Cadence Modulation to Improve Well-Being, Kinematics and Aerobic Performance in Cyclists
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
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.
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
-
-
Wisconsin
-
Madison, Wisconsin, États-Unis, 53705
- University of Wisconsin
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- 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.
- Able to tolerate strenuous, maximal exercise and comply with a 6 week training protocol
- 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:
- Taking medication which could impact cardiovascular function or performance (stimulants, beta-blockers, e.g.)
- Significant cardiac or pulmonary disease (congenital cardiac disease, uncontrolled hypertension, uncontrolled asthma, e.g.)
- Musculoskeletal injuries that preclude a maximal cycling effort and participation in training program
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Autre
- Répartition: N / A
- Modèle interventionnel: Affectation à un seul groupe
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Autre: 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.
|
6-week high intensity training (HIIT) indoor cycling program, described later, at their prescribed cadence (FCC or EOC), using cadence meters.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Time to exhaustion T(max)
Délai: Baseline
|
time to reach exhaustion
|
Baseline
|
|
Ventilatory threshold (VT)
Délai: Baseline
|
Baseline
|
|
|
Maximal cardiac output
Délai: Baseline
|
Baseline
|
|
|
Maximal stroke volume
Délai: Baseline
|
Baseline
|
|
|
decreased trunk lean
Délai: Baseline
|
decrease in degree of lean in truck
|
Baseline
|
|
decreased ankle dorsiflexion
Délai: Baseline
|
decrease in amount of ankle dorsiflexion
|
Baseline
|
|
decreased knee splay
Délai: Baseline
|
decreased degree of knee splay
|
Baseline
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Improved VO2 max
Délai: 6 weeks
|
Increased maximum O2 volume
|
6 weeks
|
|
Increased O2 consumption at VT
Délai: 6 weeks
|
Improved oxygen consumption at ventilatory threshold
|
6 weeks
|
|
Time to VT
Délai: 6 weeks
|
Improved time to reach ventilatory threshold
|
6 weeks
|
|
Time to T(max)
Délai: 6 weeks
|
Improved time to reach exhaustion
|
6 weeks
|
|
decreased trunk lean
Délai: 6 weeks
|
decrease in degree of lean in truck
|
6 weeks
|
|
decreased ankle dorsiflexion
Délai: 6 weeks
|
decrease in amount of ankle dorsiflexion
|
6 weeks
|
|
decreased knee splay
Délai: 6 weeks
|
decreased degree of knee splay
|
6 weeks
|
|
change in overall soreness and fatigue
Délai: 6 weeks
|
decrease in reported soreness and fatigue as measured and reported via Metrifit software
|
6 weeks
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Andrew M Watson, MD, University of Wisconsin, Madison
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Autres numéros d'identification d'étude
- 2017-0131
- A536110 (Autre identifiant: UW Madison)
- SMPH\ORTHOPEDIC&REHAB\ORTHO (Autre identifiant: UW Madison)
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .