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Essential Amino Acid Ingestion Facilitates Leucine Retention and Attenuates Myofibrillar Protein Breakdown following Bodyweight Resistance Exercise in Young Adults in a Home-Based Setting. Nutrients 2022; 14:nu14173532. [PMID: 36079790 PMCID: PMC9460609 DOI: 10.3390/nu14173532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/22/2022] [Accepted: 08/24/2022] [Indexed: 11/25/2022] Open
Abstract
Home-based resistance exercise (RE) has become increasingly prevalent, but its effects on protein metabolism are understudied. We tested the effect of an essential amino acid formulation (EAA+: 9 g EAAs, 3 g leucine) and branched-chain amino acids (BCAAs: 6 g BCAAs, 3 g leucine), relative to a carbohydrate (CHO) placebo, on exogenous leucine retention and myofibrillar protein breakdown following dynamic bodyweight RE in a home-based setting. Twelve recreationally active adults (nine male, three female) participated in a double-blind, placebo-controlled, crossover study with four trial conditions: (i) RE and EAA+ (EX-EAA+); (ii) RE and BCAAs (EX-BCAA); (iii) RE and CHO placebo (EX-CHO); and (iv) rest and CHO placebo (REST-CHO). Total exogenous leucine oxidation and retention (estimates of whole-body anabolism) and urinary 3-methylhistidine:creatinine ratio (3MH:Cr; estimate of muscle catabolism) were assessed over 5 h post-supplement. Total exogenous leucine oxidation and retention in EX-EAA+ and EX-BCAA did not significantly differ (p = 0.116) but were greater than EX-CHO (p < 0.01). There was a main effect of condition on urinary 3MH:Cr (p = 0.034), with post hoc analysis revealing a trend (p = 0.096) for reduced urinary 3MH:Cr with EX-EAA+ (32%) compared to EX-CHO. By direct comparison, urinary 3MH:Cr was significantly lower (23%) in EX-EAA+ than EX-BCAA (p = 0.026). In summary, the ingestion of EAA+ or BCAA provided leucine that was ~60% retained for protein synthesis following home-based bodyweight RE, but EAA+ most effectively attenuated myofibrillar protein breakdown.
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Mazzulla M, Hodson N, West DWD, Kumbhare DA, Moore DR. A non-invasive 13CO2 breath test detects differences in anabolic sensitivity with feeding and heavy resistance exercise in healthy young males: a randomized control trial. Appl Physiol Nutr Metab 2022; 47:860-870. [PMID: 35609328 DOI: 10.1139/apnm-2021-0808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There are limited tools to measure anabolic sensitivity non-invasively in response to acute physiological stimuli, which represents a challenge for research in free-living settings and vulnerable populations. We tested the ability of a stable isotope breath test to detect changes in leucine oxidation (OX) and leucine retention (intake - OX) across a range of anabolic sensitivities. Healthy males ingested a beverage containing 0.25 g·kg-1 protein and 0.75 g·kg-1 carbohydrate with the leucine content enriched to 5% with L-[1-13C]leucine at rest (FED) or after a bout of resistance exercise (EXFED), with a parallel group consuming only the tracer (FAST). Concurrent primed-constant infusions of L-[5,5,5-2H3]leucine revealed high peripheral bioavailability for FED (~81%), EXFED (~80%), and FAST (~117%). After beverage ingestion, whole-body protein synthesis was greater in FED and EXFED than FAST. OX was greater in FED and EXFED than FAST, with EXFED lower than FED. Leucine retention demonstrated expected physiological differences in anabolic sensitivity (EXFED > FED > FAST). We demonstrated that a non-invasive breath test based on an amino acid (leucine) that is preferentially metabolized in peripheral (muscle) tissues can detect differences in anabolic sensitivity. Future studies could examine this test within a variety of populations experiencing muscle growth or atrophy. Novelty Bullets • An oral L-[1-13C]leucine breath test can detect greater anabolic sensitivity after feeding and resistance exercise. • This tool may be applied in growing (e.g., children) or wasting (e.g. aging) populations where invasive procedures are not possible.
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Affiliation(s)
| | - Nathan Hodson
- University of Toronto, 7938, Faculty of Kinesiology and Physical Education, Toronto, Ontario, Canada;
| | - Daniel W D West
- University of Toronto, 7938, Toronto, Ontario, Canada.,Toronto Rehabilitation Institute, 7961, Toronto, Ontario, Canada;
| | - Dinesh A Kumbhare
- Toronto Rehabilitation Institute, 7961, Medicine, Toronto, Ontario, Canada.,University of Toronto Faculty of Kinesiology and Physical Education, 177420, Toronto, Ontario, Canada;
| | - Daniel R Moore
- CAN, 7641, Department of Exercise Sciences, Stockholm, Sweden;
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Reckman GA, Koehorst M, Schierbeek H, Vonk RJ. Milk protein oxidation in healthy subjects: A preliminary study. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2020.104826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Reckman GAR, Navis GJ, Krijnen WP, Vonk RJ, Jager-Wittenaar H, van der Schans CP. Aerobic exercise increases post-exercise exogenous protein oxidation in healthy young males. PLoS One 2019; 14:e0225803. [PMID: 31765432 PMCID: PMC6876877 DOI: 10.1371/journal.pone.0225803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/12/2019] [Indexed: 01/07/2023] Open
Abstract
The capacity to utilize ingested protein for optimal support of protein synthesis and lean body mass is described within the paradigm of anabolic competence. Protein synthesis can be stimulated by physical exercise, however, it is not known if physical exercise affects post-exercise protein oxidation. Characterization of the driving forces behind protein oxidation, such as exercise, can contribute to improved understanding of whole body protein metabolism. The purpose of this study is to determine the effect of two levels of aerobic exercise intensity on immediate post-exercise exogenous protein oxidation. Sixteen healthy males with a mean (SD) age of 24 (4) years participated. The subjects' VO2-max was estimated with the Åstrand cycling test. Habitual dietary intake was assessed with a three-day food diary. Exogenous protein oxidation was measured by isotope ratio mass spectrometry. These measurements were initiated after the ingestion of a 30 g 13C-milk protein test drink that was followed by 330 minutes breath sample collection. On three different days with at least one week in between, exogenous protein oxidation was measured: 1) during rest, 2) after 15 minutes of aerobic exercise at 30% of VO2-max (moderate intensity), and 3) after 15 minutes of aerobic exercise at 60% of VO2-max (vigorous intensity). After vigorous intensity aerobic exercise, 31.8%±8.0 of the 30 g 13C-milk protein was oxidized compared to 26.2%±7.1 during resting condition (p = 0.012), and 25.4%±7.6 after moderate intensity aerobic exercise compared to resting (p = 0.711). In conclusion, exogenous protein oxidation is increased after vigorous intensity aerobic exercise which could be the result of an increased protein turnover rate.
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Affiliation(s)
- Gerlof A. R. Reckman
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Research Group Healthy Ageing, Allied Health Care and Nursing, Centre of Expertise Healthy Ageing, Hanze University of Applied Sciences, Groningen, the Netherlands
| | - Gerjan J. Navis
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Wim P. Krijnen
- Research Group Healthy Ageing, Allied Health Care and Nursing, Centre of Expertise Healthy Ageing, Hanze University of Applied Sciences, Groningen, the Netherlands
| | - Roel J. Vonk
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Harriët Jager-Wittenaar
- Research Group Healthy Ageing, Allied Health Care and Nursing, Centre of Expertise Healthy Ageing, Hanze University of Applied Sciences, Groningen, the Netherlands
- Department of Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Cees P. van der Schans
- Research Group Healthy Ageing, Allied Health Care and Nursing, Centre of Expertise Healthy Ageing, Hanze University of Applied Sciences, Groningen, the Netherlands
- Department of Rehabilitation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Health Psychology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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Integrated Role of Nutrition and Physical Activity for Lifelong Health. Nutrients 2019; 11:nu11071437. [PMID: 31247924 PMCID: PMC6682932 DOI: 10.3390/nu11071437] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 06/20/2019] [Accepted: 06/24/2019] [Indexed: 12/23/2022] Open
Abstract
It is well established that healthy nutrition and physical activity (PA) are key lifestyle factors that modulate lifelong health through their ability to improve body composition, musculoskeletal health, and physical and cognitive performance, as well as to prevent metabolic diseases including obesity, diabetes mellitus, and cardiovascular disease across the lifespan [...].
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Reckman GAR, Gomes-Neto AW, Vonk RJ, Ottery FD, van der Schans CP, Navis GJ, Jager-Wittenaar H. Anabolic competence: Assessment and integration of the multimodality interventional approach in disease-related malnutrition. Nutrition 2019; 65:179-184. [PMID: 31170682 DOI: 10.1016/j.nut.2019.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 02/06/2019] [Accepted: 03/20/2019] [Indexed: 01/04/2023]
Abstract
Disease-related malnutrition (DRM) is a frequent clinical problem, characterized by loss of lean body mass and decreased function, including muscle function and immunocompetence. In DRM, nutritional intervention is necessary, but it has not consistently been shown to be sufficient. Other factors, for example, physical activity and hormonal or metabolic influencers of the internal milieu, are also important in the treatment of DRM. A prerequisite for successful treatment of DRM is the positive balance between anabolism and catabolism. The aim of this review was to approach DRM using this paradigm of anabolic competence, for conceptual and practical reasons. Anabolic competence is defined as "that state which optimally supports protein synthesis and lean body mass, global aspects of muscle and organ function, and immune response." Anabolic competence and interdisciplinary, multimodality interventions create a practical foundation to approach DRM in a proactive comprehensive way. Here, we describe the paradigm of anabolic competence, and its operationalization by measuring factors related to anabolic competence and suited for clinical management of patients with DRM.
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Affiliation(s)
- G A R Reckman
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands
| | - A W Gomes-Neto
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - R J Vonk
- Department Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - F D Ottery
- Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands; Ottery & Associates, LLC, Oncology Care Consultants, Deerfield, Chicago, Illinois, USA
| | - C P van der Schans
- Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands; Rehabilitation and Health Psychology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - G J Navis
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - H Jager-Wittenaar
- Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands; Department of Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
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