The Locomotive syndrome stage was Associated with Chronic Ankle Instability in Community-Dwelling Elderly

Takeshi Toyooka, Eiki Tsushima, Shiro Sugiura, Yasutaka Omori, Akito Takata, Yuzuru Okamoto, Satoru Nishikawa
Purpose:

To investigate the relationship between CAIT and foot muscle strength for GLFS-25 and two-step test value. To investigate the relationship between CAIT and foot muscle strength for GLFS-25 and two-step test value. 

Methods:

We evaluated GLFS-25, two-step value, CAIT, and ankle eversion muscle strength in 49 elderly community residents (mean age 79.0±5.2 years) who attended a local community exercise club. From the score of GLFS-25, the LS stage was classified into 4 levels (0-3) according to the classification of the Japanese Orthopaedic Association. Two-step value was calculated by measuring the maximum stride length of two-step according to previous studies and dividing the value by the height. The ankle eversion muscle strength was evaluated with manual muscle testing equipment (μ-tasF-1, OG Wellness) . Statistical methods where a one-way analysis of variance was performed for the two-step value, CAIT and ankle eversion muscle strength, with the LS stage as a factor. Multiple comparisons were used to test for differences among the LS stages for which significant differences were found. 

Results:

 The breakdown of LS stage was stage 0:21, 1:16, 2:8, 3:4. The CAIT by LS stage was stage0:27.81±3.01, 1:25.97±4.20, 2:22.31±6.24, and 3:14.50±9.04. One-way analysis of variance showed a significant difference, but multiple comparisons showed a not significant difference (p0.05 effect size [Eta squared] =0.27). The two-step value by LS stage was stage0:1.39±0.14, 1:1.26±0.12, 2:1.18±0.22, and 3:0.97±0.31. One-way analysis of variance showed a significant difference, and multiple comparisons showed a significant difference between LS stage 0 and 1 (p0.05 effect size [Eta squared] =0.37). The ankle eversion muscle strength (kgf) by LS stage was stage0:9.3±4.9, 1:7.3±1.9, 2:6.3±2.1, and 3:3.4±2.9. One-way analysis of variance showed a not significant difference (p=0.06 effect size [Eta squared] = 0.16). 

Conclusion(s):

Our results suggested that ankle eversion muscle strength affected not only ankle instability but also locomotive syndrome. We believe that locomotive syndrome is a generalized weakness, and that physical function should be improved not only by quadriceps and toe grasping muscle strength but also by a combination of various exercises.

Implications:

Advocate for combined training of the ankle eversion muscles in cases of LS with chronic ankle instability. 

Funding acknowledgements:
This study was not supported by any grant.
Keywords:
Locomotive syndrome
chronic ankle instability
ankle eversion muscle strength
Primary topic:
Older people
Second topic:
Health promotion and wellbeing/healthy ageing/physical activity
Third topic:
Musculoskeletal: lower limb
Did this work require ethics approval?:
Yes
Name the institution and ethics committee that approved your work:
IRB/ERC of Nishikawa Orthopaedic Clinic
Provide the ethics approval number:
2455
Has any of this material been/due to be published or presented at another national or international conference prior to the World Physiotherapy Congress 2025?:
No

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