scholarly journals MNX (Medium Duration Nutrition and Resistance-Vibration Exercise) Bed-Rest: Effect of Resistance Vibration Exercise Alone or Combined With Whey Protein Supplementation on Cardiovascular System in 21-Day Head-Down Bed Rest

2020 ◽  
Vol 11 ◽  
Author(s):  
Patrick Guinet ◽  
James Patrick MacNamara ◽  
Matthieu Berry ◽  
Françoise Larcher ◽  
Marie-Pierre Bareille ◽  
...  
Keyword(s):  
Cardiovascular System ◽  
Whey Protein ◽  
Bed Rest ◽  
Protein Supplementation ◽  
Vibration Exercise

Whey protein supplementation with vibration exercise ameliorates lumbar paraspinal muscle atrophy in prolonged bed rest

2020 ◽  
Vol 128 (6) ◽  
pp. 1568-1578
Author(s):  
Patrick J. Owen ◽  
Gabriele Armbrecht ◽  
Martin Bansmann ◽  
Jochen Zange ◽  
Regina Pohle-Fröhlich ◽  
...  
Keyword(s):  
Back Pain ◽  
Whey Protein ◽  
Muscle Atrophy ◽  
Bed Rest ◽  
Protein Supplementation ◽  
Paraspinal Muscle ◽  
Vibration Exercise ◽  
Pain Reports ◽  
The Impact

We examined the impact of adding protein supplementation to exercise (resistive vibration exercise) as a countermeasure against changes in the spine during spaceflight simulation. We found that adding the protein supplementation reduced spine muscle atrophy more than exercise alone. Neither countermeasure approach prevented changes in the disks in the spine or impacted back pain reports.

scholarly journals Effects of Resistance Exercise with or without Whey Protein Supplementation on Ocular Changes after a 21-Day Head-Down Bed Rest

Life ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 741
Author(s):  
Marc Kermorgant ◽  
Sirine Hammoud ◽  
Laurence Mahieu ◽  
Thomas Geeraerts ◽  
Arnaud Beck ◽  
...  
Keyword(s):  
Prolonged Exposure ◽  
Bed Rest ◽  
Applanation Tonometry ◽  
Protein Supplementation ◽  
Nutritional Supplementation ◽  
Con A ◽  
Fiber Layer ◽  
Vibration Exercise ◽  
Nerve Fiber Layer Thickness ◽  
Male Subjects

Neuro-ophthalmological changes have been reported after prolonged exposure to microgravity; however, the pathophysiology remains unclear. The objectives of the present study were twofold: (1) to assess the neuro-ophthalmological impact of 21 days of head-down bed rest (HDBR) and (2) to determine the effects of resistance vibration exercise (RVE) alone or combined with nutritional supplementation (NeX). In this case, 12 healthy male subjects completed three interventions of a 21-day HDBR: a control condition without countermeasure (CON), a condition with resistance vibration exercise (RVE) comprising of squats, single leg heel and bilateral heel raises and a condition using also RVE associated with nutritional supplementation (NeX). Intraocular pressure (IOP) was assessed by applanation tonometry. Retinal nerve fiber layer thickness (RNFLT) was assessed with spectral-domain optical coherence tomography, before HDBR and between Day 2 and Day 4 after each session of HDBR. In CON condition, IOP was preserved; while in RVE and NeX conditions, IOP was increased. In CON condition, RNFLT was preserved after HDBR. RVE and NeX conditions did not have significant effects on RNFLT. This study showed that a 3-week HDBR did not induce significant ophthalmological changes. However, RVE induced an elevation in IOP after HDBR. Nutritional supplementation did not reduce or exacerbate the side effects of RVE.

Comparison of the Effect of Soy protein and Whey protein on Body Composition: A Meta-Analysis of Randomized Clinical Trials

2021 ◽  
pp. 1-27
Author(s):  
Masoome Piri Damaghi ◽  
Atieh Mirzababaei ◽  
Sajjad Moradi ◽  
Elnaz Daneshzad ◽  
Atefeh Tavakoli ◽  
...  
Keyword(s):  
Body Composition ◽  
Whey Protein ◽  
Lean Body Mass ◽  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
Soy Protein ◽  
Protein Supplementation ◽  
Body Fat Percentage ◽  
Fat Percentage

Abstract Background: Essential amino acids (EAAs) promote the process of regulating muscle synthesis. Thus, whey protein that contains higher amounts of EAA can have a considerable effect on modifying muscle synthesis. However, there is insufficient evidence regarding the effect of soy and whey protein supplementation on body composition. Thus, we sought to perform a meta-analysis of published Randomized Clinical Trials that examined the effect of whey protein supplementation and soy protein supplementation on body composition (lean body mass, fat mass, body mass and body fat percentage) in adults. Methods: We searched PubMed, Scopus, and Google Scholar, up to August 2020, for all relevant published articles assessing soy protein supplementation and whey protein supplementation on body composition parameters. We included all Randomized Clinical Trials that investigated the effect of whey protein supplementation and soy protein supplementation on body composition in adults. Pooled means and standard deviations (SD) were calculated using random-effects models. Subgroup analysis was applied to discern possible sources of heterogeneity. Results: After excluding non-relevant articles, 10 studies, with 596 participants, remained in this study. We found a significant increase in lean body mass after whey protein supplementation weighted mean difference (WMD: 0.91; 95% CI: 0.15, 1.67. P= 0.019). Subgroup analysis, for whey protein, indicated that there was a significant increase in lean body mass in individuals concomitant to exercise (WMD: 1.24; 95% CI: 0.47, 2.00; P= 0.001). There was a significant increase in lean body mass in individuals who received 12 or less weeks of whey protein (WMD: 1.91; 95% CI: 1.18, 2.63; P<0.0001). We observed no significant change between whey protein supplementation and body mass, fat mass, and body fat percentage. We found no significant change between soy protein supplementation and lean body mass, body mass, fat mass, and body fat percentage. Subgroup analysis for soy protein indicated there was a significant increase in lean body mass in individuals who supplemented for 12 or less weeks with soy protein (WMD: 1.48; 95% CI: 1.07, 1.89; P< 0.0001). Conclusion: Whey protein supplementation significantly improved body composition via increases in lean body mass, without influencing fat mass, body mass, and body fat percentage.

scholarly journals Whey protein supplementation reducing fasting levels of anandamide and 2-AG without weight loss in pre-menopausal women with obesity on a weight-loss diet

Trials ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Fatemeh Haidari ◽  
Vahideh Aghamohammadi ◽  
Majid Mohammadshahi ◽  
Kambiz Ahmadi-Angali ◽  
Mohammad Asghari-Jafarabadi
Keyword(s):  
Weight Loss ◽  
Whey Protein ◽  
Protein Supplementation ◽  
Weight Loss Diet ◽  
Menopausal Women

scholarly journals Two-Year Whey Protein Supplementation Did Not Enhance Muscle Mass and Physical Function in Well-Nourished Healthy Older Postmenopausal Women

2015 ◽  
Vol 145 (11) ◽  
pp. 2520-2526 ◽  
Author(s):  
Kun Zhu ◽  
Deborah A Kerr ◽  
Xingqiong Meng ◽  
Amanda Devine ◽  
Vicky Solah ◽  
...  
Keyword(s):  
Physical Function ◽  
Postmenopausal Women ◽  
Whey Protein ◽  
Muscle Mass ◽  
Protein Supplementation

Effects of Whey Protein on Skeletal Muscle Microvascular and Mitochondrial Plasticity Following 10-Weeks of Exercise Training in Men with Type-2 Diabetes

2021 ◽  
Author(s):  
Kim Gaffney ◽  
Adam Lucero ◽  
Donia Macartney-Coxson ◽  
Jane Clapham ◽  
Patricia Whitfield ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Skeletal Muscle ◽  
Exercise Training ◽  
Whey Protein ◽  
Controlled Trial ◽  
Protein Supplementation ◽  
Microvascular Blood Flow ◽  
Glucose Disposal ◽  
Altered Expression

Skeletal muscle microvascular dysfunction and mitochondrial rarefaction feature in type-2 diabetes mellitus (T2DM) linked to low tissue glucose disposal rate (GDR). Exercise training and milk protein supplementation independently promote microvascular and metabolic plasticity in muscle associated with improved nutrient delivery, but combined effects are unknown. In a randomised-controlled trial, 24 men (55.6 y, SD5.7) with T2DM ingested whey protein drinks (protein/carbohydrate/fat: 20/10/3 g; WHEY) or placebo (carbohydrate/fat: 30/3 g; CON) before/after 45 mixed-mode intense exercise sessions over 10 weeks, to study effects on insulin-stimulated (hyperinsulinemic clamp) skeletal-muscle microvascular blood flow (mBF) and perfusion (near-infrared spectroscopy), and histological, genetic, and biochemical markers (biopsy) of microvascular and mitochondrial plasticity. WHEY enhanced insulin-stimulated perfusion (WHEY-CON 5.6%; 90%CI -0.1, 11.3), while mBF was not altered (3.5%; -17.5, 24.5); perfusion, but not mBF, associated (regression) with increased GDR. Exercise training increased mitochondrial (range of means: 40-90%) and lipid density (20-30%), enzyme activity (20-70%), capillary:fiber ratio (~25%), and lowered systolic (~4%) and diastolic (4-5%) blood pressure, but without WHEY effects. WHEY dampened PGC1α -2.9% (90%CI -5.7, -0.2) and NOS3 -6.4% (-1.4, -0.2) expression, but other mRNA were unclear. Skeletal muscle microvascular and mitochondrial exercise adaptations were not accentuated by whey protein ingestion in men with T2DM. Clinical Trial Registration Number: ACTRN12614001197628 Novelty Bullets: • Chronic whey ingestion in T2DM with exercise altered expression of several mitochondrial and angiogenic mRNA. • Whey added no additional benefit to muscle microvascular or mitochondrial adaptations to exercise. • Insulin-stimulated perfusion increased with whey but was without impact on glucose disposal.

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