The Maximum Flywheel Load: A Novel Index to Monitor Loading Intensity of Flywheel Devices

Overview

Journal Sensors (Basel)

Publisher MDPI

Specialty Biotechnology

Date 2021 Dec 10

PMID 34884128

Citations 4

Authors

Alejandro Munoz-Lopez

Pablo Floria

Borja Sanudo

Javier Pecci

Jorge Carmona Perez

Marco Pozzo

Affiliations

Soon will be listed here.

Abstract

Background: The main aim of this study was (1) to find an index to monitor the loading intensity of flywheel resistance training, and (2) to study the differences in the relative intensity workload spectrum between the FW-load and ISO-load.

Methods: twenty-one males participated in the study. Subjects executed an incremental loading test in the squat exercise using a Smith machine (ISO-load) or a flywheel device (FW-load). We studied different association models between speed, power, acceleration, and force, and each moment of inertia was used to find an index for FW-load. In addition, we tested the differences between relative workloads among load conditions using a two-way repeated-measures test.

Results: the highest r2 was observed using a logarithmic fitting model between the mean angular acceleration and moment of inertia. The intersection with the x-axis resulted in an index (maximum flywheel load, MFL) that represents a theoretical individual maximal load that can be used. The ISO-load showed greater speed, acceleration, and power outcomes at any relative workload (%MFL vs. % maximum repetition). However, from 45% of the relative workload, FW-load showed higher vertical forces.

Conclusions: MFL can be easily computed using a logarithmic model between the mean angular acceleration and moment of inertia to characterize the maximum theoretical loading intensity in the flywheel squat.

Citing Articles

Design and implementation of load intensity monitoring platform supported by big data technology in stage training for women's sitting volleyball.

Liang Z, Liang C Sci Rep. 2023; 13(1):22382.

PMID: 38104202 PMC: 10725414. DOI: 10.1038/s41598-023-50057-9.

Eccentric overload differences between loads and training variables on flywheel training.

Munoz-Lopez A, Nakamura F, Beato M Biol Sport. 2023; 40(4):1151-1158.

PMID: 37867740 PMC: 10588593. DOI: 10.5114/biolsport.2023.122483.

Validity and Reliability of Inertial Measurement System for Linear Movement Velocity in Flywheel Squat Exercise.

Maroto-Izquierdo S, Nosaka K, Alarcon-Gomez J, Martin-Rivera F Sensors (Basel). 2023; 23(4).

PMID: 36850788 PMC: 9958668. DOI: 10.3390/s23042193.

The Effect of Flywheel Inertia on Peak Power and Its Inter-session Reliability During Two Unilateral Hamstring Exercises: Leg Curl and Hip Extension.

de Keijzer K, McErlain-Naylor S, Beato M Front Sports Act Living. 2022; 4:898649.

PMID: 35755611 PMC: 9226424. DOI: 10.3389/fspor.2022.898649.

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