Search results for "power-duration relationship"

showing 3 items of 3 documents

Comparison of inter-trial recovery times for the determination of critical power and W' in cycling

2017

Critical Power (CP) and W’ are often determined using multi-day testing protocols. To investigate this cumbersome testing method, the purpose of this study was to compare the differences between the conventional use of a 24-h inter-trial recovery time with those of 3 h and 30 min for the determination of CP and W’. Methods: 9 moderately trained cyclists performed an incremental test to exhaustion to establish the power output associated with the maximum oxygen uptake (p V O2max), and 3 protocols requiring time-to-exhaustion trials at a constant work-rate performed at 80%, 100% and 105% of p VO2max. Design: Protocol A utilised 24-h inter-trial recovery (CP24/W’24), protocol B utilised 3-h in…

validityTime FactorsTime Factorpower-duration relationshipPhysical Therapy Sports Therapy and RehabilitationAthletic Performance030204 cardiovascular system & hematology03 medical and health sciencesRecovery periodOxygen Consumption0302 clinical medicineAnimal scienceTesting protocolsHumansOrthopedics and Sports MedicinePower outputSimulationMathematicsexercise testingLimits of agreementVO2 max030229 sport sciencesQPIncremental testBicyclinganaerobic work capacityCritical intensityMuscle FatigueCritical powerExercise TestCyclingGVHuman
researchProduct

Exercise intolerance at high altitude (5050 m): critical power and W'.

2011

Abstract The relationship between work rate (WR) and its tolerable duration (tLIM) has not been investigated at high altitude (HA). At HA (5050 m) and at sea level (SL), six subjects therefore performed symptom-limited cycle-ergometry: an incremental test (IET) and three constant-WR tests (% of IET WRmax, HA and SL respectively: WR1 70 ± 8%, 74 ± 7%; WR2 86 ± 14%, 88 ± 10%; WR3 105 ± 13%, 104 ± 9%). The power asymptote (CP) and curvature constant (W′) of the hyperbolic WR–tLIM relationship were reduced at HA compared to SL (CP: 81 ± 21 vs. 123 ± 38 W; W′: 7.2 ± 2.9 vs. 13.1 ± 4.3 kJ). HA breathing reserve (estimated maximum voluntary ventilation minus end-exercise ventilation) was also comp…

AdultMalePulmonary and Respiratory MedicinePhysiologyOxygen pulsepower-duration relationshipPhysical exerciseExercise intoleranceAltitude SicknessSettore BIO/09 - FisiologiaAnimal scienceExercise toleranceOxygen pulsemedicineHumansMaximum voluntary ventilationHypoxiaMathematicsAltitudeGeneral NeuroscienceHypoxia Exercise tolerance Power–duration relationship Lactate Oxygen uptake Oxygen pulsehypoxia; exercise tolerance; power-duration relationship; lactate; oxygen uptake; oxygen pulseMiddle AgedEffects of high altitude on humansIncremental testOxygen uptakeCritical powerExercise TestPhysical EnduranceBreathingLactateFemalePower–duration relationshipmedicine.symptomPulmonary Ventilation
researchProduct

Relationship Between the Critical Power Test and a 20-min Functional Threshold Power Test in Cycling.

2021

To investigate the agreement between critical power (CP) and functional threshold power (FTP), 17 trained cyclists and triathletes (mean ± SD: age 31 ± 9 years, body mass 80 ± 10 kg, maximal aerobic power 350 ± 56 W, peak oxygen consumption 51 ± 10 mL⋅min–1⋅kg–1) performed a maximal incremental ramp test, a single-visit CP test and a 20-min time trial (TT) test in randomized order on three different days. CP was determined using a time-trial (TT) protocol of three durations (12, 7, and 3 min) interspersed by 30 min passive rest. FTP was calculated as 95% of 20-min mean power achieved during the TT. Differences between means were examined using magnitude-based inferences and a paired-samples…

lcsh:QP1-981PhysiologyLimits of agreementcycling performancepower-duration relationshiplcsh:Physiologyfatigue thresholdTime trialAnimal sciencePower testPhysiology (medical)Critical powerexercise tolerancefunctional threshold powerCyclingMathematicsOriginal ResearchFrontiers in physiology
researchProduct