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Stegfrekvensens betydelse för knäsmärtor vid långdistanslöpning, en pilotstudie
Linnaeus University, Faculty of Social Sciences, Department of Sport Science.
2019 (Swedish)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

SAMMANFATTNING

Bakgrund: Incidensen av löprelaterade skador varierar mellan 19.4-79.3% varje år. Knäsmärta är den vanligaste skadeorsaken. Ökad stegfrekvens har visat sig minska fotisättningsbelastning mot underlaget, minska vertikal förflyttning av tyngdpunkten och belastning mot leder i nedre extremitet.

Syfte: Syftet med denna studie var att undersöka om 10-15% stegfrekvensökning vid föredragen hastighet minskar knäsmärta hos vuxna löpare på motionsnivå.

Design: Pilotstudie

Metod: Stegfrekvens hos 15 vuxna försökspersoner med knäsmärta under eller efter långdistanslöpning undersöktes vid en föredragen hastighet. Stegfrekvensen ökades med 10-15% vid samma hastighet och de fick därefter springa med den nya frekvensen i två veckor. En metronom styrde frekvensen. Knee Osteoarthritis Outcome Score (KOOS) samt upplevd knäsmärta mättes med Numeric Rating Scale, (NRS). Mätningar gjordes före och efter träningsperioden.

Resultat: En signifikant reducering av knäsmärta uppmättes på NRS (p=0.001). Signifikant förbättring av KOOS (p=0.004), KOOS funktion, fritid och idrott (p=0.007) och KOOS livskvalité (p=0.023) vid ökad stegfrekvens på 10-15% efter två veckors träning.

Slutsats: Resultatet av denna pilotstudie visar att det förefaller vara viktigt att analysera stegfrekvens som första rehabiliteringsinsats hos motionslöpare med knäsmärtor.

 

Abstract [en]

ABSTRACT

Background: The incidence of running related injuries every year ranges from 19.4-79.3%. Knee pain is the most common injury. It has been shown that increased step-rate reduces peak ground forces, vertical displacement of the centre of mass and joint loads in the lower extremity.

The purpose of this study was to investigate if 10-15% increased step-rate at self selected speed could decrease knee pain in adult recreational runners.

Design: Pilot study

Methods: 15 adult recreational runners with knee pain during or after training sessions were recruited. Step rate/min were measured at self selected speed.

Step-rate was increased by 10-15% at the same speed. The participants used a metronome to remember the frequency in a 2 week training session and then we did a follow up. Knee Osteoarthritis Outcome score (KOOS) and numeric rating scale (NRS) were measured before and after the training session.  

Results: There was a significant reduction in knee pain on the NRS (p=0.001). Significant improvement in KOOS (p=0.004), KOOS sport/recreation (p=0.007) and KOOS knee related quality of life (p=0.023) after two week training session with increased step rate 10-15% at a self selected speed.

Conclusion: The results from this pilot study implies that it is important to analyze step-rate as a first intervention in physical therapy when we rehabilitate long distance runners with knee pain. 

 

Place, publisher, year, edition, pages
2019. , p. 19
Keywords [en]
Biomechanics, injury, lower extremity, running, step rate.
Keywords [sv]
biomekanik, löpning, nedre extremitet, skador, stegfrekvens.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-85581OAI: oai:DiVA.org:lnu-85581DiVA, id: diva2:1326930
External cooperation
Marica Henriksson
Supervisors
Examiners
Available from: 2019-06-19 Created: 2019-06-18 Last updated: 2019-06-19Bibliographically approved

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