Childhood overweight and obesity represent a growing public health problem worldwide. Since the 1980s, the global prevalence of overweight and obesity in childhood and adolescence has increased by 47%. The promotion of exercise is an important intervention to reduce the physical damage of obesity. The meta-analysis was conducted in accordance with the general guidelines for the reporting of systematic reviews and meta-analyses (PRISMA). The PubMed, SciELO, ScienceDirect and Google Scholar databases were searched from August to December 2021. The search yielded 722 titles published between 2000 and 2021. After screening the titles and abstracts, 64 duplicate articles were detected, and 27 articles were ultimately included in the systematic review, including 26 articles published in English and one published in Spanish. There was a statistically significant effect of the strength training interventions on the percentage of body fat, Test of 0 i = (p = 0.00, z = 6.92), Test of 0 = (p = 0.00, Q (9) = 42.63). The findings reveal that strength training has a positive impact on the treatment of body fat in children and adolescents with overweight and obesity.

The name of transgender woman is given to that person whose sex assigned at birth is not consistent with their gender identity or expression. Mexico occupies the second place in transfeminicides. Furthermore, the acts of violence and discrimination, also afflict this group and can be related to negative perceptions towards trans women. On the other hand, health care for trans women turns out to be inadequate because it does not cover their needs. Likewise, within the field of research in Mexico, studies that focus on trans women are scarce. Based on the aforementioned, it is evident that this population remains in a vulnerable state, and it infers incongruously in the bioethical principles that should cover this group. For this reason, bioethics is the branch of ethics that aims to provide dignified and humanized treatment of human life based on four principles: 1) beneficence, 2) non-maleficence, 3) autonomy, and 4) justice. Currently, greater awareness is required among both health service providers and researchers to provide timely care and inclusion in research protocols, which allows the generation of more epidemiological information on trans women.

With the arrival of SARS-CoV-2 worldwide, there was a change in the way of living and relating among the population, social distancing and the security measures adopted, personally and collectively, as well as other micro-losses to the that individuals and societies clashed; the fear of getting sick due to the lack of a specific treatment, the complications after the disease, the high mortality due to COVID-19; the change, or the absence, of farewell rituals for relatives, acquaintances and friends who have died from the disease; as well as everything that is lived personally in the course of this pathology that still has no end; These are elements that well deserve to be analyzed if we consider the impact they have had on the quality of life and death.

Es muy interesante y amigable el contenido del documento. Sin embargo, considero que hay apartados que se deberían fortalecer, como son los factores de riesgo y las conclusiones, ya que se quedan muy limitados respecto a la relevancia del tema.