Publications by authors named "M C Chagas"
Virtual Reality High-Intensity Interval Training Exergaming Compared to Traditional High-Intensity Circuit Training Among Medical Students: Pilot Crossover Study.
JMIR Serious Games
January 2025
Background: This study evaluated the effectiveness of a virtual reality (VR) high-intensity interval training (HIIT) boxing protocol compared to traditional high-intensity circuit training (HICT) in improving exercise motivation, engagement, and physiological responses among 30 healthy medical students.
Objective: The purpose was to compare the VR HIIT protocol, which involved using an Oculus Quest 2 for a futuristic exoskeleton game experience, with a traditional 12-exercise HICT.
Methods: In total, 30 medical students engaged in both VR HIIT, using an Oculus Quest 2 for a futuristic exoskeleton game experience, and a traditional 12-exercise HICT.
Mart. is a tropical palm tree native to the Amazon region. Its fruit, commonly known as açaí, has gained widespread recognition for its therapeutic potential, driving the expansion of pharmacological studies to validate its traditional uses.
View Article and Find Full Text PDFBackground: The recognition of facial expressions of emotions is an essential skill for social functioning, as it enables recognizing the possible intentions of others.
Main Body: Cultural context is an important aspect to consider in this skill, as it tends to modulate the recognition of facial expressions.
Objective: To develop and validate a set of facial expressions of basic emotions of Brazilian individuals considering the population distribution of the country according to age group, sex, and race.
Background And Purpose: Resistance training exercise provides increases in muscle size and is used by coaches and health care professional as a tool to improve functional performance. The aim of the present study was to investigate the effect of 10 weeks of resistance training program performed on the bench press (BP) exercise on the hypertrophic responses of four different muscles (pectoralis major, anterior and medial deltoid, brachii, and pectoralis minor) involved in the task compared to controls.
Methods: Twenty-four healthy males were recruited, and thirteen performed a resistance training intervention while eleven were control.
Article Synopsis
- The study investigates how using small datasets to select an optimal cutoff score for the Patient Health Questionnaire-9 (PHQ-9) can lead to inaccurate results.
- Researchers evaluated whether data-driven methods for cutoff selection resulted in scores that were significantly different from the true population optimal score and if these methods produced biased accuracy estimates.
- Findings showed that many small studies frequently failed to identify the correct optimal cutoff score, particularly in smaller samples, leading to an overestimation of test sensitivity.