[Measurement by accelerometry of physical activity levels in a sample of Spanish adolescents].

Objectives: To establish the relationship between the level of physical activity (PA) and maximum oxygen consumption (VO2 max.); and to analyze the level of PA and its relationship with sex, place of residence, influence of physical education (PE) classes in PA, and body mass index (BMI) in adolescents.

Materials And Methods: 89 subjects from the province of Salamanca (Spain), aged 12 to 16 (14±1.

[Mortality and use of healthcare resources in elderly patients in Seville: Differences between institutionalised patients and those included in a home care program].

Objectives: Society is ageing, and as a consequence, the population with increased frailty and comorbidity is growing. The aim is to analyse the mortality and its potential factors, as well as the use of healthcare resources in elderly patients, and to study the differences between institutionalised patients and those included in a home care program.

Materials And Methods: An observational, longitudinal and prospective cohort study was conducted in Seville during 2016.

[Relation Between Stress During Pregnancy and Spontaneous Preterm Birth].

Background: Preterm birth occurs before 37 completed weeks, its causes are multifactorial and vary according to the gestational age, ethnicity and geographical context. Although several medical/social factors have been clearly identified, over 50% of cases are unknown or unclear; however, psychopathological components emerge as potentially important risk factors.

Objective: To determine the relationship between the presence of stress during pregnancy and spontaneous preterm birth.