Publications by authors named "Ivan Renteria"

Background: Scarce evidence exists on barriers to physical activity in Mexican women. Despite evidence from other countries, no research has investigated the influence of the breast on PA in this population.

Objective: To determine the association between the breast and physical activity in Mexican women.

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High-intensity interval training (HIIT) is an exercise modality acknowledged to maintain physical fitness with more engagement in an active lifestyle compared with other traditional exercise models. Nevertheless, its effects on cardiac control and physical performance in an online-guided setting are not yet clarified. The present work assessed physical fitness and heart rate variability (HRV) before and after an online, home-based HIIT program in college-age students while pandemic lockdowns were in effect.

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Background/objective: The quarantine caused by the COVID-19 pandemic increased sedentary behavior, psychological stress, and sleep disturbances in the population favoring the installation of alterations in the cardiovascular system. In this sense, physical exercise has widely been suggested as an efficient treatment to improve health. The current study determined the impact of short-term high-intensity circuit training (HICT) on resting heart rate variability (HRV) in adults.

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Since 2020, the world has been suffering from a pandemic that has affected thousands of people regardless of socio-economic conditions, forcing the population to adopt different strategies to prevent and control the advance of the disease, one of which is social distancing. Even though social distancing is a safe strategy to reduce the spread of COVID-19, it is also the cause of a rising sedentary behavior. This behavior develops an excess of fat tissue that leads to metabolic and inflammatory disruption related to chronic diseases and mental health disorders, such as anxiety, depression, and sleep issues.

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Acute bouts of intense exercise increase lactate concentration, which in turn stimulates brain-derived neurotrophic factor (BDNF) production. Cortisol released during intense exercise might inhibit BDNF synthesis. This study examined the acute effects of 2 protocols of strenuous exercise on serum BDNF.

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Teacher-endorsed supporting behaviors present themselves as key influencers of student adaptive academic and social functions. The objective of this paper was twofold. First, this study sought to test a model in which student-perceived autonomy support was associated with group cohesion, considering the mediating role of basic psychological needs satisfaction and intrinsic motivation.

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Introduction: Obesity is a metabolic disorder that creates oxidizing conditions, which can generate high levels of physiological stress as well as a disturbance in the state of redox cell known as Oxidative Stress.

Objective: To examine the association between the damage on chromosomal DNA and the total antioxidant capacity (TAC) in obese children with severe obesity.

Methods: Participants were 11 children with a mean age and body mass index of 9.

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Introduction: Overweight and obesity in children in the Mexico-USA border have evolved differently to the rest of their respective countries. New reference values of cholesterol, triglycerides and glucose are required to treatment.

Objective: To determine the reference values of cholesterol, triglycerides and glucose in Hispanic children between 6 and 11 years in the Mexico-USA border.

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