Physical Functional Performance
Conditions
Interventions
This is an acute study designed to characterize the training session using a randomized, single-blind, crossover design, and a chronic study aimed at assessing post-training adaptations using a random
Sponsors
Escola de Educação Física e Esporte de Ribeirão Preto, Universidade de São Paulo
Escola de Educação Física e Esporte de Ribeirão Preto, Universidade de São Paulo
Eligibility
Sex/Gender
Male
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Male handball athletes aged between 18 and 35 years
Exclusion criteria
Exclusion criteria: Failure to complete two or more sessions of the chronic protocol; failure to complete one session of the acute protocol
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Expected outcome 1: An additional benefit of IRH is expected in adaptations related to performance in repeated sprints, with 5% improvement in mean sprint time;Expected outcome 2: An additional benefit of IRH is expected in adaptations related VO2max measured in intermittent incremental test, with 30% increase for IRH group and 14% increase for NOR group.;Outcome 1: Both groups improved their average sprint times in the repeated sprints skill test, with an average improvement of 3% and no difference between groups;Outcome 2: Both groups improved their VO2max in the intermittent incremental test, with an average improvement of 18% with no difference between the groups | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected outcome 3: Similar adaptations are expected between the NOR and IRH groups in terms of jump height and maximum sprint speed;Expected outcome 4: Similar adaptations are expected between the NOR and IRH groups with regard to hematological variables in the chronic study;Expected outcome 5: A 50% increase is expected for erythropoietin 4 hours after intervention for the IRH condition in the acute study.;Expected outcome 6: Maintenance of training quality, blood lactate levels and maximum heart rate is expected in the acute study after the addition of HIR.;Outcome 3: Both groups improved their jump height, with an average improvement of 3% but no difference between the groups. There was no improvement in maximum sprint speed;Outcome 4: No hematological adaptations were observed after the chronic study.;Outcome 5: Erythropoeitin levels did not increase in either group.;Outcome 6: The maximum heart rate was similar between the NOR and HIR conditions (187bpm for small-sided games and 179 bpm for sprint training), as was the lactate concentration (15.2 mM for sprint training and 9.5 mM for small-sided games). The total distance covered did not change during sprint training, but the maximum sprint power decreased by 2%. | — |
Countries
Brazil
Contacts
Public ContactMarcelo Papoti
Escola de Educação Física e Esporte de Ribeirão Preto da Universidade de São Paulo
Outcome results
None listed