PURPOSE: To validate the new drive indoor trainer Hammer designed by Cycleops®. METHODS: A total of 11 cyclists performed 44 randomized and counterbalanced graded exercise tests (100-500 W) at 70-, 85-, and 100-rpm cadences in seated and standing positions on 3 different Hammer units, while a scientific SRM system continuously recorded cadence and power output data. RESULTS: No significant differences were detected between the 3 Hammer devices and the SRM for any workload, cadence, or pedaling condition (P value between 1.00 and .350), except for some minor differences (P = .03 and .04) found in the Hammer 1 at low workloads and for Hammer 2 and 3 at high workloads, all in seated position. Strong intraclass correlation coefficients were found between the power output values recorded by the Hammers and the SRM (≥.996; P = .001), independently from the cadence condition and seated position. Bland-Altman analysis revealed low bias (-5.5 to 3.8) and low SD of bias (2.5-5.3) for all testing conditions, except marginal values found for the Hammer 1 at high cadences and seated position (9.6 [6.6]). High absolute reliability values were detected for the 3 Hammers (150-500 W; coefficient of variation <1.2%; SEM <2.1). CONCLUSIONS: This new Cycleops trainer is a valid and reliable device to drive and measure power output in cyclists, providing an alternative to larger and more expensive laboratory ergometers and allowing cyclists to use their own bicycles.
RCT Entities:
PURPOSE: To validate the new drive indoor trainer Hammer designed by Cycleops®. METHODS: A total of 11 cyclists performed 44 randomized and counterbalanced graded exercise tests (100-500 W) at 70-, 85-, and 100-rpm cadences in seated and standing positions on 3 different Hammer units, while a scientific SRM system continuously recorded cadence and power output data. RESULTS: No significant differences were detected between the 3 Hammer devices and the SRM for any workload, cadence, or pedaling condition (P value between 1.00 and .350), except for some minor differences (P = .03 and .04) found in the Hammer 1 at low workloads and for Hammer 2 and 3 at high workloads, all in seated position. Strong intraclass correlation coefficients were found between the power output values recorded by the Hammers and the SRM (≥.996; P = .001), independently from the cadence condition and seated position. Bland-Altman analysis revealed low bias (-5.5 to 3.8) and low SD of bias (2.5-5.3) for all testing conditions, except marginal values found for the Hammer 1 at high cadences and seated position (9.6 [6.6]). High absolute reliability values were detected for the 3 Hammers (150-500 W; coefficient of variation <1.2%; SEM <2.1). CONCLUSIONS: This new Cycleops trainer is a valid and reliable device to drive and measure power output in cyclists, providing an alternative to larger and more expensive laboratory ergometers and allowing cyclists to use their own bicycles.
Keywords:
calibration; cycling; ergometry; power output; powermeter
Authors: Almudena Montalvo-Pérez; Lidia B Alejo; Pedro L Valenzuela; Jaime Gil-Cabrera; Eduardo Talavera; Alejandro Luia; David Barranco-Gil Journal: Front Physiol Date: 2021-02-25 Impact factor: 4.566
Authors: Lidia B Alejo; Almudena Montalvo-Pérez; Pedro L Valenzuela; Carlos Revuelta; Laureano M Ozcoidi; Víctor de la Calle; Manuel Mateo-March; Alejandro Lucia; Alfredo Santalla; David Barranco-Gil Journal: Front Physiol Date: 2022-08-05 Impact factor: 4.755
Authors: Pedro L Valenzuela; Lidia B Alejo; Almudena Montalvo-Pérez; Jaime Gil-Cabrera; Eduardo Talavera; Alejandro Lucia; David Barranco-Gil Journal: Front Physiol Date: 2021-06-09 Impact factor: 4.566