ABSTRACT
The purpose of this study was to determine whether Far-Infrared Emitting Ceramic Materials worn as Bioceramic pants would improve neuromuscular performance, biochemical and perceptual markers in healthy individuals after maximal eccentric exercise. Twenty-two moderately active men were randomized into Bioceramic (n = 11) or Placebo (n = 11) groups. To induce muscle damage, three sets of 30 maximal isokinetic eccentric contractions of the quadriceps were performed at 60°·s-1. Participants wore the bioceramic or placebo pants for 2 hours immediately following the protocol, and then again for 2 hours prior to each subsequent testing session at 24, 48 and 72 hours post. Plasma creatine kinase and lactate dehydrogenase activity, delayed-onset muscle soreness, perceived recovery status, and maximal voluntary contraction were measured pre-exercise and 2, 24, 48, and 72 hours post-exercise. Eccentric exercise induced muscle damage as evident in significant increases in delayed-onset muscle soreness at 24 - 72 hours (p < 0.05) and creatine kinase between Pre to 2, 24, 48 and 72 hours (p < 0.05). Despite the increased delayed-onset muscle soreness and creatine kinase values, no effect of Bioceramic was evident (p > 0.05). Furthermore, decreases in maximal voluntary contraction between Pre and immediately, 2, 24, 48 and 72 hours post (p < 0.05) were reported. However, the standardized difference was moderate lower for lactate dehydrogenase at 24 h (ES = 0.50), but higher at 48 h (ES = -0.58) in the Bioceramic compared to the Placebo group. Despite inducing muscle damage, the daily use of Far-Infrared Emitting Ceramic Materials clothing over 72 hours did not facilitate recovery after maximal eccentric exercise.
ABSTRACT
O objetivo do presente estudo foi comparar os valores de potência e capacidade aeróbia entre atletas de futebol e futsal nos diferentes níveis competitivos e modalidades. A amostra foi constituída de 116 atletas do sexo masculino de seis equipes (3 de futebol e 3 de futsal) da 1ª divisão, 2ª divisão e universitário. Os participantes foram submetidos a duas sessões de coleta de dados. Na primeira sessão, uma avaliação antropométrica foi conduzida e familiarização com o teste de Carminatti (T-CAR). Na segunda sessão, foi realizado o teste de T-CAR de corrida intermitente, para determinar o pico de velocidade (PV). Para analisar as diferenças entre os valores médios dos dados antropométricos e fisiológicos das equipes e nos diferentes níveis competitivos foi utilizado ANOVA One-Way seguido do teste de Post-Hoc de Bonferroni. O Teste T para amostras independentes foi utilizado para comparar as médias entre as modalidades. O valor de P < 0,05 foi considerado como nível de significância estatística. Maiores níveis de PVT-CAR e 80,4%PVT-CAR foram reportados nos atletas de futebol da 1ª divisão comparado com o da 2ª divisão do futsal e universitários, e entre as equipes da 1ª divisão de futsal e 2ª do futebol comparado com o futsal universitário. Além disso, maiores valores do PVT-CAR nas equipes da 1ª divisão de futsal e 2ª do futebol comparado com universitários e nos atletas de futebol versus futsal (p<0,05), afirmando que existe diferença entre os níveis competitivos e modalidades. Estes resultados sugerem que atletas de futebol e aqueles que atuam em elevados níveis competitivos possuem melhor condição física no desempenho do T-CAR....(AU)
The aim of this study was to compare the power levels and aerobic capacity between soccer and futsal players on different competitive levels and modalities. One hundred and sixteen male players from three soccer and futsal teams of the 1st division, 2nd division and university participated in the study. The participants underwent two data collection sessions. In the first session, an anthropometric assessment and familiarization with Carminatti's test (T-CAR) was conducted. In the second session, the T-CAR intermittent running test was conducted to determine the peak velocity (PV). One-way ANOVA was used in combination with post hoc testing (Bonferroni) to compare the average values of anthropometric and physiological data of the teams and in different competitive levels. The T test for independent samples was used to compare the means of the modality. Significance was assumed at 5% (P < 0.05). Aerobic indices were obtained by T-CAR. Higher levels of PVT-CAR and 80,4%PVT-CAR were reported on soccer players of st division compared to the futsal of 2nd division and university, and between the teams of the 1st futsal division and 2nd soccer division compared to the university futsal. In addition, higher PVT-CAR values on teams of 1st futsal division and 2nd soccer division compared to university and soccer players versus futsal (P < 0.05), declaring that there is a difference between the competitive levels and modalities. These results suggest that soccer players and those that play at high competitive levels have better performance in TCAR....(AU)
