Preferences in the use of nutritional supplements and the correctness of their selection for training purposes

Korczak, Robert; Kruszewski, Marek; Kruszewski, Artur; Kuźmicki, Stanisław; Olszewska, Agnieszka Anna; Kepa, Grzegorz; Landowski, Karol

doi:10.29359/bjhpa.08.4.11

Cited by 5 publications

(10 citation statements)

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“…The prevalence of supplementation among athletes has been estimated at 37% to 89% [1], where the energy drinks were the most popular supplements next to multi-vitamins in the young adult population (18-35 years) [2]. However, pre-workout supplements take many forms and are based on multiple active ingredients and blends and in the majority of cases, the efficacy and safety has not been established [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study

Kaczka

Batra

Kubicka

et al. 2020

IJERPH

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Background: The purpose of this research was to investigate the acute effects of a pre-workout supplement on anaerobic performance in resistance-trained men. Methods: Twenty-three men underwent three randomized, double-blind testing sessions separated by a seven-day break. The participants performed three tests: isokinetic strength, three repetition maximum (3-RM) strength and Wingate. Statistical analysis was conducted in R environment. Linear mixed models were estimated via R package lme4. Results: Mean T@0.2 s was significantly greater in supplemented condition for right and left knee flexors (PL: 103.2 ± 37.6 Nm; supplemented condition: 131.8 ± 29.3 Nm (p = 0.001)), and PL: 103.7 ± 39.3; supplemented condition: 129.4 ± 28.4 (p = 0.001)). T@0.2 s for right and left knee extensors (PL: 202.6 ± 58.6 Nm; supplemented condition: 237.2 ± 54.7 Nm (p = 0.001); PL: 203.3 ± 63.2 Nm, supplemented condition: 229.8 ± 50.8 Nm (p = 0.002)). Significant difference was in mean anaerobic power between supplemented and PL condition for right and left knee flexors (p = 0.002, p = 0.005) and for right and left knee extensors (p = 0.001 and p = 0.002). TTP was significantly shorter in supplemented condition for both sides knee flexors (p = 0.002). There was a significant difference for mean power in the Wingate test (placebo: 8.5 ± 0.6 W/kg; supplemented condition: 8.7 ± 0.5 W/kg (p = 0.038)). Mean 3-RM was significantly greater in supplemented condition (p = 0.001). Conclusions: The supplement significantly improves upper and lower body strength and power output in resistance-trained men.

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Section: Introductionmentioning

confidence: 99%

Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study

Kaczka

Batra

Kubicka

et al. 2020

IJERPH

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“…O instrumento de recolha de dados mais utilizado foi o questionário (12 artigos; 85,7%) (Dascombe et al, 2008;Lima et al, 2010;Tsitsimpikou et al, 2011;Silva & Marins, 2013;Assis et al, 2015;Peçanha et al, 2015;Judge et al, 2015;Frączek et al, 2016;Gacek, 2016;Ivković, 2016;Korczak et al, 2016;Naves et al, 2016) e apenas dois estudos (14,3%) (Stewart et al, 2013;Figueira & Cazal, 2017) utilizaram a entrevista, sendo que uma entrevista foi acompanhada por um questionário (Figueira & Cazal, 2017).…”

Section: Resultsunclassified

“…A maioria dos estudos investigou atletas de uma modalidade desportiva (10 artigos; 71,4%) (Lima et al, 2010;Tsitsimpikou et al, 2011;Stewart et al, 2013;Assis et al, 2015;Peçanha et al, 2015;Judge et al, 2015;Gacek, 2016;Ivković, 2016;Korczak et al, 2016;Naves et al, 2016), três (21,4%) estudos (Dascombe et al, 2008;Silva & Marins, 2013;Figueira & Cazal, 2017) A maioria dos estudos tinha na sua amostra atletas não profissionais (8 artigos; 57,1%) (Lima et al, 2010;Tsitsimpikou et al, 2011;Assis et al, 2015;Peçanha et al, 2015;Judge et al, 2015;Korczak et al, 2016;Naves et al, 2016;Figueira & Cazal, 2017) sendo que nos restantes seis (42,9%) estudos (Dascombe et al, 2008;Silva & Marins, 2013;Stewart et al, 2013;Frączek et al, 2016;Gacek, 2016;Ivković, 2016) a amostra era composta por atletas profissionais.…”

Section: Resultsunclassified

“…A lista dos suplementos mais consumidos apresentou uma grande variação. No entanto, em nove estudos (69,2%) (Tsitsimpikou et al, 2011;Silva & Marins, 2013;Assis et al, 2015;Peçanha et al, 2015;Gacek, 2016;Ivković, 2016;Korczak et al, 2016;Naves et al, 2016;Figueira & Cazal, 2017) os suplementos proteicos estavam entre os três suplementos mais frequentemente citados, seguido de aminoácidos (6 artigos; 46,2%) (Tsitsimpikou et al, 2011;Assis et al, 2015;Peçanha et al, 2015;Korczak et al, 2016;Naves et al, 2016;Figueira & Cazal, 2017), vitaminas (5 artigos; 38,5%) (Dascombe et al, 2008;Tsitsimpikou et al, 2011;Stewart et al, 2013;Gacek, 2016;Ivković, 2016) e minerais (4 artigos; 30,8%) (Dascombe et al, 2008;Stewart et al, 2013;Ivković, 2016;Figueira & Cazal, 2017). Dos 14 estudos incluídos na presente revisão, oito (57,1%) (Lima et al, 2010;Tsitsimpikou et al, 2011;Silva & Marins, 2013;Assis et al, 2015;Judge et al, 2015;Peçanha et al, 2015;Ivković, 2016;Figueira & Cazal, 2017) investigaram a fonte de indicação/ aconselhamento para o uso de suplementos nutricionais, sendo as mais citadas: nutricionista (5 artigos; 62,5%) (Lima et al, 2010;Assis et al, 2015;Judge et al, 2015;Peçanha et al, 2015;…”

Section: Resultsunclassified

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Consumo de suplementos alimentares por desportistas: revisão sistemática da literatura

Fonte¹,

Pereira²,

Fernandes³

2021

RevSALUS

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ResumoIntrodução: Uma alimentação variada e energeticamente adequada é capaz de proporcionar quantidades apropriadas de todos os nutrientes essenciais. Porém, são muitos os desportistas que ingerem suplementos nutricionais, sem a orientação de um profissional de saúde e sem o conhecimento exato dos seus possíveis benefícios. Objetivo: Realizar uma revisão sistemática da literatura sobre a prevalência e os tipos de suplementos nutricionais consumidos pelos desportistas, e compreender quais as principais fontes de indicação e motivos para o uso de suplementos nutricionais. Material e métodos: Foi realizada uma pesquisa bibliográfica nas bases de dados Pubmed e Web of Science. Neste contexto, foram incluídas todas as publicações disponíveis entre janeiro de 2007 e fevereiro de 2018 que cumpriam os critérios de inclusão sendo selecionados 14 artigos de um total de 1054. Resultados: A prevalência do uso de suplementos variou de 13,3% a 100%, constatando-se que nos artigos que incluíam apenas atletas profissionais a prevalência de consumo de suplementos nutricionais variou de 46,2% a 90,9%. Em relação aos suplementos mais consumidos destacaramse os suplementos proteicos, aminoácidos, vitaminas e minerais. Constatou-se, ainda, que os desportistas procuram informações sobre o seu consumo com nutricionistas, amigos, treinador e personal trainer, sendo que alguns recorrem à autoprescrição. Os principais motivos da sua ingestão relacionaram-se com o melhor desempenho desportivo e manutenção da saúde. Conclusão: Os dados revelaram um amplo intervalo de variação na utilização de suplementos pelos desportistas. Por isso, considera-se imperativo promover programas de educação nutricional para desportistas, enfatizando a mensagem sobre os riscos e benefícios associados ao consumo de suplementos nutricionais, assim como as vantagens associadas a uma alimentação saudável e equilibrada.

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“…The prevalence of supplementation among athletes has been estimated at 37% to 89% (1), where the energy drinks were the most popular supplements next to multi-vitamins in the young adult population (18-35 years) ( 2 ). However, pre-workout supplements take many forms and are based on multiple active ingredients and blends and in the majority of cases the efficacy and safety has not been established (3,4).…”

Section: Introductionmentioning

confidence: 99%

Effects of pre-workout multi-ingredient supplement on anaerobic performance: randomized double-blind crossover study

Kaczka

Batra

Kubicka

et al. 2020

Preprint

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Background: The purpose of this study was to investigate the acute effects of commercially available pre-workout supplement Knockout 2.0 ® on anaerobic performance in resistance trained men.Methods: Twenty-three men underwent three testing sessions administrated in a randomized and double-blind fashion separated by a seven-day break. The participants performed three exercise tests: isokinetic strength test, maximal strength test and Wingate test. Statistical analysis was conducted in R environment. Linear mixed models were estimated via R package lme4.Results: The mean knee peak torque was significantly greater in supplemented group for right and left knee flexors (placebo: 103.17 ± 37.61 Nm, and supplemented group: 131.84 ± 29.31 Nm where p=0.001, and placebo: 103.72 ± 39.35, and supplemented group: 129.38 ± 28.44, where p=0.001; respectively) as well as for right and left knee extensors (placebo: 202.65 ± 58.64 Nm, and supplemented group: 237.22 ± 54.75 Nm where p=0.001, and placebo: 203.27 ± 63.2 Nm versus supplemented group: 229.84 ± 50.8 Nm where p=0.002; respectively).The significant difference was observed in mean anaerobic power between supplemented and placebo group for right and left knee flexors (p=0.002 and p=0.005, respectively) as well as for right and left knee extensors (p=0.001 and p=0.002; respectively).There was also observed that the time to peak torque was significantly greater in supplemented group for right and left knee flexors (p=0.002 for both legs). The significant difference was also observed in mean power between supplemented and placebo group during Wingate test (placebo: 8.49 ± 0.57 W/kg, and supplemented group: 8.66 ± 0.55 W/kg where p=0.038). Moreover the mean 3-RM strength test was significantly greater in supplemented group with p=0.001.Conclusions: The results of the study indicate that Knockout 2.0® significantly improves upper and lower body strength and power output in resistance trained men.

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Preferences in the use of nutritional supplements and the correctness of their selection for training purposes

Cited by 5 publications

References 0 publications

Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study

Effects of Pre-Workout Multi-Ingredient Supplement on Anaerobic Performance: Randomized Double-Blind Crossover Study

Consumo de suplementos alimentares por desportistas: revisão sistemática da literatura

Effects of pre-workout multi-ingredient supplement on anaerobic performance: randomized double-blind crossover study

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