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CTRI Number  CTRI/2025/07/090825 [Registered on: 14/07/2025] Trial Registered Prospectively
Last Modified On: 12/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Other 
Public Title of Study   Comparison of ankle muscle strength and movement in both the legs of KSRTC bus drivers: A cross-sectional study 
Scientific Title of Study   Comparison of ankle dorsiflexor strength and dorsiflexion range in bilateral lower limb among KSRTC bus drivers: A cross-sectional study 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Silvita Nazlin Crasta 
Designation  PG Student 
Affiliation  Father Muller college of physiotherapy 
Address  Father Muller College Of Physiotherapy. Dept of physiotherapy OPD No: 10

Udupi
KARNATAKA
576235
India 
Phone  7619241221  
Fax    
Email  silvitacrasta@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Ms P Chaitra Bhat 
Designation  Assistant Professor 
Affiliation  Father Muller college of physiotherapy  
Address  Father Muller college of physiotherapy, Dept of Musculoskeletal R Ward kankanady Mangaluru,

Dakshina Kannada
KARNATAKA
575002
India 
Phone  8904760245  
Fax    
Email  chaitraphysio07@fathermuller.in  
 
Details of Contact Person
Public Query
 
Name  Ms P Chaitra Bhat 
Designation  Assistant Professor 
Affiliation  Father Muller college of physiotherapy  
Address  Father Muller college of physiotherapy Dept of Musculoskeletal R Ward kankanady Mangaluru

Dakshina Kannada
KARNATAKA
575002
India 
Phone  8904760245  
Fax    
Email  chaitraphysio07@fathermuller.in  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  Silvita Nazlin Crasta 
Address  Gods Grace Villa, Near Annappayya Sabha Bhavan, Trasi post, Kundapur, Udupi Karnataka, India 576235 
Type of Sponsor  Other [Self] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Silvita Nazlin Crasta  KSRTC Bus Stand Mangaluru  VRPR+736 Bus Stand (KSRTC OFFICE), Bejai Main Rd, Mallikatte, Bejai, Mangaluru
Dakshina Kannada
KARNATAKA 
7619241221

silvitacrasta@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Father Muller Institutional Ethics Committee (FMIEC)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  KSRTC Bus Drivers 
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  30.00 Year(s)
Age To  55.00 Year(s)
Gender  Male 
Details  Professional drivers (Manual transmission) only for 5 years or more
Drive for a minimum of 5hrs per day for 5 days in a week 
 
ExclusionCriteria 
Details  Neurological disorders
Disorders of the ankle or injuries/surgeries in the previous six months
Acute and chronic swelling in the bilateral ankle
Individuals not willing to participate 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Dorsiflexor strength :
Dorsiflexor strength in bilateral lower limb will be assessed using mechanical
dynamometer

Dorsiflexion range:
Dorsiflexion range in bilateral lower limb will be assessed using universal
goniometer  
20 min 
 
Secondary Outcome  
Outcome  TimePoints 
NIL  NIL 
 
Target Sample Size   Total Sample Size="10"
Sample Size from India="10" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   25/07/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary    According to the International Labour Organisation (ILO) and earlier studies, occupational drivers have a higher prevalence of MSDs (Musculoskeletal Disorders) than other worker types because of their line of work. One of the main causes of early retirements among professional drivers is work-related MSDs [1]. Professional drivers frequently deal with bad road conditions and have significant drawbacks, including bad posture, time constraints, extended sitting, vibrations from the vehicle-road interface, excessive physical strain, and twisting motions while driving, all of which can be harmful to their health and result in a WMSD (Work-related musculoskeletal disorders) [2]. A study by Sheth A et al revealed that the prevalence of musculoskeletal disorders among bus drivers in India was 49.2% [3]. Lower extremities are at danger from repetitive tasks because of the increased force transfer through the legs and spine when using the brake, clutch, and accelerator [4]. The tibialis anterior (TA) is the predominant muscle in the anterior compartment of the lower leg, comprising about 60% of the total volume of ankle dorsiflexor muscles, and it shares functions with extensor hallucis longus and the extensor digitorum longus [5]. Due to the prolonged static contraction of the TA muscle, Y Jammes et al. observed EMG indications of muscular fatigue in many of the individuals [6]. Long-term sitting in one place can cause bad posture, restricted movement, and repetitive strain on ankles. Although there is involvement of bilateral ankle movement during manual transmission, the number of repetitive movements in each ankle is not the same, and the amount of activation in tibialis anterior is different. There is a need for comparing the muscle strength and ankle range in both ankles to check for muscle imbalance. 
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