The Salzburg 10/7 HIIT shock cycle study: the effects of a 7-day high-intensity interval training shock microcycle with or without additional low-intensity training on endurance performance, well-being, stress and recovery in endurance trained athletes-study protocol of a randomized controlled trial

Abstract

AbstractBackgroundPerforming multiple high-intensity interval training (HIIT) sessions in a compressed period of time (approximately 7–14 days) is called a HIIT shock microcycle (SM) and promises a rapid increase in endurance performance. However, the efficacy of HIIT-SM, as well as knowledge about optimal training volumes during a SM in the endurance-trained population have not been adequately investigated. This study aims to examine the effects of two different types of HIIT-SM (with or without additional low-intensity training (LIT)) compared to a control group (CG) on key endurance performance variables. Moreover, participants are closely monitored for stress, fatigue, recovery, and sleep before, during and after the intervention using innovative biomarkers, questionnaires, and wearable devices.MethodsThis is a study protocol of a randomized controlled trial that includes the results of a pilot participant. Thirty-six endurance trained athletes will be recruited and randomly assigned to either a HIIT-SM (HSM) group, HIIT-SM with additional LIT (HSM + LIT) group or a CG. All participants will be monitored before (9 days), during (7 days), and after (14 days) a 7-day intervention, for a total of 30 days. Participants in both intervention groups will complete 10 HIIT sessions over 7 consecutive days, with an additional 30 min of LIT in the HSM + LIT group. HIIT sessions consist of aerobic HIIT, i.e., 5 × 4 min at 90–95% of maximal heart rate interspersed by recovery periods of 2.5 min. To determine the effects of the intervention, physiological exercise testing, and a 5 km time trial will be conducted before and after the intervention.ResultsThe feasibility study indicates good adherence and performance improvement of the pilot participant. Load monitoring tools, i.e., biomarkers and questionnaires showed increased values during the intervention period, indicating sensitive variables.ConclusionThis study will be the first to examine the effects of different total training volumes of HIIT-SM, especially the combination of LIT and HIIT in the HSM + LIT group. In addition, different assessments to monitor the athletes' load during such an exhaustive training period will allow the identification of load monitoring tools such as innovative biomarkers, questionnaires, and wearable technology.Trial Registration: clinicaltrials.gov, NCT05067426. Registered 05 October 2021—Retrospectively registered,https://clinicaltrials.gov/ct2/show/NCT05067426.Protocol VersionIssue date: 1 Dec 2021. Original protocol. Authors: TLS, NH.

Autoren

Thomas Leonhard Stöggl
Julia C Blumkaitis
Tilmann Strepp
Mahdi Sareban
Perikles Simon
Elmo WI Neuberger
Thomas Finkenzeller
Natalia Nunes
Lorenz Aglas
Nils Haller

DOI

10.1186/s13102-022-00456-8

eISSN

2052-1847

Ausgabe der Veröffentlichung

1

Zeitschrift

BMC Sports Science, Medicine and Rehabilitation

Sprache

en

Artikelnummer

84

Online publication date

2022

Datum der Veröffentlichung

2022

Status

Published

Herausgeber

Springer Science and Business Media LLC

Herausgeber URL

http://dx.doi.org/10.1186/s13102-022-00456-8

Datum der Datenerfassung

2023

Titel

The Salzburg 10/7 HIIT shock cycle study: the effects of a 7-day high-intensity interval training shock microcycle with or without additional low-intensity training on endurance performance, well-being, stress and recovery in endurance trained athletes—study protocol of a randomized controlled trial

Ausgabe der Zeitschrift

14

Datenquelle: Crossref

Abstract

<h4>Background</h4>Performing multiple high-intensity interval training (HIIT) sessions in a compressed period of time (approximately 7-14 days) is called a HIIT shock microcycle (SM) and promises a rapid increase in endurance performance. However, the efficacy of HIIT-SM, as well as knowledge about optimal training volumes during a SM in the endurance-trained population have not been adequately investigated. This study aims to examine the effects of two different types of HIIT-SM (with or without additional low-intensity training (LIT)) compared to a control group (CG) on key endurance performance variables. Moreover, participants are closely monitored for stress, fatigue, recovery, and sleep before, during and after the intervention using innovative biomarkers, questionnaires, and wearable devices.<h4>Methods</h4>This is a study protocol of a randomized controlled trial that includes the results of a pilot participant. Thirty-six endurance trained athletes will be recruited and randomly assigned to either a HIIT-SM (HSM) group, HIIT-SM with additional LIT (HSM + LIT) group or a CG. All participants will be monitored before (9 days), during (7 days), and after (14 days) a 7-day intervention, for a total of 30 days. Participants in both intervention groups will complete 10 HIIT sessions over 7 consecutive days, with an additional 30 min of LIT in the HSM + LIT group. HIIT sessions consist of aerobic HIIT, i.e., 5 × 4 min at 90-95% of maximal heart rate interspersed by recovery periods of 2.5 min. To determine the effects of the intervention, physiological exercise testing, and a 5 km time trial will be conducted before and after the intervention.<h4>Results</h4>The feasibility study indicates good adherence and performance improvement of the pilot participant. Load monitoring tools, i.e., biomarkers and questionnaires showed increased values during the intervention period, indicating sensitive variables.<h4>Conclusion</h4>This study will be the first to examine the effects of different total training volumes of HIIT-SM, especially the combination of LIT and HIIT in the HSM + LIT group. In addition, different assessments to monitor the athletes' load during such an exhaustive training period will allow the identification of load monitoring tools such as innovative biomarkers, questionnaires, and wearable technology.<h4>Trial registration</h4>clinicaltrials.gov, NCT05067426. Registered 05 October 2021-Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT05067426 . Protocol Version Issue date: 1 Dec 2021. Original protocol. Authors: TLS, NH.

Addresses

Department of Sport and Exercise Science, University of Salzburg, Salzburg, Austria.

Autoren

Thomas Leonhard Stöggl
Julia C Blumkaitis
Tilmann Strepp
Mahdi Sareban
Perikles Simon
Elmo WI Neuberger
Thomas Finkenzeller
Natalia Nunes
Lorenz Aglas
Nils Haller

DOI

10.1186/s13102-022-00456-8

eISSN

2052-1847

Externe Identifier

PubMed Identifier: 35526065
PubMed Central ID: PMC9077880

Open access

true

ISSN

2052-1847

Ausgabe der Veröffentlichung

1

Zeitschrift

BMC sports science, medicine & rehabilitation

Sprache

eng

Medium

Electronic

Online publication date

2022

Open access status

Open Access

Paginierung

84

Datum der Veröffentlichung

2022

Status

Published

Publisher licence

CC BY

Datum der Datenerfassung

2022

Titel

The Salzburg 10/7 HIIT shock cycle study: the effects of a 7-day high-intensity interval training shock microcycle with or without additional low-intensity training on endurance performance, well-being, stress and recovery in endurance trained athletes-study protocol of a randomized controlled trial.

Sub types

research-article
Journal Article

Ausgabe der Zeitschrift

14

Files

https://bmcsportsscimedrehabil.biomedcentral.com/track/pdf/10.1186/s13102-022-00456-8 https://europepmc.org/articles/PMC9077880?pdf=render

Datenquelle: Europe PubMed Central

Abstract

BACKGROUND: Performing multiple high-intensity interval training (HIIT) sessions in a compressed period of time (approximately 7-14 days) is called a HIIT shock microcycle (SM) and promises a rapid increase in endurance performance. However, the efficacy of HIIT-SM, as well as knowledge about optimal training volumes during a SM in the endurance-trained population have not been adequately investigated. This study aims to examine the effects of two different types of HIIT-SM (with or without additional low-intensity training (LIT)) compared to a control group (CG) on key endurance performance variables. Moreover, participants are closely monitored for stress, fatigue, recovery, and sleep before, during and after the intervention using innovative biomarkers, questionnaires, and wearable devices. METHODS: This is a study protocol of a randomized controlled trial that includes the results of a pilot participant. Thirty-six endurance trained athletes will be recruited and randomly assigned to either a HIIT-SM (HSM) group, HIIT-SM with additional LIT (HSM + LIT) group or a CG. All participants will be monitored before (9 days), during (7 days), and after (14 days) a 7-day intervention, for a total of 30 days. Participants in both intervention groups will complete 10 HIIT sessions over 7 consecutive days, with an additional 30 min of LIT in the HSM + LIT group. HIIT sessions consist of aerobic HIIT, i.e., 5 × 4 min at 90-95% of maximal heart rate interspersed by recovery periods of 2.5 min. To determine the effects of the intervention, physiological exercise testing, and a 5 km time trial will be conducted before and after the intervention. RESULTS: The feasibility study indicates good adherence and performance improvement of the pilot participant. Load monitoring tools, i.e., biomarkers and questionnaires showed increased values during the intervention period, indicating sensitive variables. CONCLUSION: This study will be the first to examine the effects of different total training volumes of HIIT-SM, especially the combination of LIT and HIIT in the HSM + LIT group. In addition, different assessments to monitor the athletes' load during such an exhaustive training period will allow the identification of load monitoring tools such as innovative biomarkers, questionnaires, and wearable technology. TRIAL REGISTRATION: clinicaltrials.gov, NCT05067426. Registered 05 October 2021-Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT05067426 . Protocol Version Issue date: 1 Dec 2021. Original protocol. Authors: TLS, NH.

Date of acceptance

2022

Autoren

Thomas Leonhard Stöggl
Julia C Blumkaitis
Tilmann Strepp
Mahdi Sareban
Perikles Simon
Elmo WI Neuberger
Thomas Finkenzeller
Natalia Nunes
Lorenz Aglas
Nils Haller

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/35526065

DOI

10.1186/s13102-022-00456-8

Externe Identifier

PubMed Central ID: PMC9077880

ISSN

2052-1847

Ausgabe der Veröffentlichung

1

Zeitschrift

BMC Sports Sci Med Rehabil

Schlüsselwörter

Block training
HIIT
HIT
Interval exercise
LIT
Load monitoring

Sprache

eng

Country

England

Paginierung

84

PII

10.1186/s13102-022-00456-8

Datum der Veröffentlichung

2022

Status

Published online

Titel

The Salzburg 10/7 HIIT shock cycle study: the effects of a 7-day high-intensity interval training shock microcycle with or without additional low-intensity training on endurance performance, well-being, stress and recovery in endurance trained athletes-study protocol of a randomized controlled trial.

Sub types

Journal Article

Ausgabe der Zeitschrift

14

Datenquelle: PubMed

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