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The Effects of Proprioceptive Training on a BOSU Ball on Balance, Agility, Landing Error, and Ankle Joint Proprioception in Male Karate Kata Athletes

Protocol summary

Study aim
The aim of this study is to investigate the effect of six weeks of BOSU ball proprioceptive training on static balance, dynamic balance, agility, landing error, and ankle proprioception in male karate athletes aged 18–25 years.
Design
Clinical trial with control group, with parallel group, single blinded
Settings and conduct
assessments will be conducted at the Sports Rehabilitation Laboratory of Bu-Ali Sina University. Participants will be randomly assigned to the intervention and control groups. The intervention will be performed in the university sports hall. This study will be conducted as a single-blind trial, in which the outcome assessor will be unaware of participants’ group allocation and will perform all assessments and data recording without knowledge of group assignments.
Participants/Inclusion and exclusion criteria
Inclusion Criteria: Male karate athletes aged 18–25 years with at least one year of regular karate training experience, good general health status, no cardiovascular, neurological, or balance disorders affecting performance, no history of severe ankle sprain, lower-extremity fracture, or surgery within the previous six months, no acute lower-extremity pain at the time of assessment, and no use of ankle brace or orthosis. Exclusion Criteria: Occurrence of any musculoskeletal injury during the study, failure to comply with the training protocol or complete the assessments, absence from training sessions, initiation of a specific rehabilitation program, use of anti-inflammatory medications or drugs affecting motor performance and balance, use of an ankle brace or orthosis during the study, and diagnosis of a neuromuscular, balance-related, or cardiovascular disorder during the study.
Intervention groups
Proprioceptive training group, control group
Main outcome variables
Ankle proprioception, static balance, dynamic, Balance, agility, Landing error

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20260620069887N2
Registration date: 2026-06-27, 1405/04/06
Registration timing: prospective

Last update: 2026-06-27, 1405/04/06
Update count: 0
Registration date
2026-06-27, 1405/04/06
Registrant information
Name
Raziyeh Taheri
Name of organization / entity
Bu-ali sina-hamedan
Country
Iran (Islamic Republic of)
Phone
+98 81 3323 2831
Email address
r.taheri@phe.basu.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2026-07-04, 1405/04/13
Expected recruitment end date
2026-07-25, 1405/05/03
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
The Effects of Proprioceptive Training on a BOSU Ball on Balance, Agility, Landing Error, and Ankle Joint Proprioception in Male Karate Kata Athletes
Public title
The Effect of Proprioceptive Training on Lower Extremity Functional Performance in Male Karate Athletes
Purpose
Treatment
Inclusion/Exclusion criteria
Inclusion criteria:
Male karate athletes aged 18–25 years At least one year of regular karate training experience No cardiovascular, neurological, or balance disorders affecting performance No history of severe ankle sprain, lower-extremity fracture, or surgery within the previous six months No history of severe ankle sprain, lower extremity fracture, or surgery in the past six months No use of ankle brace o r orthosis during the study period
Exclusion criteria:
Occurrence of any musculoskeletal injury during the study Failure to comply with the training protocol or complete assessments Absence from the prescribed training sessions Initiation of a specific rehabilitation program during the study Use of anti-inflammatory medications or drugs affecting motor performance and balance Diagnosis of a neuromuscular, balance-related, or cardiovascular disorder during the study
Age
From 18 years old to 25 years old
Gender
Male
Phase
N/A
Groups that have been masked
  • Outcome assessor
Sample size
Target sample size: 40
Randomization (investigator's opinion)
Randomized
Randomization description
Following participant recruitment and baseline assessment, eligible participants will be randomly assigned to the intervention or control group using Random Number Generator software. Allocation will be performed in a 1:1 ratio.
Blinding (investigator's opinion)
Single blinded
Blinding description
This study will be conducted as a single-blind trial. The outcome assessor will be blinded to group allocation and will perform all baseline and post-intervention assessments without knowledge of participants' group assignments.
Placebo
Not used
Assignment
Parallel
Other design features

Secondary Ids

empty

Ethics committees

1

Ethics committee
Name of ethics committee
Ethics committee of Bu Ali Sina University
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Approval date
2026-04-18, 1405/01/29
Ethics committee reference number
IR.BASU.REC.1405.007

Health conditions studied

1

Description of health condition studied
Healthy karate athletes
ICD-10 code
Z00.8
ICD-10 code description
Encounter for other general examination

Primary outcomes

1

Description
Static balance
Timepoint
Before the intervention begins, One day after the end of the intervention
Method of measurement
Static balance will be assessed using the 20-second single-leg stance test based on the number of balance errors.

2

Description
Dynamic balance
Timepoint
Before the intervention begins, One day after the end of the intervention
Method of measurement
Dynamic balance will be assessed using the Y Balance Test based on the maximum reach distance in different directions.

3

Description
Agility
Timepoint
Before the intervention begins, One day after the end of the intervention
Method of measurement
Agility will be assessed using the T-test based the time required to complete the test in seconds.

4

Description
Landing error
Timepoint
Before the intervention begins, One day after the end of the intervention
Method of measurement
Landing error will be assessed using the Landing Error Scoring System(LEES) based on the landing error score.

5

Description
Ankle Proprioception
Timepoint
Before the intervention begins, One day after the end of the intervention
Method of measurement
Ankle proprioception will be assessed using the joint position reproduction test at 10 degree of dorsiflexion based on the angular repositioning error measured by a goniometer.

Secondary outcomes

empty

Intervention groups

1

Description
Intervention group: Proprioceptive exercises on the Basu-ball, Participants will perform a Bosu-Ball–based proprioceptive training program for 6 weeks, consisting of 3 sessions per week, with each session lasting 60 minutes. Each session will include 10 minutes of warm-up, approximately 45 minutes of progressive proprioceptive exercises (including double-leg and single-leg balance tasks, weight-shifting exercises, squats, lunges, and functional exercises performed on the Bosu-Ball with gradually increasing difficulty), followed by 5 minutes of cool-down. All training sessions will be conducted under the supervision of the researcher.
Category
Prevention

2

Description
Control group: Participants in the control group will not receive the Bosu-Ball–based proprioceptive training intervention during the 6-week study period and will continue their usual daily activities and routine football training.
Category
Other

Recruitment centers

1

Recruitment center
Name of recruitment center
Hamadan Province Sports Directorate
Full name of responsible person
Ali Albakirat
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Phone
+98 81 3838 1423
Email
taheri4347@gmail.com

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
Bu Ali Sina University
Full name of responsible person
Farzane Saki
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Phone
+98 81 3838 1423
Email
taheri4347@gmail.com
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Bu Ali Sina University
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic

Person responsible for general inquiries

Contact
Name of organization / entity
Bu Ali Sina University
Full name of responsible person
Ali Albakirat
Position
Student
Latest degree
Bachelor
Other areas of specialty/work
Sport Rehabilitation
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Phone
+98 81 3838 1423
Email
taheri4347@gmail.com

Person responsible for scientific inquiries

Contact
Name of organization / entity
Bu Ali Sina University
Full name of responsible person
Ali Albakirat
Position
Student
Latest degree
Bachelor
Other areas of specialty/work
Sport Rehabilitation
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Phone
+98 81 3838 1423
Email
taheri4347@gmail.com

Person responsible for updating data

Contact
Name of organization / entity
Bu-ali sina-hamedan
Full name of responsible person
Raziyeh Taheri
Position
Student
Latest degree
Bachelor
Other areas of specialty/work
Sport rehabilitation
Street address
Modares Town, Abu Taleb Street, Bu Ali Sina University
City
hamedan
Province
Hamadan
Postal code
3869565178
Phone
+98 81 3323 2831
Fax
Email
r.taheri@phe.basu.ac.ir

Sharing plan

Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Undecided - It is not yet known if there will be a plan to make this available
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available
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