14 research outputs found
Strength and hypertrophy responses to constant and decreasing rest intervals in trained men using creatine supplementation
<p>Abstract</p> <p>Background</p> <p>The purpose of the current study was to compare strength and hypertrophy responses to resistance training programs that instituted constant rest intervals (CI) and decreasing rest intervals (DI) between sets over the course of eight weeks by trained men who supplemented with creatine monohydrate (CR).</p> <p>Methods</p> <p>Twenty-two recreationally trained men were randomly assigned to a CI group (n = 11; 22.3 ± 1 years; 77.7 ± 5.4 kg; 180 ± 2.2 cm) or a DI group (n = 11; 22 ± 2.5 years; 75.8 ± 4.9 kg; 178.8 ± 3.4 cm). Subjects in both groups supplemented with CR; the only difference between groups was the rest interval instituted between sets; the CI group used 2 minutes rest intervals between sets and exercises for the entire 8-weeks of training, while the DI group started with a 2 minute rest interval the first two weeks; after which the rest interval between sets was decreased 15 seconds per week (i.e. 2 minutes decreasing to 30 seconds between sets). Pre- and post-intervention maximal strength for the free weight back squat and bench press exercises and isokinetic peak torque were assessed for the knee extensors and flexors. Additionally, muscle cross-sectional area (CSA) of the right thigh and upper arm was measured using magnetic resonance imaging.</p> <p>Results</p> <p>Both groups demonstrated significant increases in back squat and bench press maximal strength, knee extensor and flexor isokinetic peak torque, and upper arm and right thigh CSA from pre- to post-training (p ≤ 0.0001); however, there were no significant differences between groups for any of these variables. The total volume for the bench press and back squat were significantly greater for CI group versus the DI group.</p> <p>Conclusions</p> <p>We report that the combination of CR supplementation and resistance training can increase muscular strength, isokinetic peak torque, and muscle CSA, irrespective of the rest interval length between sets. Because the volume of training was greater for the CI group versus the DI group, yet strength gains were similar, the creatine supplementation appeared to bolster adaptations for the DI group, even in the presence of significantly less volume. However, further research is needed with the inclusion of a control group not receiving supplementation combined and resistance training with decreasing rest intervals to further elucidate such hypotheses.</p
The effects of creatine supplementation on thermoregulation and physical (cognitive) performance: a review and future prospects
One-step models for soft computing techniques. Industrial application to image processing in quality assurance process
Creatine supplementation reduces plasma levels of pro-inflammatory cytokines and PGE2 after a half-ironman competition
Efeitos da suplementação de creatina e do treinamento de potência sobre a performance e a massa corporal magra de ratos
Effect of short-term creatine supplementation on markers of skeletal muscle damage after strenuous contractile activity
Creatine Supplementation and Lower Limb Strength Performance: A Systematic Review and Meta-Analyses
Objective: The objective of this systematic review was to evaluate meta-analyzed effects of creatine supplementation on lower limb strength performance
Hydrophilic Interaction Chromatography (HILIC) in the Analysis of Relevant Quality and Safety Biochemical Compounds in Meat, Poultry and Processed Meats
HPLC methods based on hydrophilic interaction chromatography (HILIC) have been recently applied to the analysis of biochemical compounds, related to the quality, in meat and poultry as well as meat products like cooked ham and dry-cured ham. This type of chromatography has also been successfully used for the analysis of antibiotic residues in meat and poultry. HILIC chromatography has an increasing relevance for the analysis of polar compounds in foods due to its good retention without need for derivatisation. In general, HILIC-based methods have shown good performance for the analysis of polar biochemical compounds like dipeptides, creatine and creatinine, nucleotides and nucleosides, sphingolipids and residues, mainly antibiotics, in rather complex matrices such as muscles. Thus, this manuscript presents a review of recent applications of HILIC methods for the analysis of quality-related biochemical compounds and residues in meat, poultry and processed meats. © 2010 Springer Science+Business Media, LLC.Grant AGL2007-65379-C02-01 from Ministry of Science and Innovation (Spain) and FEDER funds are fully acknowledged. FPU Scholarship from Ministerio de Ciencia y Educacion (Spain) to L. M. and scholarship from Consejo Nacional de Ciencia y Tecnologia (CONACyT) and Colegio de Postgraduados (Mexico) to A. S. H-C. are fully acknowledged. This work was performed under the Associated Unit IAD (UPV)-IATA (CSIC).Mora, L.; Hernandez-Cazares, AS.; Aristoy, M.; Toldrá Vilardell, F.; Reig Riera, MM. (2011). Hydrophilic Interaction Chromatography (HILIC) in the Analysis of Relevant Quality and Safety Biochemical Compounds in Meat, Poultry and Processed Meats. 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