SUN-PP098: The Effects of the Type of Protein Supplementation Combined with Power Training on Muscle Function and Functional Capacities in Elderly Men

2015 ◽  
Vol 34 ◽  
pp. S59-S60
Author(s):  
M. Dulac ◽  
C. Pion ◽  
M. Bélanger ◽  
J. Morais ◽  
G. Gouspillou ◽  
...  
Keyword(s):  
Muscle Function ◽  
Protein Supplementation ◽  
Power Training ◽  
Elderly Men ◽  
Functional Capacities

Effects of slow- v. fast-digested protein supplementation combined with mixed power training on muscle function and functional capacities in older men

2020 ◽  
pp. 1-17
Author(s):  
M. C. Dulac ◽  
C. H. Pion ◽  
F. C. Lemieux ◽  
L. Pinheiro Carvalho ◽  
G. El Hajj Boutros ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Functional Capacity ◽  
Muscle Function ◽  
Knee Extensor ◽  
Older Men ◽  
Protein Supplementation ◽  
Power Training ◽  
Elderly Men ◽  
Post Intervention ◽  
Mixed Power

Abstract Ageing leads to a progressive loss of muscle function (MF) and quality (MQ: muscle strength (MS)/lean muscle mass (LM)). Power training and protein (PROT) supplementation have been proposed as efficient interventions to improve MF and MQ. Discrepancies between results appear to be mainly related to the type and/or dose of proteins used. The present study aimed at determining whether or not mixed power training (MPT) combined with fast-digested PROT (F-PROT) leads to greater improvements in MF and MQ in elderly men than MPT combined with slow-digested PROT (S-PROT) or MPT alone. Sixty elderly men (age 69 (sd 7) years; BMI 18–30 kg/m2) were randomised into three groups: (1) placebo + MPT (PLA; n 19); (2) F-PROT + MPT (n 21) and (3) S-PROT + MPT (n 20) completed the intervention. LM, handgrip and knee extensor MS and MQ, functional capacity, serum metabolic markers, skeletal muscle characteristics, dietary intake and total energy expenditure were measured. The interventions consisted in 12 weeks of MPT (3 times/week; 1 h/session) combined with a supplement (30 g:10 g per meal) of F-PROT (whey) or S-PROT (casein) or a placebo. No difference was observed among groups for age, BMI, number of steps and dietary intake pre- and post-intervention. All groups improved significantly their LM, lower limb MS/MQ, functional capacity, muscle characteristics and serum parameters following the MPT. Importantly, no difference between groups was observed following the MPT. Altogether, adding 30 g PROT/d to MPT, regardless of the type, does not provide additional benefits to MPT alone in older men ingesting an adequate (i.e. above RDA) amount of protein per d.

scholarly journals PROBLEMATIC DRINKING IS ASSOCIATED TO MUSCLE MASS AND MUSCLE FUNCTION IN ELDERLY MEN WITH DIABETES

2017 ◽  
Vol 1 (suppl_1) ◽  
pp. 551-551
Author(s):  
N. Buchmann ◽  
D. Spira ◽  
I. Demuth ◽  
K. Norman ◽  
E. Steinhagen-Thiessen
Keyword(s):  
Muscle Mass ◽  
Muscle Function ◽  
Elderly Men ◽  
Problematic Drinking

Positive effects of 1-year football and strength training on mechanical muscle function and functional capacity in elderly men

2016 ◽  
Vol 116 (6) ◽  
pp. 1127-1138 ◽  
Author(s):  
Emil Sundstrup ◽  
Markus Due Jakobsen ◽  
Lars Louis Andersen ◽  
Thomas Rostgaard Andersen ◽  
Morten Bredsgaard Randers ◽  
...  
Keyword(s):  
Strength Training ◽  
Functional Capacity ◽  
Muscle Function ◽  
Elderly Men ◽  
Positive Effects

scholarly journals The Role of Protein Intake and its Timing on Body Composition and Muscle Function in Healthy Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

2020 ◽  
Vol 150 (6) ◽  
pp. 1443-1460 ◽  
Author(s):  
Janine Wirth ◽  
Elaine Hillesheim ◽  
Lorraine Brennan
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Muscle Function ◽  
Protein Intake ◽  
Handgrip Strength ◽  
Meta Analysis ◽  
Protein Supplementation ◽  
Controlled Trials ◽  
Leg Press ◽  
Randomized Controlled

ABSTRACT Background Increased protein intake has been suggested to improve gains in muscle mass and strength in adults. Furthermore, the timing of protein intake has been discussed as a margin of opportunity for improved prevention measures. Objective This systematic review investigated the effect of protein supplementation on body composition and muscle function (strength and synthesis) in healthy adults, with an emphasis on the timing of protein intake. Methods Randomized controlled trials were identified using PubMed, Web of Science, CINAHL, and Embase, up to March 2019. For meta-analyses, data on lean body mass (LBM), handgrip strength, and leg press strength were pooled by age group (mean age 18–55 or >55 y) and timing of protein intake. The quality of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluations approach. Results Data from 65 studies with 2907 participants (1514 men and 1380 women, 13 unknown sex) were included in the review. Twenty-six, 8, and 24 studies were used for meta-analysis on LBM, handgrip strength, and leg press strength, respectively. The protein supplementation was effective in improving (mean difference; 95% CI) LBM in adults (0.62 kg; 0.36, 0.88) and older adults (0.46 kg; 0.23, 0.70), but not handgrip strength (older adults: 0.26 kg; −0.51, 1.04) and leg press strength (adults: 5.80 kg; −0.33, 11.93; older adults: 1.97 kg; −2.78, 6.72). Sensitivity analyses removing studies without exercise training had no impact on the outcomes. Data regarding muscle synthesis were scarce and inconclusive. Subgroup analyses showed no beneficial effect of a specific timing of protein intake on LBM, handgrip strength, and leg press strength. Conclusion Overall, the results support the positive impact of protein supplementation on LBM of adults and older adults, independently of intake timing. Effects on muscle strength and synthesis are less clear and need further investigation. This systematic review was registered on PROSPERO as CRD42019126742.

scholarly journals Protein ingestion preserves proteasome activity during intense aseptic inflammation and facilitates skeletal muscle recovery in humans

2017 ◽  
Vol 118 (3) ◽  
pp. 189-200 ◽  
Author(s):  
Dimitrios Draganidis ◽  
Niki Chondrogianni ◽  
Athanasios Chatzinikolaou ◽  
Gerasimos Terzis ◽  
Leonidas G. Karagounis ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Eccentric Exercise ◽  
Muscle Function ◽  
Milk Protein ◽  
Protein Supplementation ◽  
Proteasome Activity ◽  
Vastus Lateralis Muscle ◽  
Aseptic Inflammation ◽  
Post Exercise ◽  
Repeated Measures Design

AbstractThe ubiquitin–proteasome system (UPS) is the main cellular proteolytic system responsible for the degradation of normal and abnormal (e.g. oxidised) proteins. Under catabolic conditions characterised by chronic inflammation, the UPS is activated resulting in proteolysis, muscle wasting and impaired muscle function. Milk proteins provide sulphur-containing amino acid and have been proposed to affect muscle inflammation. However, the response of the UPS to aseptic inflammation and protein supplementation is largely unknown. The aim of this study was to investigate how milk protein supplementation affects UPS activity and skeletal muscle function under conditions of aseptic injury induced by intense, eccentric exercise. In a double-blind, cross-over, repeated measures design, eleven men received either placebo (PLA) or milk protein concentrate (PRO, 4×20 g on exercise day and 20 g/d for the following 8 days), following an acute bout of eccentric exercise (twenty sets of fifteen eccentric contractions at 30°/s) on an isokinetic dynamometer. In each trial, muscle biopsies were obtained from the vastus lateralis muscle at baseline, as well as at 2 and 8 d post exercise, whereas blood samples were collected before exercise and at 6 h, 1 d, 2 d and 8 d post exercise. Muscle strength and soreness were assessed before exercise, 6 h post exercise and then daily for 8 consecutive days. PRO preserved chymotrypsin-like activity and attenuated the decrease of strength, facilitating its recovery. PRO also prevented the increase of NF-κB phosphorylation and HSP70 expression throughout recovery. We conclude that milk PRO supplementation following exercise-induced muscle trauma preserves proteasome activity and attenuates strength decline during the pro-inflammatory phase.

SUN-PP087: Serum IGF-1 to IGFBP3 Ratio: A Specific Biomarker of Functional Capacities in Elderly Men?

2015 ◽  
Vol 34 ◽  
pp. S56
Author(s):  
G. El Hajj Boutros ◽  
M.D. Dulac ◽  
C.H. Pion ◽  
J.-P. Leduc-Gaudet ◽  
M. Belanger ◽  
...  
Keyword(s):  
Elderly Men ◽  
Functional Capacities
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