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CTRI Number  CTRI/2025/12/098304 [Registered on: 02/12/2025] Trial Registered Prospectively
Last Modified On: 13/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Physiotherapy (Not Including YOGA) 
Study Design  Other 
Public Title of Study   effect of deep neck muscle stretching and strengthening on functional movement and position sense in excessive smartphone users 
Scientific Title of Study   Effect of deep cervical flexor stretching and extensor strengthening on functional range of motion and proprioception in excessive smartphone users  
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Fathimath Suzaifa 
Designation  Post graduate student  
Affiliation  Yenepoya physiotherapy college  
Address  Yenepoya physiotherapy college , university road, deralakatte, mangaluru 575018, karnataka, india

Dakshina Kannada
KARNATAKA
575018
India 
Phone  7338209120  
Fax    
Email  suzaifasulaiman@gmail.com  
 
Details of Contact Person
Scientific Query  
Name  Anjana S 
Designation  Assistant professor  
Affiliation  department of physiotherapy, yenepoya physiotherapy college 
Address  Yenepoya physiotherapy college , university road, deralakatte, mangaluru 575018, karnataka, india

Dakshina Kannada
KARNATAKA
575018
India 
Phone  6363924912  
Fax    
Email  Anjanas@yenepoya.edu.in  
 
Details of Contact Person
Public Query  
Name  Prof Lourdhuraj I  
Designation  Principal  
Affiliation  Yenepoya physiotherapy college  
Address  Yenepoya physiotherapy college , university road, deralakatte, mangaluru 575018, karnataka, india

Dakshina Kannada
KARNATAKA
575018
India 
Phone  9940529169  
Fax    
Email  lourdhuraj@yenepoya.edu.in  
 
Source of Monetary or Material Support  
Yenepoya University  
 
Primary Sponsor  
Name  Fathimath suzaifa  
Address  Yenepoya physiotherapy college , university road, deralakatte, mangaluru 575018, karnataka, india  
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 
Fathimath suzaifa   Yenepoya Medical College Hospital   Yenepoya medical college hOSPITAL, University road, Deralakatte, Mangaluru 575018, Karnataka, india
Dakshina Kannada
KARNATAKA 		 7338209120

suzaifasulaiman@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Yenepoya ethic commitee-3  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: M953||Acquired deformity of neck,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Cervical flexor stretching and extensor strengthening   Participants will undergo a 2-week supervised intervention, with sessions conducted 5 times per week. [16] Exercise Program: •Deep Cervical Flexor Stretching: Targeting longus colli and longus capitis muscles. [15, 16 ] 1- Supine chin tuck stretch : Patient position: lie on your back with knees bent and arms relaxed Procedure: gently tuck your chin in, as making a double chin , feel stretch deep inside the front of your neck, avoid lifting your head off of the surface Hold: 30 seconds repetition: 15 sets: 3 3 mins rest between each set •Extensor Strengthening: Focusing on cervical extensors to improve neck stability and posture. 1- Patient position : lie on prone with head just beyond the edge Procedure : chin tuck slightly, slowly raise your head until aligned with trunk, avoid over extending or lifting the chin too high. Hold: 30 seconds repetition: 15 set: 3 3 mins rest between each set  
Comparator Agent  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  25.00 Year(s)
Gender  Both 
Details  Participants whose SAS-SV score is more than 35 for male and female
College going students 
 
ExclusionCriteria 
Details  a. Person with medical condition or undergone surgery.
b. Participants with screen time less than 4 hours.
c. Treatment for recent cervical spine trauma 
 
Method of Generating Random Sequence   Random Number Table 
Method of Concealment   Centralized 
Blinding/Masking   Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
SAS-SV Scale
Craniovertebral Angle
Joint Position Error Test 		 pre and post 2 weeks of intervention  
 
Secondary Outcome  
Outcome  TimePoints 
Nil  Nil 
 
Target Sample Size   Total Sample Size="26"
Sample Size from India="26" 
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)   09/12/2025 
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  

This study titled “Effect of Deep Cervical Flexor Stretching and Extensor Strengthening on Functional Range of Motion and Proprioception in Mobile Phone Addicts” aims to evaluate the effectiveness of targeted neck exercises in addressing musculoskeletal issues caused by excessive smartphone use. With smartphone addiction increasingly linked to forward head posture, reduced cervical range of motion, and impaired proprioception, this research investigates the impact of a two-week intervention involving deep cervical flexor stretching and extensor muscle strengthening. Conducted among college students aged 18–25 with high smartphone usage (SAS-SV score > 35), the study follows a single-group pre-post experimental design. Outcome measures include joint position error (JPE), craniovertebral angle (CVA), and functional cervical ROM. The data will be analyzed using SPSS with paired t-tests to assess significant changes pre- and post-intervention. It is anticipated that this targeted therapeutic approach will improve cervical alignment, muscle balance, and proprioceptive feedback, offering an effective strategy to counteract posture-related dysfunctions associated with mobile phone addiction.


 
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