ISSN: 1899-1955
Human Movement
Current issue Articles in Press Archive Special Issues About the journal Editorial board Instructions for Reviewers Journal's Reviewers Ethical standards and procedures Abstracting and indexing Contact Instructions for authors
SCImago Journal & Country Rank

 
4/2020
vol. 21
 
Share:
Share:
more
 
 
abstract:
Original paper

Within- and between-session reliability of a pedal force system for power output and pedal force effectiveness measurements

Rodrigo Bini
1, 2
,
Patria Hume
2

1.
La Trobe Rural Health School, La Trobe University, Bendigo, Australia
2.
Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand
Human Movement 2020 vol. 21 (4), 69–78
Online publish date: 2020/04/18
View full text
Get citation
ENW
EndNote
BIB
JabRef, Mendeley
RIS
Papers, Reference Manager, RefWorks, Zotero
AMA
APA
Chicago
Harvard
MLA
Vancouver
 
Purpose
The study assessed within- and between-session reliability of power output (PO) and pedal force effectiveness and compared PO from the pedals with the Lode Excalibur cycle ergometer.

Methods
Seventeen male cyclists performed 10 trials at 3 levels of PO (1.5, 2.5, and 3.5 W/kg) and 3 cadences (60, 80, and 100 rpm) in 2 sessions. Instrumented pedals and a portable motion tracking system were synchronized to collect pedal forces and 3D full body motion, respectively. PO and the index of effectiveness (IE) were compared within and between sessions for the pedals while PO was compared with the Lode Excalibur.

Results
Good agreement was observed for PO within sessions whilst right and left pedal IEs were moderate. Betweensession reliability ranged from poor to good for PO measured from the pedals, and reliability for IE ranged from poor to good. Significant differences in PO were observed between the pedals and the Lode Excalibur ergometer (17–50 W).

Conclusions
The customized system to measure pedal forces was reliable within a given session for measuring IE and PO but variability in data increased in the second session, potentially because of the repositioning of the motion tracking sensors. Validity in measuring PO from the pedals without the use of the crank encoder is questionable.

keywords:

force effectiveness, Xsens, motion tracking, cycling

Quick links
© 2020 Termedia Sp. z o.o. All rights reserved.
Developed by Bentus.
PayU - płatności internetowe