title: [Cardiovascular recovery during intermittent exercise in highly-adherent partic pants with hypertension and type 2 diabetes mellitus].
abstract: BACKGROUND
  Despite the evidence supporting metabolic benefits of high intensity interval exercise (HIIT), there is little information about the cardiovascular response to this type of exercise in patients with type 2 diabetes (T2D) and hypertension (HTA).
  
  
  OBJECTIVE
  To analyze the changes in heart rate at rest, at the onset and at the end of each interval of training, after twelve weeks of a HIIT program in T2D and HTA patients.
  
  
  METHODS
  Twenty-three participants with T2D and HTA (20 women) participated in a controlled HIIT program. Fourteen participants attended 90% of more session of exercise and were considered as adherent. Adherent and non-adherent participants had similar body mass index (BMI), and blood pressure. A 1x2x10 (work: rest-time: intervals) HIIT exercise protocol was used both as a test and as training method during twelve weeks. The initial and finishing heart rate (HR) of each of the ten intervals before and after the intervention were measured.
  
  
  RESULTS
  After twelve weeks of HIIT intervention, adherent participants had a significant reduction in the heart rate at the onset of exercise, and during intervals 4, 5, 8 and 10. A reduction in the final heart rate was observed during intervals 8 and 10. In the same participants the greatest magnitude of reduction, at the onset or end of exercise was approximately 10 beats/min. No significant changes in BMI, resting heart rate and blood pressure were observed.
  
  
  CONCLUSIONS
  A HIIT program reduces the cardiovascular effort to a given work-load and improves cardiovascular recovery after exercise.
authors.affiliation: Hospital Público de Los Lagos, Osorno, Chile.
authors.forename: Johnattan
authors.initials: J
authors.lastname: Cano-Montoya
authors.affiliation: Departamento de Ciencias de la Actividad Física, Universidad de Los Lagos, Osorno, Chile, cristian.alvarez@ulagos.cl.
authors.forename: Cristian
authors.initials: C
authors.lastname: Álvarez
authors.affiliation: Departamento de Educación Física, Facultad de Educación, Ciencias Sociales y Humanidades, Universidad de la Frontera, Temuco, Chile.
authors.forename: Cristian
authors.initials: C
authors.lastname: Martínez
authors.affiliation: Hospital Público de Los Lagos, Osorno, Chile.
authors.forename: Andrés
authors.initials: A
authors.lastname: Salas
authors.affiliation: Centro de Salud Familiar Tomás Rojas, Los Lagos, Chile.
authors.forename: Farid
authors.initials: F
authors.lastname: Sade
authors.affiliation: Departamento de Ciencias de la Actividad Física, Universidad de Los Lagos, Osorno, Chile, cristian.alvarez@ulagos.cl.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Ramírez-Campillo
mesh_terms: D000368:Aged; D001794:Blood Pressure / Q000502:physiology; D003924:Diabetes Mellitus, Type 2 / Q000503:physiopathology*; D015444:Exercise / Q000502:physiology*; D017079:Exercise Tolerance / Q000502:physiology; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D020127:Recovery of Function / Q000502:physiology*; D013997:Time Factors