Effects of short-term ingestion of Russian Tarragon prior to creatine monohydrate supplementation on whole body and muscle creatine retention and anaerobic sprint capacity: a preliminary investigation

Oliver, Jonathan M.; Jagim, Andrew R.; Pischel, Ivo; Jäger, Ralf; Purpura, Martin; Sanchez, Adam; Fluckey, James D.; Riechman, Steven E.; Greenwood, Michael; Kelly, Katherine A.; Meininger, Cynthia J.; Rasmussen, Christopher; Kreider, Richard B.

doi:10.1186/1550-2783-11-6

Cited by 8 publications

(7 citation statements)

References 25 publications

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“…These findings replicate results from a previous study where leg stiffness (both absolute and relative) was compromised ( p < 0.001) after a soccer specific fatigue protocol ( Lehnert et al, 2016 ). Our results can be also compared with those of another recent study ( Oliver et al, 2014 ) in which muscle stiffness was determined in 15-year-old soccer players. The authors reported a non-significant decrease in terms of absolute muscle stiffness after a fatigue protocol, but this might be attributed to the fact that they used a soccer-specific intermittent exercise test performed on a non-motorised treadmill and the duration of the test only corresponded to one half of simulated match play.…”

Section: Discussionmentioning

confidence: 61%

Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players

Lehnert

Croix

Xaverova

et al. 2018

Journal of Human Kinetics

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The aim of this study was to examine the acute effects of soccer specific fatigue on muscular and neuromuscular function in male youth soccer players. Elite soccer players (n = 20; age 15.7 ± 0.5 y; body height 177.75 ± 6.61 cm; body mass 67.28 ± 8.29 kg) were measured before and after soccer specific exercise (SAFT90). The reactive strength index (RSI) was determined by a drop jump test, leg stiffness (LS) by a 20 sub-maximal two-legged hopping test, and a functional hamstring to quadriceps strength ratio from isokinetic concentric and eccentric strength of the dominant and non-dominant leg (measured at angular velocities of 1.05 rad · s−1 and 3.14 rad · s−1). Metabolic response to the SAFT90 was determined by blood lactate and perceived exertion was assessed by the Borg scale. After simulated match play, a significant decrease in absolute LS (t = 4.411; p < 0.001; ω2 = 0.48) and relative LS (t = 4.326; p < 0.001; ω2 = 0.49) was observed and the RSI increased significantly (t = 3.806; p = 0.001; ω2 = 0.40). A reduction in LS found after the SAFT90 indicates possible reduction in dynamic knee stabilization. However, if we consider the changes in other observed variables, the present study did not clearly confirm that fatigue induced by a soccer specific protocol increased the risk of ACL and hamstring injury. This may be attributed to the simulated rather than actual match play used in the present study.

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Section: Discussionmentioning

confidence: 61%

Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players

Lehnert

Croix

Xaverova

et al. 2018

Journal of Human Kinetics

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“…The authors suggest that theoretically, ingesting RT extract prior to Cr loading may enhance insulin sensitivity and thereby promote greater Cr absorption/retention. In a follow-up study by this group, Oliver et al [ 69 ] used a double-blind, randomized, and crossover manner to examine the effect of consuming RT during 5 days of CrM loading. Recreationally trained males ingested 500 mg of aqueous RT extract or 500 mg placebo 30 min prior to ingesting 5 g of CrM twice per day for 5 days and then repeated after a 6-week washout period.…”

Section: Creatine With Insulin Mimickersmentioning

confidence: 98%

Effective Nutritional Supplement Combinations

Cooke¹,

Cribb²

2015

Nutritional Supplements in Sports and Exercise

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Few supplement combinations that are marketed to athletes are supported by scientifi c evidence of their effectiveness. Under the rigor of scientifi c investigation, we often see that the patented combination fails to provide any greater benefi t when compared to an active (generic) ingredient. The focus of this chapter is supplement combinations and dosing strategies that are effective at promoting an acute physiological response that may improve/enhance exercise performance and/or infl uence chronic adaptations desired from training. In recent years, there has been a particular focus on two nutrition ergogenic aids-creatine monohydrate and protein/ amino acids-in combination with specifi c nutrients in an effort to augment or add to their already established independent ergogenic effects. These combinations and others are discussed in this chapter.

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“…Se ha demostrado que el monohidrato de creatina (MC): -Incrementa los niveles de fosfocreatina en el músculo, molécula esencial de la vía anaeróbica aláctica para la resíntesis del ATP (trifosfato de adenosina) (3,4,7,8). -Facilita la hipertrofia muscular (9).…”

Section: Mecanismo De Acciónunclassified

Ayudas ergogénicas en el deporte

Moriones¹,

Santos²

2017

Nutr Hosp

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Introduction: Very few nutritional supplements have scientifi cally demonstrated their effectiveness as an ergogenic aid. This review will examine creatine monohydrate (MC), the β-hydroxy-β-methylbutyrate (HMB), sodium bicarbonate (BS), the β-alanine and caffeine. Objectives: To analyze the effi cacy, mechanisms of action, dose, side effects and some sports that can benefi t from their consumption. Methods: Searching in PubMed bibliographic database reviews from the last 15 years and original articles from the last 5 years of the studied substances. Results: Doses of 20 mg/day for 4-7 days are effective in improving strength and muscular power and performance in short and repeated sprints. HMB at doses of 3 g/day for at least 2 weeks contributes to increased lean mass and fat-free mass. The intake of 0.3 g/kg of BS improves performance on tests of 400-1,500 meters in athletics and intermittent sprints. Meanwhile, doses of 80 mg/kg/day of β-alanine for 4-10 weeks may improve performance in high-intensity intermittent exercise. Finally, caffeine at doses of 2 mg/kg improves responsiveness and 3-6 mg/kg improves performance in endurance tests. Conclusions: The revised supplements have shown their effi cacy in physical performance, but it is needed to keep in mind that most studies have been conducted with recreational-level athletes. Generally, the better the individual´s fi tness level is the less improvement in physical performance the supplement shows. However, an increase of only 1% may sometimes allow the athlete to advance several positions in a fi nal. Finally, we should draw attention to the importance of optimizing nutrition before considering the introduction of sports supplements, especially in children and youth. All analyzed substances have scientifi c basis supporting its ergogenic effect. All of them can be found in the market with Certifi cate of Quality and Purity.

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Effects of short-term ingestion of Russian Tarragon prior to creatine monohydrate supplementation on whole body and muscle creatine retention and anaerobic sprint capacity: a preliminary investigation

Cited by 8 publications

References 25 publications

Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players

Changes in Injury Risk Mechanisms After Soccer-Specific Fatigue in Male Youth Soccer Players

Effective Nutritional Supplement Combinations

Ayudas ergogénicas en el deporte

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