title: Feeling of Pleasure to High-Intensity Interval Exercise Is Dependent of the Number of Work Bouts and Physical Activity Status.
abstract: OBJECTIVE
  To examine the affective responses during a single bout of a low-volume HIIE in active and insufficiently active men.
  
  
  METHODS
  Fifty-eight men (aged 25.3 ± 3.6 years) volunteered to participate in this study: i) active (n = 29) and ii) insufficiently active (n = 29). Each subject undertook i) initial screening and physical evaluation, ii) maximal exercise test, and iii) a single bout of a low-volume HIIE. The HIIE protocol consisted of 10 x 60s work bouts at 90% of maximal treadmill velocity (MTV) interspersed with 60s of active recovery at 30% of MTV. Affective responses (Feeling Scale, -5/+5), rating of perceived exertion (Borg's RPE, 6-20), and heart rate (HR) were recorded during the last 10s of each work bout. A two-factor mixed-model repeated measures ANOVA, independent-samples t test, and chi-squared test were used to data analysis.
  
  
  RESULTS
  There were similar positive affective responses to the first three work bouts between insufficiently active and active men (p > 0.05). However, insufficiently active group displayed lower affective responses over time (work bout 4 to 10) than the active group (p < 0.01). Also, the insufficiently active group displayed lower values of mean, lowest, and highest affective response, as well as lower values of affective response at the highest RPE than the active group (p < 0.001). There were no differences in the RPE and HR between the groups (p > 0.05).
  
  
  CONCLUSIONS
  Insufficiently active and active men report feelings of pleasure to few work bouts (i.e., 3-4) during low-volume HIIE, while the affective responses become more unpleasant over time for insufficiently active subjects. Investigations on the effects of low-volume HIIE protocols including a fewer number of work bouts on health status and fitness of less active subjects would be interesting, especially in the first training weeks.
authors.affiliation: Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Danniel Thiago
authors.initials: DT
authors.lastname: Frazão
authors.affiliation: Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Luiz Fernando
authors.initials: LF
authors.lastname: de Farias Junior
authors.affiliation: Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Teresa Cristina Batista
authors.initials: TC
authors.lastname: Dantas
authors.affiliation: Department of Physical Education, Federal University of Vale do São Francisco, Petrolina, PE, Brazil.
authors.forename: Kleverton
authors.initials: K
authors.lastname: Krinski
authors.affiliation: Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Hassan Mohamed
authors.initials: HM
authors.lastname: Elsangedy
authors.affiliation: Graduation Program on Physical Education, Catholic University of Brasilia, Brasilia, DF, Brazil.
authors.forename: Jonato
authors.initials: J
authors.lastname: Prestes
authors.affiliation: School of Psychology and Speech Pathology, Curtin University, Perth, Australia.
authors.forename: Sarah J
authors.initials: SJ
authors.lastname: Hardcastle
authors.affiliation: Department of Physical Education, Federal University of Rio Grande do Norte, Natal, RN, Brazil.|Postgraduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
authors.forename: Eduardo Caldas
authors.initials: EC
authors.lastname: Costa
mesh_terms: D000328:Adult; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D009043:Motor Activity / Q000502:physiology*; D057181:Pleasure / Q000502:physiology*