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High intensity interval training leads to greater improvements in acute heart rate recovery and anaerobic power as high volume low intensity training
University of Salzburg, Salzburg, Austria. (Nationellt Vintersportcentrum)ORCID iD: 0000-0002-6685-1540
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. The Swedish Sports Confederation, Stockholm, Sweden. (Sports Tech Research Centre)
2017 (English)In: Frontiers in Physiology, ISSN 1664-042X, E-ISSN 1664-042X, Vol. 8, 562Article in journal (Refereed) Published
Abstract [en]

The purpose of the current study was to explore if training regimes utilizing diverse training intensity distributions result in different responses on neuromuscular status, anaerobic capacity/power and acute heart rate recovery (HRR) in well-trained endurance athletes.

Methods: Thirty-six male (n = 33) and female (n = 3) runners, cyclists, triathletes and cross-country skiers [peak oxygen uptake: (VO2peak): 61.9 ± 8.0 mL·kg−1·min−1] were randomly assigned to one of three groups (blocked high intensity interval training HIIT; polarized training POL; high volume low intensity oriented control group CG/HVLIT applying no HIIT). A maximal anaerobic running/cycling test (MART/MACT) was performed prior to and following a 9-week training period.

Results: Only the HIIT group achieved improvements in peak power/velocity (+6.4%, P < 0.001) and peak lactate (P = 0.001) during the MART/MACT, while, unexpectedly, in none of the groups the performance at the established lactate concentrations (4, 6, 10 mmol·L−1) was changed (P > 0.05). Acute HRR was improved in HIIT (11.2%, P = 0.002) and POL (7.9%, P = 0.023) with no change in the HVLIT oriented control group.

Conclusion: Only a training regime that includes a significant amount of HIIT improves the neuromuscular status, anaerobic power and the acute HRR in well-trained endurance athletes. A training regime that followed more a low and moderate intensity oriented model (CG/HVLIT) had no effect on any performance or HRR outcomes.

Place, publisher, year, edition, pages
2017. Vol. 8, 562
Keyword [en]
lactate threshold, peak power, maximal anaerobic running test, mart, MACT, training intensity distribution
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-31311DOI: 10.3389/fphys.2017.00562ISI: 000406812200001PubMedID: 28824457Scopus ID: 2-s2.0-85026781665OAI: oai:DiVA.org:miun-31311DiVA: diva2:1128462
Available from: 2017-07-25 Created: 2017-07-25 Last updated: 2017-11-29Bibliographically approved

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