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Gepubliceerd in: Journal of Foot and Ankle Research 1/2012

Open Access 01-12-2012 | Oral presentation

Effects of weight loss on foot structure in obese adults: a pilot study

Auteurs: Jinsup Song, Gary Foster, Reagan Kane, Dana N Tango, Stephanie Vander Veur, Naomi Reyes, Caitlin LaGrotte, James Furmato, Eugene Komaroff

Gepubliceerd in: Journal of Foot and Ankle Research | bijlage 1/2012

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Background

Excessive body weight can have a profound influence on weight bearing structure and function, including pain, disability, and compromised quality of life. A prospective cohort study of 5,784 people over the age of 50 years, showed that obesity was a strong predictor of the onset of severe disabling knee pain.[1] Similarly, increased weight was found to have an association with chronic plantar heel pain syndrome.[2] No study to-date has conducted an objective prospective examination of the differences in foot structure and function during significant weight change.

Materials and methods

In this randomized controlled prospective pilot study, 41 obese subjects were randomly assigned to either the treatment or the control group. Subjects assigned to the treatment group received weekly education plus pre-packaged portion-controlled meals while the control group received monthly education only. Foot structure measurements (malleolar valgus index and arch height) were assessed at baseline and 3-month. Repeated ANOVA (Matched Pairs by Group) analysis was performance using JMP 9.

Results

The mean age of study participants was 56.2 years old. While there was no difference in body mass index between the two groups at baseline, the treatment group lost significant weight at 3-month, see Table 1.
Table 1
Summary of foot structure measures of the control and the treatment groups at baseline and 3-month
 
Control
Treatment
p-value
 
Baseline
3-month
Baseline
3-month
 
Body Mass Index a
35.8
35.1
36.1
34.0
<0.0001
Malleolar Valgus Index (%)
12.9
12.9
13.4
12.7
0.3103
Standing arch height (cm)
6.11
6.18
5.99
6.02
0.5593
Arch drop (cm)
0.44
0.40
0.43
0.47
0.0828
a Control group lost an average of 1.9 kg (2.9%) of body weight while the treatment group lost 5.9 kg (6.2%) at 3-month visit.

Conclusions

No significant changes were noted in measured structural foot parameters at 3-month follow up between the two groups as a function of observed weight loss. It is not clear if a larger weight reduction would have yielded significant changes. Several foot dimensions (including standing arch height and arch height drop from the sitting to standing conditions) were linearly correlated with body weight.

Acknowledgements

Nutrisystem, Inc. provided the pre-packaged portion-controlled meals for the study.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://​creativecommons.​org/​licenses/​by/​2.​0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Literatuur
1.
go back to reference Jinks C, et al: Disabling knee pain – another consequence of obesity: Results from a prospective cohort study. BMC Public Health. 2006, 6: 258-10.1186/1471-2458-6-258. PubMedCentralCrossRefPubMed Jinks C, et al: Disabling knee pain – another consequence of obesity: Results from a prospective cohort study. BMC Public Health. 2006, 6: 258-10.1186/1471-2458-6-258. PubMedCentralCrossRefPubMed
2.
go back to reference Irving DB: Obesity and pronated foot type may increase the risk of chronic plantar heel pain: a matched case-control study. BMC Musculoskelet Disord. 2007, 8: 41-10.1186/1471-2474-8-41. PubMedCentralCrossRefPubMed Irving DB: Obesity and pronated foot type may increase the risk of chronic plantar heel pain: a matched case-control study. BMC Musculoskelet Disord. 2007, 8: 41-10.1186/1471-2474-8-41. PubMedCentralCrossRefPubMed
Metagegevens
Titel
Effects of weight loss on foot structure in obese adults: a pilot study
Auteurs
Jinsup Song
Gary Foster
Reagan Kane
Dana N Tango
Stephanie Vander Veur
Naomi Reyes
Caitlin LaGrotte
James Furmato
Eugene Komaroff
Publicatiedatum
01-12-2012
Uitgeverij
BioMed Central
Gepubliceerd in
Journal of Foot and Ankle Research / Uitgave bijlage 1/2012
Elektronisch ISSN: 1757-1146
DOI
https://doi.org/10.1186/1757-1146-5-S1-O48

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