Comparison of vertical ground reaction force parameters during overground and treadmill running.

Kluitenberg, B. (Bas) (2011) Comparison of vertical ground reaction force parameters during overground and treadmill running. thesis, Human Movement Sciences.

Text KluitenbergB.pdf Restricted to Registered users only Download (17MB)

Abstract

A major drawback in ground-reaction force (GRF) measurements during running is the difficulty to obtain GRF data of sufficient running cycles in a stable running pattern with a force platform. An instrumented force measuring treadmill can overcome these shortcomings. Therefore, the aim of the current study was to determine the validity of an instrumented force measuring treadmill with a force platform. Vertical GRFs of experienced runners (12 male, 12 female) were obtained during overground (OG) and treadmill {TM) running at preferred, slow and fast selfselected running speeds. TM speed was matched to the OG self-selected running speed. For each runner, mean vertical GRF parameters (Fz1, Fz2, LR-max, ALR, tFz1, tFz2 and CT) of the right leg were calculated based on five successful OG steps and 30 seconds of TM running data. For the runners who showed a consistent HS landing (N=14, N=15 and N=12 for respectively slow, preferred and fast running speed), the parameters Fz2, tFz 1, tFz2 and CT, measured with both devices, showed excellent agreement (intraclass correlations {ICCs) between 0. 76 and 0.96, ratio limits of agreement (RLOA) between 5.1% and 15.5%). Impact peak, Fz1 showed modest agreement {ICCs between 0.71 and 0.76, RLOA between 19.9% and 29.9%). Maximal and average loading-rate showed poor agreement with RLOA between 32.2% and 43.7% {ICCs between 0.69 and 0.80). Five runners showed a consistent NHS landing during OG and TM measurements and 4 to 7 subjects showed inconsistencies in landing strategy. It is concluded that the instrumented treadmill is a usable tool for the measurement of vGRFs during running. The treadmill is highly valid for the assessment of most vGRF parameters, except LR and ALR which should be viewed with caution because of the low levels of agreement. In future research it may be interesting to examine the possibility to measure GRF related parameters during 'natural running' with an accelerometer.

Item Type:	Thesis (Thesis)
Supervisor name:	Zijlstra, dr. Wiebren and Zijlstra, drs. Sjouke and Bredeweg, drs. Steef and Buist, dr. Ida
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 10:49
Last Modified:	25 Jun 2020 10:49
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/995

Actions (login required)

View Item