Chronic capsiate supplementation increases fat-free mass and upper body strength but not the inflammatory response to resistance exercise in young untrained men: a randomized, placebo-controlled and double-blind study.
BACKGROUND
Acute capsaicinoid and capsinoid supplementation has endurance and resistance exercise benefits; however, if these short-term performance benefits translate into chronic benefits when combined with resistance training is currently unknown. This study investigated changes of chronic Capsiate supplementation on muscular adaptations, inflammatory response and performance in untrained men.


METHODS
Twenty untrained men were randomized to ingest 12 mg Capsiate (CAP) or placebo in a parallel, double-blind design. Body composition and performance were measured at pre-training and after 6 weeks of resistance training. An acute resistance exercise session test was performed pre and post-intervention. Blood samples were collected at rest and post-resistance exercise to analyze Tumor necrosis factor- (TNF-), Soluble TNF- receptor (sTNF-r), Interleukin-6 (IL-6) and Interleukin-10 (IL-10).


RESULTS
Exercise and CAP supplementation increased fat-free mass in comparison to baseline by 1.5 kg (P < 0.001), however, the majority of the increase (1.0 kg) resulted from an increase in total body water. The CAP change scores for fat-free mass were significantly greater in comparison to the placebo (CAP ∆%= 2.1 ± 1.8 %, PLA ∆%= 0.7 ± 1.3 %, P = 0.043) and there was a significant difference between groups in the bench press exercise (P = 0.034) with greater upper body strength change score for CAP (∆%= 13.4 ± 9.1 %) compared to placebo (∆%= 5.8 ± 5.2 %), P = 0.041. CAP had no effect on lower body strength and no supplementation interactions were observed for all cytokines in response to acute resistance exercise (P > 0.05).


CONCLUSION
Chronic Capsiate supplementation combined with resistance training during short period (6 weeks) increased fat-free mass and upper body strength but not inflammatory response and performance in young untrained men.
['de Moura E Silva|Vilton Emanoel Lopes|VEL|', 'Cholewa|Jason Michael|JM|', 'Jäger|Ralf|R|', 'Zanchi|Nelo Eidy|NE|', 'de Freitas|Marcelo Conrado|MC|', 'de Moura|Rayane Carvalho|RC|', 'Barros|Esmeralda Maria Lustosa|EML|', 'Antunes|Barbara Moura|BM|', 'Caperuto|Erico Chagas|EC|', 'Ribeiro|Sergio Luiz Galan|SLG|', 'Lira|Fabio Santos|FS|', 'Pereira Dos Santos|Marcos Antônio|MA|', 'Rossi|Fabrício Eduardo|FE|http://orcid.org/0000-0002-0594-2529']
D000328:Adult D054874:Athletic Performance D001823:Body Composition D001834:Body Water D002211:Capsaicin D004311:Double-Blind Method D006801:Humans D018836:Inflammation Mediators D016753:Interleukin-10 D015850:Interleukin-6 D008297:Male D053580:Muscle Strength D018482:Muscle, Skeletal D018124:Receptors, Tumor Necrosis Factor D055070:Resistance Training D014409:Tumor Necrosis Factor-alpha D055815:Young Adult
Performance Hypertrophy Pre-workout Strength training