Inger Mechlenburg

Inter-tester Reliability of the Hand-held dynamometer and the Leg Extensor Power Rig applied on Patients after Total Hip Arthroplasty

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskningpeer review

Background: Rehabilitation has an increasing focus
on intensive resistance training early
after joint replacement. This increases
the requests for measuring changes in
the muscle strength and muscle power
over time. Hand-held dynamometer
(HHD) is a device used to measure
isometric muscle strength and Leg
Extensor Power Rig (LEPR) is a tool
for measuring muscle power.

Purpose / Aim of Study: To test the inter-tester reliability of the
HHD and the LEPR in Total Hip
Arthroplasty (THA) patients.

Materials and Methods: Two groups each consisting 20
subjects were included. Mean age was
68.4 years. All subjects had THA
surgery three months prior to testing.
The subjects conducted two test
sessions with HHD and LEPR, with
two different testers, separated by a
break of 1½ hour. We assessed the
relative inter-tester reliability with
Intraclass Correlation Coefficient (ICC)
and the absolute reliability with Limits
of Agreement (LOA).

Findings / Results: Inter-tester reliability for the HHD:
There was no significant difference
between the two testers (p=0.66) and
the two tests (0.41); ICC=0.94 (95%
CI: 0.86;0.97) ; LOA=±18 Newton.
Inter-tester reliability for the LEPR:
There was no significant difference
between the two testers (p=0.62) and
the two tests (0.14); ICC=0.91 (95%
CI: 0.79;0.96); LOA=±34Watt.

Conclusions: The relative reliability was acceptable
for both HHD and LEPR. The absolute
reliability showed that a change in the
muscle strength/power above 18
Newton or 34 Watt can be counted as
a real change for this population.
StatusUdgivet - 2012
BegivenhedDOS kongressen - SAS Radisson Blue, København, Danmark
Varighed: 24 okt. 201226 okt. 2012


KonferenceDOS kongressen
LokationSAS Radisson Blue

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