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3. RESULTS AND DISCUSSION 
In this study, the patients who have a lower back pain were 
selected as subjects. They are undergoing kinesitherapy for 
movements in rhythmic stabilization. One kind of medical 
therapies uses dynamic shoe insoles that have some pads. The 
shape and location of pads on the insoles of the two feet are 
different. These insoles are put inside the shoes. They influence 
patient to bio-feedback control better walking balance 
dynamically. So, homeostasis maintains. The other case of 
patient has a sprained foot (Figure. 4). 
The fluctuations of both knees while walking were measured for 
ten minutes on a straight path. They walked on their own speed 
naturally. Measurements were taken with patients before and 
after therapy. It was observed that before kinesitherapy, their 
body alignments were not well and also each person's feedback 
control movement of left and right legs was not rhythmic while 
walking. Patients have own feedback control movement of both 
legs. In hospital, highly experienced doctors and physical 
therapists are used to observing the movement of the patients 
visually. 
After physical and mental stress were given, the movement of 
center bodv eravitv while standing. was also measured. 
3 
3.1 Biomechanical Analysis by Acceleration on Walking 
Stability 
In case of the patients who have a damaged left back: before 
therapy, the fluctuations of both knees' acceleration were 
different, showed unstable, after a month kinesitherapy, that of 
both knees became similar to each other (Figure 5). 
axes of their both knees’ fluctuations became better and 
rhythmic, however it was difficult to explain the relationship 
between both knees after therapy with original data. 
In case of the patient who has a sprained right foot: before 
therapy, the fluctuations of both knees were not smooth and not 
showed better feedback control movements in the 
anteroposterior axis especially, after two months kinesitherapy, 
the fluctuations of both knees were decreased and similar to 
each ether. 
After therapy, accelerations in the anteroposterior and vertical 
axes of their both knees’ fluctuations became better and 
rhythmic, and decreased foot pain, however it was difficult to 
explain the relationship between both knees after therapy with 
the original data. 
  
  
  
  
  
  
  
  
  
  
  
  
  
Patient with damaged sprained right foot 
Homeostasis 
  
Dynamic shoe insoles 
    
Patient with damaged left back 
  
  
Bio-feedback control movement 
Figure 4. Walking by Patient Having a Lower Back Pain and a Sprained Foot 
m/sec 2 
005 + 
  
Before therapy 
Normal side 
  
  
  
0.04 
0.03 
0 1 2 3 4 3 6 7 8 9 10 
m/sec 2 
0.05 Afier therapy 
Normal side 
; & \ A N * ; 
0.04 d 5 Y em NC MU IN. is ; p tU ^ 
A A um wi ; Mb : Men h : 5 à . n N y i N ~ \ A 3 Sedbed el ^ : ^ * Mn eer bre | 
: 1 ea Xd Sa N Qt v “il M ^e Net vN L Y 
(+ ‘ A al * Y 25^ 
. f Damaged side 
sec 
003 | : 1 : a 
0 2 4 6 8 10 
Figure 5. Biomechanical Analysis by Acceleration on Walking Stability 
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