scholarly journals Continuous Protein Supplementation Reduces Acute Exercise-Induced Stress Markers in Athletes Performing Marathon

Nutrients ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 2929
Author(s):  
Martin Röhling ◽  
David McCarthy ◽  
Aloys Berg
Keyword(s):  
Inflammatory Markers ◽  
Protein Intake ◽  
Daily Intake ◽  
Endurance Performance ◽  
Protein Supplementation ◽  
Marathon Race ◽  
Induced Stress ◽  
Before And After ◽  
Muscle Stress ◽  
Exercise Induced

The aim of this study was to determine the changes in endurance performance and metabolic, hormonal, and inflammatory markers induced by endurance stress (marathon race) in a combined strategy of training and dietary protein supplementation. The study was designed as a randomised controlled trial consisting of regular endurance training without and with a daily intake of a soy protein-based supplement over a three-month period in 2 × 15 (10 males and 5 females per group) endurance-trained adults. Body composition (body mass, BMI, and fat mass) was determined, and physical fitness was measured by treadmill ergometry at baseline and after 3 months of intervention; changes in exercise-induced stress and inflammatory markers (CK, myoglobin, interleukin-6, cortisol, and leukocytes) were also determined before and after a marathon competition; eating behaviour was documented before and after intervention by a three-day diet diary. Although no significant influence on endurance performance was observed, the protein supplementation regime reduced the exercise-induced muscle stress response. Furthermore, a protein intake of ≥20% of total energy intake led to a lower-level stress reaction after the marathon race. In conclusion, supplementary protein intake may influence exercise-induced muscle stress reactions by changing cellular metabolism and inflammatory pathways.

scholarly journals Effect of whey vs. soy protein supplementation on recovery kinetics following speed endurance training in competitive male soccer players: a randomized controlled trial

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Savvas Kritikos ◽  
Konstantinos Papanikolaou ◽  
Dimitrios Draganidis ◽  
Athanasios Poulios ◽  
Kalliopi Georgakouli ◽  
...  
Keyword(s):  
Endurance Training ◽  
Muscle Damage ◽  
Soy Protein ◽  
Protein Intake ◽  
Redox Status ◽  
Protein Supplementation ◽  
Soccer Players ◽  
Protein Carbonyls ◽  
Maximal Voluntary Isometric Contraction ◽  
Exercise Induced

Abstract Background Soccer-specific speed-endurance training induces short-term neuromuscular fatigue and performance deterioration over a 72-h recovery period, associated with elevated markers of exercise-induced muscle damage. We compared the effects of whey vs. soy protein supplementation on field activity, performance, muscle damage and redox responses following speed-endurance training in soccer players. Methods Ten well-trained, male soccer players completed three speed-endurance training trials, receiving whey protein (WP), soy protein (SP) or an isoenergetic placebo (PL; maltodextrin) according to a randomized, double-blind, crossover, repeated-measures design. A pre-loading period was applied in each trial during which protein supplementation was individually adjusted to reach a total protein intake of 1.5 g/kg/day, whereas in PL protein intake was adjusted at 0.8–1 g/kg/day. Following pre-loading, two speed-endurance training sessions (1 and 2) were performed 1 day apart, over a 3-day experimental period. During each session, field activity and heart rate were continuously monitored using global positioning system and heart rate monitors, respectively. Performance (isokinetic strength of knee extensors and flexors, maximal voluntary isometric contraction, speed, repeated sprint ability, countermovement jump), muscle damage (delayed-onset of muscle soreness, creatine kinase activity) and redox status (glutathione, total antioxidant capacity, protein carbonyls) were evaluated at baseline (pre), following pre-loading (post-load), and during recovery from speed-endurance training. Results High-intensity and high-speed running decreased (P ≤ 0.05) during speed-endurance training in all trials, but WP and SP mitigated this response. Isokinetic strength, maximal voluntary isometric contraction, 30-m speed, repeated sprint ability and countermovement jump performance were similarly deteriorated during recovery following speed-endurance training in all trials (P ≤ 0.05). 10 m speed was impaired at 24 h only in PL. Delayed-onset of muscle soreness, creatine kinase, total antioxidant capacity and protein carbonyls increased and glutathione decreased equally among trials following speed-endurance training (P ≤ 0.05), with SP inducing a faster recovery of protein carbonyls only at 48 h (P ≤ 0.05) compared to WP and PL. Conclusions In conclusion, increasing daily protein intake to 1.5 g/kg through ingestion of either whey or soy protein supplements mitigates field performance deterioration during successive speed-endurance training sessions without affecting exercise-induced muscle damage and redox status markers. Trial registration Name of the registry: clinicaltrials.gov. Trial registration: NCT03753321. Date of registration: 12/10/2018.

Protein Turnover, Synthesis and Breakdown before and after Recovery from Protein-Energy Malnutrition

1977 ◽  
Vol 53 (5) ◽  
pp. 473-477 ◽  
Author(s):  
M. H. N. Golden ◽  
J. C. Waterlow ◽  
D. Picou
Keyword(s):  
Protein Turnover ◽  
Protein Intake ◽  
Protein Energy Malnutrition ◽  
Daily Intake ◽  
Protein Breakdown ◽  
Malnourished Children ◽  
Protein Energy ◽  
Wide Range ◽  
Before And After ◽  
15N Urea

1. Rates of total protein turnover, synthesis and breakdown were measured in five children before and after recovery from severe protein-energy malnutrition and while receiving 0·6 g of protein and 397 kJ day−1 kg−1. 2. These rates were calculated after giving doses of [15N]glycine every 2 h along with the feeds and measuring the rate of excretion of [15N]urea in urine. 3. Malnourished children had significantly lower rates of protein turnover, synthesis and breakdown than after they had recovered. 4. During recovery from protein-energy malnutrition, two children on a daily intake of 1·2 g of protein and 605 J/kg body weight, had rates of protein turnover, synthesis and breakdown that were twice as great as those found on admission and higher than after recovery. 5. On the study diet the malnourished children maintained their weight while the recovered children lost weight; the apparent nitrogen balance was more positive in the malnourished children. 6. In recovered children, the rate of protein synthesis was unchanged over a wide range of protein intake, whereas the rate of protein breakdown appeared to rise with a reduction in protein intake.

scholarly journals The Effect of Protein Supplementation versus Carbohydrate Supplementation on Muscle Damage Markers and Soreness Following a 15-km Road Race: A Double-Blind Randomized Controlled Trial

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 858
Author(s):  
Dominique S. M. ten Haaf ◽  
Martin A. Flipsen ◽  
Astrid M. H. Horstman ◽  
Hans Timmerman ◽  
Monique A. H. Steegers ◽  
...  
Keyword(s):  
Placebo Group ◽  
Protein Intake ◽  
Muscle Soreness ◽  
Controlled Trial ◽  
Protein Supplementation ◽  
Group Differences ◽  
Double Blind ◽  
Carbohydrate Supplementation ◽  
Protein Group ◽  
Road Race

We assessed whether a protein supplementation protocol could attenuate running-induced muscle soreness and other muscle damage markers compared to iso-caloric placebo supplementation. A double-blind randomized controlled trial was performed among 323 recreational runners (age 44 ± 11 years, 56% men) participating in a 15-km road race. Participants received milk protein or carbohydrate supplementation, for three consecutive days post-race. Habitual protein intake was assessed using 24 h recalls. Race characteristics were determined and muscle soreness was assessed with the Brief Pain Inventory at baseline and 1–3 days post-race. In a subgroup (n = 149) muscle soreness was measured with a strain gauge algometer and creatine kinase (CK) and lactate dehydrogenase (LDH) concentrations were measured. At baseline, no group-differences were observed for habitual protein intake (protein group: 79.9 ± 26.5 g/d versus placebo group: 82.0 ± 26.8 g/d, p = 0.49) and muscle soreness (protein: 0.45 ± 1.08 versus placebo: 0.44 ± 1.14, p = 0.96). Subjects completed the race with a running speed of 12 ± 2 km/h. With the Intention-to-Treat analysis no between-group differences were observed in reported muscle soreness. With the per-protocol analysis, however, the protein group reported higher muscle soreness 24 h post-race compared to the placebo group (2.96 ± 2.27 versus 2.46 ± 2.38, p = 0.039) and a lower pressure muscle pain threshold in the protein group compared to the placebo group (71.8 ± 30.0 N versus 83.9 ± 27.9 N, p = 0.019). No differences were found in concentrations of CK and LDH post-race between groups. Post-exercise protein supplementation is not more preferable than carbohydrate supplementation to reduce muscle soreness or other damage markers in recreational athletes with mostly a sufficient baseline protein intake running a 15-km road race.

Effect of SunGold TM Kiwifruit and Vitamin C Consumption on Ameliorating Exercise‐Induced Stress Response in Women

2021 ◽  
pp. 2001219
Author(s):  
Ajmol Ali ◽  
Sunali Mehta ◽  
Carlene Starck ◽  
Marie Wong ◽  
Wendy J. O'Brien ◽  
...  
Keyword(s):  
Stress Response ◽  
Vitamin C ◽  
Induced Stress ◽  
Exercise Induced

scholarly journals Diet modification impact on ADHD outcome

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Olweya Mohammed Abd El Baaki ◽  
Enas Raafat Abd El Hamid ◽  
Safaa Taha Zaki ◽  
Amani Salah El Din Alwakkad ◽  
Rania Nabil Sabry ◽  
...  
Keyword(s):  
Protein Intake ◽  
Rating Scale ◽  
Behavioral Therapy ◽  
Short Form ◽  
Adhd Symptoms ◽  
Parent Rating ◽  
Dietary Analysis ◽  
Dietary Recall ◽  
Diet Modification ◽  
Before And After

Abstract Background Attention-deficit hyperactivity disorder (ADHD) is one of the most common neurodevelopmental disorders, affects 5% of children worldwide and characterized by impaired inattention, hyperactivity and impulsivity. One of the risk factors that precipitate ADHD is food. Food affects behavior of children by different ways such as food allergy, food intolerance and gut–microbiota–brain axis. The study aimed to assess effect of diet modification on ADHD outcome and the role of food as a precipitating factor for ADHD symptomatology. The study included 47 children newly diagnosed with ADHD, not receiving medical or behavioral therapy, their ages ranged from 6 to 9 years and their intelligence quotient not below 70 with no associated comorbidities. All participants were subjected to Full history taking, clinical examination, anthropometric measurements, 24 h dietary recall. Dietary analysis and Conner’s parent rating scale-revised short form (CPR-RS) were done before and after diet modification program for 5 weeks. Results There was improvement in ADHD symptoms as measured by CPR-RS after 5-weeks of diet modification program. Carbohydrate and protein intake decreased significantly after diet modification program. Energy intake did not show statistical difference while fat intake increased significantly after the diet program. Vitamin A, C, riboflavin, thiamin and iron intakes decreased significantly after diet program but were within the recommended dietary allowance. Conclusion Following the Diet modification program, ADHD symptoms were improved as documented by decrease in CPR scores. Diminished carbohydrate and protein intake in diet were positively associated with improvement of ADHD symptoms. Diet modification program succeeded in reducing obesity and then ADHD symptoms.

scholarly journals Assessment of Protein Intake in the First Three Months after Sleeve Gastrectomy in Patients with Severe Obesity

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 771
Author(s):  
Lucrezia Bertoni ◽  
Romina Valentini ◽  
Alessandra Zattarin ◽  
Anna Belligoli ◽  
Silvia Bettini ◽  
...  
Keyword(s):  
Weight Loss ◽  
Sleeve Gastrectomy ◽  
Protein Intake ◽  
Severe Obesity ◽  
Protein Supplementation ◽  
Fat Free Mass ◽  
The Third ◽  
Total Protein Intake ◽  
Dietary Record ◽  
Protein Rich

An adequate protein intake prevents the loss of fat-free mass during weight loss. Laparoscopic sleeve gastrectomy (SG) jeopardizes protein intake due to post-operative dietary restriction and intolerance to protein-rich foods. The purpose of this study is to evaluate protein intake in the first three months after SG. We evaluated, 1 month and 3 months after surgery, 47 consecutive patients treated with SG. Protein intake, both from foods and from protein supplementation, was assessed through a weekly dietary record. Patients consumed 30.0 ± 10.2 g of protein/day on average from foods in the first month, with a significant increase to 34.9 ± 4.8 g of protein/day in the third month (p = 0.003). The use of protein supplementation significantly increased total protein intake to 42.3 ± 15.9 g protein/day (p < 0.001) in the first month and to 39.6 ± 14.2 g of protein/day (p = 0.002) in the third one. Compliance with supplement consumption was 63.8% in the first month and only 21.3% in the third month. In conclusion, both one and three months after SG, protein intake from foods was not sufficient. The use of modular supplements seems to have a significant impact on protein intake, but nevertheless it remains lower than recommended.

scholarly journals A Five-Ingredient Nutritional Supplement and Home-Based Resistance Exercise Improve Lean Mass and Strength in Free-Living Elderly

Nutrients ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2391 ◽  
Author(s):  
Mats I. Nilsson ◽  
Andrew Mikhail ◽  
Lucy Lan ◽  
Alessia Di Carlo ◽  
Bethanie Hamilton ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Old Age ◽  
Body Fat ◽  
Lean Mass ◽  
Daily Intake ◽  
Protein Supplementation ◽  
Muscle Quality ◽  
Free Living ◽  
Home Based ◽  
And Function

Old age is associated with lower physical activity levels, suboptimal protein intake, and desensitization to anabolic stimuli, predisposing for age-related muscle loss (sarcopenia). Although resistance exercise (RE) and protein supplementation partially protect against sarcopenia under controlled conditions, the efficacy of home-based, unsupervised RE (HBRE) and multi-ingredient supplementation (MIS) is largely unknown. In this randomized, placebo-controlled and double-blind trial, we examined the effects of HBRE/MIS on muscle mass, strength, and function in free-living, older men. Thirty-two sedentary men underwent twelve weeks of home-based resistance band training (3 d/week), in combination with daily intake of a novel five-nutrient supplement (‘Muscle5’; M5, n = 16, 77.4 ± 2.8 y) containing whey, micellar casein, creatine, vitamin D, and omega-3 fatty acids, or an isocaloric/isonitrogenous placebo (PLA; n = 16, 74.4 ± 1.3 y), containing collagen and sunflower oil. Appendicular and total lean mass (ASM; +3%, TLM; +2%), lean mass to fat ratios (ASM/% body fat; +6%, TLM/% body fat; +5%), maximal strength (grip; +8%, leg press; +17%), and function (5-Times Sit-to-Stand time; −9%) were significantly improved in the M5 group following HBRE/MIS therapy (pre vs. post tests; p < 0.05). Fast-twitch muscle fiber cross-sectional areas of the quadriceps muscle were also significantly increased in the M5 group post intervention (Type IIa; +30.9%, Type IIx, +28.5%, p < 0.05). Sub-group analysis indicated even greater gains in total lean mass in sarcopenic individuals following HBRE/MIS therapy (TLM; +1.65 kg/+3.4%, p < 0.05). We conclude that the Muscle5 supplement is a safe, well-tolerated, and effective complement to low-intensity, home-based resistance exercise and improves lean mass, strength, and overall muscle quality in old age.

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