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Cadence Modulation to Improve Well-Being, Kinematics and Aerobic Performance in Cyclists

23. december 2019 opdateret af: University of Wisconsin, Madison
This study will utilize a combination of cardiovascular analysis, 3D motion capture, and a software package, Metrifit, to monitor measures of well-being to comprehensively evaluate both the musculoskeletal and physiological responses following a HIIT training intervention at EOC as a means of improving performance and potentially reducing injury risk factors. This holistic approach of physiological and biomechanical factors is unprecedented. This is the first interventional study to determine the effect of high intensity training at EOC on cardiovascular performance, kinematics and well-being which may minimize risk of injury factors.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

In the first session, each individual will be asked to fill out a questionnaire to regarding cycling experience, prior bike fits (with data sheets when available), and injury history. Maximal aerobic capacity (VO2max) will be determined. During the test, subjects will be asked rate exertion. Before testing, the system will be calibrated with known oxygen and carbon dioxide concentrations. During the test, subjects will be asked to breathe normally through a low dead space bidirectional turbine. Inspired and expired gases will be analyzed for concentrations of O2 and CO2, to determine alveolar gas exchange. Total ventilation (VE), respiratory rate, oxygen consumption (VO2), carbon dioxide (VCO2) will be measured, and respiratory exchange ratio (RER; VCO2/VO2) will be calculated continuously during the test and expressed as a 30-second rolling average.

Participants will return 48 hours later, at which time EOC will be determined after a moderate intensity prolonged cycling exercise (PCE) at seven different cadences. Cadences from 50rpm to 110rpm will be randomly generated and introduced every 3 minutes, followed by a 3 minute cool down at FCC at 40% PP (Figure Subjects will then be pair matched by gender and randomized into control (FCC) or EOC modulation groups.

48 hours following EOC testing, subject will return for a second progressive maximal cycling test performed at FCC or EOC based on group assignment.

Subjects will then participate in a 6 week high intensity training (HIIT) indoor cycling program at their prescribed cadence (FCC or EOC), using cadence meters. Training will consist of three non-consecutive days each week for 60 min, and alternate between two HIIT workouts. Resistance will be increased to meet the HIIT requirement, while cadence will remain at FCC or EOC. Subjects will be asked to warm-up at a light (3/10) workload for 10 minutes, followed by HIIT consisting of 4 minutes at an intensity of 8/10 on the modified Borg, and 90 seconds recovery (2/10). This will be repeated 8 times, followed by 10 minutes of cool down. The alternating HIIT workout will include a 10 minute warm up, followed by 12 intervals lasting 2 minutes at an RPE of 9/10 and 3 minutes of recovery. The session will conclude with a 10 minute cool down.

Within one week of completing their training program, subjects will return for their fourth and final study visit, at which time a VO2max test and kinematic data collection will be repeated at FCC or EOC.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

25

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Wisconsin
      • Madison, Wisconsin, Forenede Stater, 53705
        • University of Wisconsin

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 89 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. An experienced cyclist will be defined as one with at least 5 years of cycling experience and 5000 miles of training on a road bike with a clipless pedal system.
  2. Able to tolerate strenuous, maximal exercise and comply with a 6 week training protocol
  3. Have access to an indoor trainer or spin bike with a cadence sensor in order to train 3 times per week for 60 minutes

Exclusion Criteria:

  1. Taking medication which could impact cardiovascular function or performance (stimulants, beta-blockers, e.g.)
  2. Significant cardiac or pulmonary disease (congenital cardiac disease, uncontrolled hypertension, uncontrolled asthma, e.g.)
  3. Musculoskeletal injuries that preclude a maximal cycling effort and participation in training program

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: Cycling Cadence Modulation
3 initial visits to collect baseline information; 6-week HIIT indoor cycling program at the individual prescribed cadence; final study visit for post-intervention measures.
Adfærdsmæssigt: Cycling Cadence Modulation
6-week high intensity training (HIIT) indoor cycling program, described later, at their prescribed cadence (FCC or EOC), using cadence meters.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Time to exhaustion T(max)
Tidsramme: Baseline
time to reach exhaustion
Baseline
Ventilatory threshold (VT)
Tidsramme: Baseline
Baseline
Maximal cardiac output
Tidsramme: Baseline
Baseline
Maximal stroke volume
Tidsramme: Baseline
Baseline
decreased trunk lean
Tidsramme: Baseline
decrease in degree of lean in truck
Baseline
decreased ankle dorsiflexion
Tidsramme: Baseline
decrease in amount of ankle dorsiflexion
Baseline
decreased knee splay
Tidsramme: Baseline
decreased degree of knee splay
Baseline

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Improved VO2 max
Tidsramme: 6 weeks
Increased maximum O2 volume
6 weeks
Increased O2 consumption at VT
Tidsramme: 6 weeks
Improved oxygen consumption at ventilatory threshold
6 weeks
Time to VT
Tidsramme: 6 weeks
Improved time to reach ventilatory threshold
6 weeks
Time to T(max)
Tidsramme: 6 weeks
Improved time to reach exhaustion
6 weeks
decreased trunk lean
Tidsramme: 6 weeks
decrease in degree of lean in truck
6 weeks
decreased ankle dorsiflexion
Tidsramme: 6 weeks
decrease in amount of ankle dorsiflexion
6 weeks
decreased knee splay
Tidsramme: 6 weeks
decreased degree of knee splay
6 weeks
change in overall soreness and fatigue
Tidsramme: 6 weeks
decrease in reported soreness and fatigue as measured and reported via Metrifit software
6 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Wisconsin, Madison

Efterforskere

  • Ledende efterforsker: Andrew M Watson, MD, University of Wisconsin, Madison

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

26. juni 2017

Primær færdiggørelse (Faktiske)

2. april 2019

Studieafslutning (Faktiske)

2. april 2019

Datoer for studieregistrering

Først indsendt

22. november 2017

Først indsendt, der opfyldte QC-kriterier

22. marts 2018

Først opslået (Faktiske)

29. marts 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

26. december 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. december 2019

Sidst verificeret

1. april 2019

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • 2017-0131
  • A536110 (Anden identifikator: UW Madison)
  • SMPH\ORTHOPEDIC&REHAB\ORTHO (Anden identifikator: UW Madison)

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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