Abstract:Creatine supplementation during resistance training has potential beneficial effects on properties of bone in aging adults. We systematically reviewed randomized controlled trials (RCTs) investigating the effect of creatine supplementation combined with resistance training on bone mineral density (BMD) in aging adults. We searched PubMed and SPORTDiscus databases and included RCTs of ≥3 months duration that examined the combined effect of creatine and resistance training on bone mineral in adults >50 years of … Show more
“…It's believed that creatine supplementation has an effect on the increase in the activity of skeletal muscles (14,15). It has been suggested that creatine supplementation and resistance training improve properties of body composition (16,17). One possible reason for the increased lean body mass following creatine supplementation and strength training may be due to the increase in the number of satellite cells and muscle nuclear density in human skeletal muscle fibers (18).…”
Objectives: The aim of this study was to determine the effect of 8 weeks resistance training with creatine supplementation on body composition and physical fitness indexes in male futsal players. Methods: 20 trained futsal players were selected based on convenience sampling from East Azerbaijan and assigned randomly either to Ex + Cr group (Exercise + Creatin, n = 10) or Ex + Pl group (Exercise + Placebo, n = 10). All of the subjects performed resistance training program for 8 weeks. The Ex + Cr group ingested 0.3 g/kg creatine during loading phase 0.1 g/kg in maintenance phase. Body weight, fat free mass, fat percent, muscular strength, speed, anaerobic power and flexibility were measured before and after training program. Paired t-test and independent t-test were used to analyze the data. Results: The results suggested that body weight and fat free mass were significantly increased in both groups with greater improvements in Ex + Cr group (P ≤ 0.05). Moreover, Ex + Cr group demonstrated greater decrease in fat percent compared with Ex + Pl group (P ≤ 0.05). Also, muscular strength increased to a greater extent in the Ex + Cr compared with the Ex + Pl group (P ≤ 0.05). Finally, there was no significant difference between the two groups in speed, anaerobic power and flexibility (P ≥ 0.05). Conclusions: In general, it seems that resistance training along with creatine supplementation lead to greater increases in body weight, fat mass and muscular strength as well as greater decrease in fat percent than resistance training alone in trained futsal players.
“…It's believed that creatine supplementation has an effect on the increase in the activity of skeletal muscles (14,15). It has been suggested that creatine supplementation and resistance training improve properties of body composition (16,17). One possible reason for the increased lean body mass following creatine supplementation and strength training may be due to the increase in the number of satellite cells and muscle nuclear density in human skeletal muscle fibers (18).…”
Objectives: The aim of this study was to determine the effect of 8 weeks resistance training with creatine supplementation on body composition and physical fitness indexes in male futsal players. Methods: 20 trained futsal players were selected based on convenience sampling from East Azerbaijan and assigned randomly either to Ex + Cr group (Exercise + Creatin, n = 10) or Ex + Pl group (Exercise + Placebo, n = 10). All of the subjects performed resistance training program for 8 weeks. The Ex + Cr group ingested 0.3 g/kg creatine during loading phase 0.1 g/kg in maintenance phase. Body weight, fat free mass, fat percent, muscular strength, speed, anaerobic power and flexibility were measured before and after training program. Paired t-test and independent t-test were used to analyze the data. Results: The results suggested that body weight and fat free mass were significantly increased in both groups with greater improvements in Ex + Cr group (P ≤ 0.05). Moreover, Ex + Cr group demonstrated greater decrease in fat percent compared with Ex + Pl group (P ≤ 0.05). Also, muscular strength increased to a greater extent in the Ex + Cr compared with the Ex + Pl group (P ≤ 0.05). Finally, there was no significant difference between the two groups in speed, anaerobic power and flexibility (P ≥ 0.05). Conclusions: In general, it seems that resistance training along with creatine supplementation lead to greater increases in body weight, fat mass and muscular strength as well as greater decrease in fat percent than resistance training alone in trained futsal players.
“…As with its effects on markers of bone turnover, the effect of creatine on bone mineral properties in aging adults is equivocal. A recent meta-analysis [71] assessed five studies regarding the effectiveness of creatine on bone [65,69,70,72,73]. These studies assessed 3–12 months of creatine supplementation (5–8 g/day) with a loading phase of about 20 g/day for 5 days in two of the studies [65,69], combined with resistance training (2–3 days/week) in males and females (57–85 years of age).…”
Sarcopenia, defined as the age-related decrease in muscle mass, strength and physical performance, is associated with reduced bone mass and elevated low-grade inflammation. From a healthy aging perspective, interventions which overcome sarcopenia are clinically relevant. Accumulating evidence suggests that exogenous creatine supplementation has the potential to increase aging muscle mass, muscle performance, and decrease the risk of falls and possibly attenuate inflammation and loss of bone mineral. Therefore, the purpose of this review is to: (1) summarize the effects of creatine supplementation, with and without resistance training, in aging adults and discuss possible mechanisms of action, (2) examine the effects of creatine on bone biology and risk of falls, (3) evaluate the potential anti-inflammatory effects of creatine and (4) determine the safety of creatine supplementation in aging adults.
“…Apesar de termos sido capazes de subanalisar os dados de acordo com o nível de atividade física das participantes, nenhuma delas estava envolvida regularmente em um treinamento de força. No entanto, uma recente meta-análise mostrou que a suplementação de Cr em combinação ao treinamento de força não foi capaz de melhorar a DMO em idosos quando comparado ao treinamento de força isolado (Forbes et al, 2018). O efeito da suplementação de Cr juntamente com o treinamento de força a longo prazo (>12 meses) ainda precisa ser esclarecido.…”
Section: Discussionunclassified
“…(Somjen et al, 1994) e que a mesma, pode ser afetada por alguns fatores que já são conhecidos por modularem o metabolismo ósseo, como o IGF-1 (Sömjen e Kaye, 1994), a 1,25 di-hidroxivitamina D3 (Somjen et al, 1984), e o paratormônio (Somjen et al, 1985;Kaye et al, 1990). Além disso, como citado anteriormente, o tratamento com uma substância análoga a Cr provoca distúrbios na formação de osso endocondral tanto in vivo quanto in vitro (Funanage et al, 1992). Somado a isso, sabe-se que durante a osteoclastogênese ocorre aumento da atividade enzimática da CK cerebral e que a administração de um fármaco (ciclocreatina) capaz de inibir a sua atividade leva a supressão da reabsorção óssea e consequentemente da diferenciação dos osteoclastos in vitro, o que possivelmente pode afetar o turnover ósseo (Chang et al, 2008).…”
Section: Consumo Alimentarunclassified
“…De fato, estudos pré-clínicos tem demonstrado que a Cr é capaz de estimular o desenvolvimento e a diferenciação de osteoblastos, células responsáveis pelo processo de formação óssea (Gerber et al, 2005). Da mesma maneira, a administração de ácido B-guanidinopropiônico (GPA), um análogo da Cr, competidor da captação celular desse substrato, que resulta em drásticas reduções dos níveis de Cr e PCr intracelulares e, consequentemente, em alterações no sistema Cr/ATP/CK, provoca distúrbios na ossificação endocondral in vitro e in vivo (Funanage et al, 1992). Adicionalmente, a suplementação de Cr demonstrou eficiência na melhora de parâmetros biomecânicos e na densidade mineral óssea (DMO) de ratos Sprague-Dawley, independentemente do treinamento físico concomitante (Antolic et al, 2007).…”
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