Biology of Sport
eISSN: 2083-1862
ISSN: 0860-021X
Biology of Sport
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3/2022
vol. 39
 
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abstract:
Original paper

The effects of varying inertial loadings on power variables in the flywheel romanian deadlift exercise

Joey O. Brien
1
,
Declan Browne
1
,
Des Earls
1
,
Clare Lodge
1

1.
HealthCore, Department of Science and Health, Institute of Technology Carlow, Carlow R93 V960, Ireland
Biol Sport. 2022;39(3):499–503
Online publish date: 2021/07/03
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The aim of this study was to investigate the effect of four different inertial loads (0.025, 0.050, 0.075, and 0.100 kg· m²) on concentric (CON) power, eccentric (ECC) power, and ECC overload in the flywheel Romanian deadlift (RDL). Fourteen recreationally trained males (27.9 ± 6.4 years, 90 ± 10.7 kg, 180.7 ± 5.5 cm) volunteered for the study. They had a minimum of two years of resistance training experience, although none had experience in flywheel inertia training (FIT). All participants performed the flywheel RDL on a flywheel device (kBox 3, Exxentric, AB TM, Bromma, Sweden). Each set was performed using different inertial loads, those being 0.025, 0.050, 0.075, and 0.100 kg·m². For CON, ECC power, and ECC overload, there was a significant difference (p < 0.001) between inertial loadings. In conclusion, results highlight that lower inertial load leads to higher peak CON and ECC power values, precisely 0.025 kg· m². Regarding ECC overload, medium to higher loads (0.050, 0.075, and 0.100 kg·m²) will lead to higher values.
keywords:

Iso-inertial device, Eccentric overload, Inertia load, Power output

 
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