Welkom bij THIM Hogeschool voor Fysiotherapie & Bohn Stafleu van Loghum
THIM Hogeschool voor Fysiotherapie heeft ervoor gezorgd dat je Mijn BSL eenvoudig en snel kunt raadplegen. Je kunt je links eenvoudig registreren. Met deze gegevens kun je thuis, of waar ook ter wereld toegang krijgen tot Mijn BSL. Heb je een vraag, neem dan contact op met helpdesk@thim.nl.
Om ook buiten de locaties van THIM, thuis bijvoorbeeld, van Mijn BSL gebruik te kunnen maken, moet je jezelf eenmalig registreren. Dit kan alleen vanaf een computer op een van de locaties van THIM.
Eenmaal geregistreerd kun je thuis of waar ook ter wereld onbeperkt toegang krijgen tot Mijn BSL.
Login
Als u al geregistreerd bent, hoeft u alleen maar in te loggen om onbeperkt toegang te krijgen tot Mijn BSL.
Aging has been associated with increasing foot pronation [1] and changes in foot mobility and posture which may influence standing balance [2, 3]. Orthotic interventions change foot posture [4] and load distribution under the foot [5] and therefore may have important effects on balance in older people.
Objective
To investigate whether a pronated foot posture is associated with poorer standing balance in older people and whether medial heel and forefoot wedge orthoses affect their standing balance.
Design
Between groups, repeated-measures design.
Methods
Ten healthy older people with a pronated foot posture (age 67.1± 5.5 years) and sixteen healthy elderly with normal foot posture (age 67.1± 5.9 years) were recruited.The Foot Posture Index (FPI) was used to determine pronated and normal foot posture. Static balance in double limb stance was assessed using Kistler force plate measures during four shod conditions: 1) 5° medial heel and forefoot wedge (W5); 2) 8° medial heel and forefoot wedge (W8); 3) Control insole for W5 (flat EVA base with the same thickness as W5 (NW5)); 4) Control insole for W8 (flat EVA base with the same thickness as W8 (NW8)). Each of the four cases was completed with eyes open and eyes closed. The center-of-pressure (COP) total excursion and mean velocity and area of 95% confidence ellipse were derived as measures of standing balance.
Results
Participants with a pronated foot type (Mean FPI: 7.5) demonstrated greater total excursion (298.19±28.59mm versus 262.69±22.92mm) and total mean velocity (11.78±1.41mm.s-1 versus 10.41±1.13mm.s-1), and larger ellipse area (630.81±244.19mm2 versus 298.15±195.79 mm2), compared with participants with normal foot type (Mean FPI: 3.8) during normal standing, but this did not reach statistical significance (p>0.05) (Figure 1). There was a significant main effect for eyes open (p<0.05) with the total excursion (290.0 ± 14.7mm versus 321.9 ± 14.1mm) and mean velocity of COP in ML (8.9 ± 0.5mm.s-1 versus 10.2 ± 0.6mm.s-1) being significantly lower.
Figure 1
Percentage of mean differences in COP parameters between participants with a pronated foot type and those with normal foot type across different orthoses and eyes conditions (open and close)
×
There were no statistically significant effects from the four orthoses in the pronated nor the normal foot types (p<0.05). There were no significant differences in interaction of all conditions (foot posture × eye condition × orthoses) (p<0.05).
Conclusion
A trend towards less stable balance was observed in pronated foot type but this was not significant. Use of orthoses had no effect on balance parameters including negating the effects of eyes closed. Orthoses showed no negative effects on standing balance and therefore do not pose a threat to balance (e.g. if they are used for another purpose).
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
Binnen de bundel kunt u gebruik maken van boeken, tijdschriften, e-learnings, web-tv's en uitlegvideo's. BSL Podotherapeut Totaal is overal toegankelijk; via uw PC, tablet of smartphone.