In contrast to ultra-processed foods that are associated with increased weight gain and obesity risk, nutritionally engineered dietary supplements, including meal replacement (MR) bars and shakes, are generally promoted as healthy. Limited data is available comparing the metabolic and hunger responses of whole food (WF) versus MR meals. The purpose of this study was to directly compare the thermic effect (TEM), respiratory exchange ratio (RER), hunger/taste ratings, and glucose response of two different breakfast meals containing MR and WF products in young healthy women. Eight volunteers completed two iso-caloric (529 kcals)/macronutrient (50% carbohydrates; 26% fat; 24% protein) test meals in a single-blind, randomized crossover design: (1) whole food meal; or (2) meal replacement. TEM was significantly higher following MR compared with WF (percent mean difference: 7.76 ± 3.78%; absolute mean difference: 0.053 ± 0.026 kcal/minute, p = 0.048), whereas WF substrate utilization demonstrated lower carbohydrate oxidation (RER) than MR (mean difference: -0.024 ± 0.008, p = 0.005). No differences existed for blood glucose response and feelings of hunger, desire to eat, and satiety among trials. Consumption of an MR meal increases postprandial thermogenesis and RER compared to a WF meal, which may impact weight control and obesity risk over the long-term.
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Kohanmoo A, Faghih S, Akhlaghi M. Effect of short- and long-term protein consumption on appetite and appetite-regulating gastrointestinal hormones, a systematic review and meta-analysis of randomized controlled trials. Physiol Behav 2020; 226:113123. [PMID: 32768415 DOI: 10.1016/j.physbeh.2020.113123] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/02/2020] [Accepted: 08/03/2020] [Indexed: 01/21/2023]
Abstract
AIM High-protein diets are considered as useful diets for weight loss programs. We collected randomized controlled trials that evaluated the effect of protein on appetite and gastrointestinal hormones involved in appetite regulation. METHODS Trials were included if participants were healthy adults and isocaloric treatments were used in control and treatment arms. Random-effects model was used to calculate mean difference and 95% confidence intervals. RESULTS In total, 49 publications for acute and 19 articles for long-term effect of protein were included. In acute interventions, protein decreased hunger (-7 mm visual analogue scale (VAS), P<0.001), desire to eat (-5 mm, P = 0.045), and prospective food consumption (-5 mm, P = 0.001) and increased fullness (10 mm, P<0.001) and satiety (4 mm, P<0.001). There was also a decrease in ghrelin (-20 pg/ml, P<0.001) and increase in cholecystokinin (30 pg/ml, P<0.001) and glucagon-like peptide-1 (GLP-1) (21 ng/ml, P<0.001), but no change in gastric inhibitory polypeptide and peptide YY was observed. Appetite markers were affected by protein doses < 35 g but ghrelin, cholecystokinin, and GLP-1 changed significantly after doses ≥ 35 g. Long-term ingestion of protein did not affect these outcomes, except for GLP-1 which showed a significant decrease. CONCLUSION Results of this meta-analysis showed that acute ingestion of protein suppresses appetite, decreases ghrelin, and augments cholecystokinin and GLP-1. Results of long-term trials are inconclusive and further trials are required before a clear and sound conclusion on these trials could be made.
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Affiliation(s)
- Ali Kohanmoo
- Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shiva Faghih
- Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masoumeh Akhlaghi
- Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.
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Cakebread JA, Wallace OAM, Kruger MC, Vickers MH, Hodgkinson AJ. Supplementation with Bovine Milk or Soy Beverages Recovers Bone Mineralization in Young Growing Rats Fed an Insufficient Diet, in Contrast to an Almond Beverage. Curr Dev Nutr 2019; 3:nzz115. [PMID: 31720556 PMCID: PMC6829496 DOI: 10.1093/cdn/nzz115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Nondairy beverages, produced from soy, rice, oat, almond, or coconut, are increasingly being used as alternatives to dairy milk, with the perception that they are healthier and/or more sustainable products than dairy products. OBJECTIVE The aim of this study was to compare the effects of supplementing either bovine milk, soy, or almond-based beverages to young, growing rats fed an intact-protein diet or a diet that had protein substituted with amino acids (AA-diet). METHODS Three-week-old male Sprague-Dawley rats were randomly assigned to 5 groups (n = 10/group) and fed ad libitum for 4 wk. Two control groups were fed either standard AIN-93G food [20% casein (CN) protein] or AIN-93G with amino acids (AAs) equivalent to CN protein, and water to drink. Three treatment groups were fed AIN-93G AA and supplemented with either bovine ultra-heat treatment (UHT) milk or soy or almond UHT beverages. Rat weight gain and food intakes were recorded. During week 4, body composition was assessed using DEXA to determine lean soft tissue, fat, and bone mass. At trial end, bone biomechanical properties and blood plasma mineral concentrations were measured. RESULTS At the end of the trial, animals supplemented with almond beverage were lightest (P > 0.05), with higher plasma calcium concentrations (P > 0.05) and lower bone mineral content (BMC) and bone density (P > 0.05) than animals supplemented with milk or soy beverage. Soy-supplemented animals had similar BMC and bone density compared with milk-supplemented animals, although the soy group gained most weight (P > 0.05) and had the highest fat:lean ratio (P > 0.05) compared with other groups. CONCLUSIONS In the model tested, supplementing rats with bovine UHT milk and soy UHT beverage provided favorable bone health outcomes. Conversely, almond UHT beverage was not an effective supplement and could be detrimental to bone mineralization and strength outcomes.
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Affiliation(s)
| | | | - Marlena C Kruger
- School of Health Sciences, Massey University, Palmerston North, New Zealand
| | - Mark H Vickers
- Liggins Institute, University of Auckland, Auckland, New Zealand
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