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CTRI Number  CTRI/2025/07/091468 [Registered on: 23/07/2025] Trial Registered Prospectively
Last Modified On: 22/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Other 
Public Title of Study   Neck Muscle activity in individuals undergoing cervical spine surgery  
Scientific Title of Study   Neck muscle activity in individuals undergoing cervical spine surgery—a single-group pre-post 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  Preeti S Agrawal  
Designation  Student  
Affiliation  Manipal College of Health Professions  
Address  Department of Physiotherapy, Manipal College of Health Professions, MAHE, Manipal - 576104

Udupi
KARNATAKA
576104
India 
Phone  6260246811  
Fax    
Email  preeti.mchpmpl2024@learner.manipal.edu  
 
Details of Contact Person
Scientific Query
 
Name  Manikandan Natarajan 
Designation  HOD 
Affiliation  Manipal College of Health Professions  
Address  Department of Physiotherapy, Manipal College of Health Professions, MAHE, Manipal - 576104

Udupi
KARNATAKA
576104
India 
Phone  9886898064  
Fax    
Email  mani.kandan@manipal.edu  
 
Details of Contact Person
Public Query
 
Name  Apoorva M Shankarnarayana 
Designation  Assistant Professor  
Affiliation  Manipal College of Health Professions 
Address  Department of Physiotherapy, Manipal College of Health Professions, MAHE, Manipal - 576104

Udupi
KARNATAKA
576104
India 
Phone  9591976213  
Fax    
Email  apoorva.s@manipal.edu  
 
Source of Monetary or Material Support  
3rd floor, Dhanvantri, Baliga Block, Kasturba Hospital, Manipal, Karnataka 576104  
 
Primary Sponsor  
Name  Preeti S Agrawal 
Address  Department of Physiotherapy, Manipal College of Health Professions, MAHE, Manipal - 576104 
Type of Sponsor  Other [] 
 
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 
Dr Preeti S Agrawal  Kasturba Hospital   3rd floor, Neurorehabilitation Physiotherapy Unit, Baliga block, , Dhanvantari, Kasturba hospital, manipal, Karnataka 576104
Udupi
KARNATAKA 
6260246811

preeti.mchpmpl2024@learner.manipal.edu 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Kasturba Medical College and Kasturba Hospital Institutional Ethics Committee - 2 (Student Research)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: G988||Other disorders of nervous system,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients planned for cervical spine surgery
Medically stable
Age range of 18-65 years
 
 
ExclusionCriteria 
Details  NThis study will include patients undergoing elective cervical spine surgery. However, individuals will be excluded if they have a pain score of six or above on the numerical pain rating scale, a history of prior neck surgeries, or coexisting neurological or musculoskeletal conditions that affect the neck muscles. Patients with skin conditions that prevent the application of EMG electrodes, those presenting with cervical vertebral trauma, and individuals with congenital cervical deformities will also be excluded from the study. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Percentage maximum voluntary contraction from EMG and Numerical Pain Rating Scale (NPRS)
 
1 day before surgery(baseline) and
2 days after surgery
 
 
Secondary Outcome  
Outcome  TimePoints 
nil  nil 
 
Target Sample Size   Total Sample Size="37"
Sample Size from India="37" 
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)   04/08/2025 
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  

Title
Neck Muscle Activity in Individuals Undergoing Cervical Spine Surgery – A Single Group Pre Post Study

Type of Study
Prospective cross sectional study

Aim and Objective
To assess neck muscle activity in terms of percentage maximum voluntary contraction before and after cervical spine surgery using surface electromyography

Justification
There is limited research on isometric neck muscle activity before and after surgery. Using surface electromyography provides objective data to guide postoperative rehabilitation and improve patient recovery

Study Period
April 2025 to March 2026

Sample Size
37 participants including 20 percent dropout rate

Inclusion Criteria
Adults aged 18 to 65 years scheduled for elective cervical spine surgery and medically stable

Exclusion Criteria
Severe pain score 6 or above on the numerical pain rating scale
History of prior neck surgery
Cervical trauma or congenital deformity
Neurological or musculoskeletal conditions affecting the neck
Skin conditions interfering with electrode placement

Tools Used
Surface electromyography and numerical pain rating scale

Procedure
Muscle activity of the trapezius and sternocleidomastoid will be recorded preoperatively and on the second postoperative day using surface electrodes during specific isometric tasks. Data will be averaged from three trials and compared

Outcome Measures
Percentage maximum voluntary contraction and pain score

Statistical Analysis
Descriptive statistics, normality testing using Shapiro Wilk test
Paired t test or Wilcoxon signed rank test will be used
Significance level set at p less than 0 point zero five

Potential Risks
Minimal risk involving slight discomfort or fatigue

Benefits
Helps design effective rehabilitation protocols
Improves neck strength, function, and overall recovery

Ethical Considerations
Institutional ethics committee approval
Informed consent and confidentiality ensured
Participant safety will be prioritized

Literature Review

Previous studies show changes in neck muscle function after cervical spine surgery. Muscle loss and altered activity patterns are linked to poor outcomes. Early identification and rehabilitation are essential to improve patient recovery and quality of life.

 
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