Navegando por Autor "Cerqueira, Matheus Santos"
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Item Can adipose tissue influence the evaluation of thermographic images in adolescents?(2023) Reis, Hamilton Henrique Teixeira; Brito, Ciro José; Sillero Quintana, Manuel; Silva, Alisson Gomes da; Fernández Cuevas, Ismael; Cerqueira, Matheus Santos; Werneck, Francisco Zacaron; Marins, João Carlos BouzasInfrared thermography (IRT) is a technology easy to use for clinical purposes as a pre- diagnostic tool for many health conditions. However, the analysis process of a thermographic image needs to be meticulous to make an appropriate decision. The adipose tissue is considered a potential influence factor in the skin temperature (Tsk) values obtained by IRT. This study aimed to verify the influence of body fat percentage (%BF) on Tsk measured by IRT in male adolescents. A total of 100 adolescents (16.79 ± 0.97 years old and body mass index of 18.41 ± 2.32 kg/m2 ) was divided into two groups through the results of a dual-energy X-ray absorptiometry analysis: obese (n = 50, %BF 30.21 ± 3.79) and non-obese (n = 50, %BF 11.33 ± 3.08). Thermograms were obtained by a FLIR T420 infrared camera and analyzed by ThermoHuman® software version 2.12, subdividing the body into seven regions of interest (ROI). The results showed that obese adolescents presented lower mean Tsk values than the non-obese for all ROIs (p < 0.05), with emphasis on the global Tsk (0.91 ◦C) and anterior (1.28 ◦C) and posterior trunk (1.18 ◦C), with “very large” effect size values. A negative correlation was observed in all the ROI (p < 0.01), mainly in the anterior (r = −0.71, p < 0.001) and posterior trunk (r = −0.65, p < 0.001). Tables of thermal normality were proposed for different ROIs according to the classification of obesity. In conclusion, the %BF affects the registered Tsk values in male Brazilian adolescents assessed by IRT.Item Can body mass index influence the skin temperature of adolescents? : a preliminary study with the use of infrared thermography.(2022) Reis, Hamilton Henrique Teixeira; Brito, Ciro José; Silva, Alisson Gomes da; Sillero Quintana, Manuel; Reis, Victória Esther Teixeira; Werneck, Francisco Zacaron; Fernández Cuevas, Ismael; Cerqueira, Matheus Santos; Marins, João Carlos BouzasInfrared thermography (IRT) has been used to assess skin temperature (Tsk), especially during the COVID-19 pandemic, as an important tool in medical screening not only of the general population, but also of young athletes. However, the subcutaneous adipose tissue can act as an insulator when the Tsk is assessed by IRT, modifying the normal Tsk data and leading to their misinterpretation. Considering that the body mass index (BMI) is an important predictor of obesity, the objective of this study was to verify if the Tsk measured by IRT is affected by the BMI in adolescents. A preliminary study was carried out being four participants intentionally selected, all 16 years old, each one classified in a different BMI range according to the criteria of the World Health Organization for the adolescent population: underweight, healthy weight, overweight and obesity. Four thermograms of each participant were recorded and the ThermoHuman® software was used to evaluate 82 regions of interest (ROI), which were integrated into 6 body regions. Using healthy weight subjects as a reference, it was found a progressive reduction in Tsk in all ROI compared to overweight and obese participants, with emphasis on the anterior region of the trunk (3.04% and 6.69% less respectively), and an increase in the Tsk of all body regions for the underweight subject. There are indications that BMI can influence the Tsk value in adolescents and should be taken into account when analyzing thermograms for a correct evaluation of thermal normality.Item Cardiorespiratory fitness and physical activity among children and adolescents : 3-year longitudinal study in Brazil.(2022) Silva, Diego Augusto Santos; Gonçalves, Eliane Cristina de Andrade; Coelho, Emerson Filipino; Cerqueira, Matheus Santos; Werneck, Francisco ZacaronThe aim of this study was to investigate the effect of physical activity (PA) levels over 36 months on the cardiorespiratory fitness (CRF) of children and adolescents. This was a longitudinal study carried out from 2016 to 2019 with 127 children and adolescents (82 males and 45 females) aged 13.5 ± 1.2 years at baseline. The 20 m shuttle run test (20 mSRT) was used to predict CRF. The questionnaires PAQ-C and PAQ-A were used to investigate PA. The 2 × 4 repeated measures ANCOVA was used, and the significance level was p ≤ 0.05. There was a linear trend in the interaction between level of PA and CRF throughout the 36-month study period in both sexes (males— distance covered: F1.78 = 4.567; p = 0.04; VO2max: F1.78 = 5.323; p = 0.02; females—distance covered: F1.41 = 6.989; p = 0.01; VO2max: F1.41 = 6.585; p = 0.01). Physically active males showed a gradual increase in CRF throughout the analyzed period. For females, CRF remained constant in the first 24 months, showing a slight increase only after 36 months in physically active ones. The findings of this study reinforce the importance of PA throughout childhood and adolescence to improve CRF.Item Effect of a school soccer competition with consecutive day games on the recovery status of U-19 players.(2018) Chaves, Suene Franciele Nunes; Cerqueira, Matheus Santos; Tucher, Guilherme; Dias, Bernardo Miloski; Coelho, Daniel Barbosa; Borba, Diego de Alcantara; Pimenta, Pedro M. Q.; Ferreira Júnior, João BatistaThe present study aimed to evaluate the effect of a school soccer competition with consecutive day games on the recovery status of U-19 players. Thirty-one school athletes (17.1±1.1 years) who played a U-19 school soccer competition (composed of two groups of four soccer teams each, followed by semifinals and final) were randomly evaluated. Games lasted 70 min (two periods of 35 min with 15 min rest interval), and they were played on consecutive days with 24 h between each game. Delayed onset muscle soreness (DOMS) and Total Quality Recovery (TQR) were measured before group phase games (n= 31) and semifinals games (n= 18). The internal game load was measured by the session rate of perceived exertion (session-RPE) method. TQR was higher before the first game when compared to the other games (p< 0.001). DOMS increased after the first game and did not return to baseline before the fourth game. Both session-RPE and internal load of the fourth game were higher than in the other games (p< 0.001). In addition, there was no correlation between internal game load and TQR (p> 0.05). The monotony observed during the evaluated period was 3.1±2.0 AU. The results indicate that the 24 h rest period seems to be insufficient for complete recovery of U-19 soccer school athletes, suggesting the organization of U-19 school soccer competitions with higher rest interval between games and search for methods to increase the recovery rate.