Determining the relationship between vertical stiffness and the variable of time to achieve stability in three directions: vertical, anterior-posterior and medio-lateral
Design
From the statistical population of this study, including active male physical education students of Kharazmi University, 20 people participated voluntarily in this study.
Settings and conduct
data collection was performed in Movafaqian Laboratory Motion Analysis Laboratory.
the subjects performed the hopping test in the form of 15 consecutive hop on the force plate bilaterally and unilaterally with three strategies (preferred, control and maximal).
After performing the hopping tests, A platform with a height of 35 cm was placed at a distance of 10 cm from the force plate. The subject was asked to stand on the platform , barefoot, and on the non-dominant leg, and to jump by landing on the dominant leg in the center of the force plate and as soon as he landed, he would balance in the same position for about 20 seconds.
Participants/Inclusion and exclusion criteria
20 active male physical education students of Kharazmi University
Inclusion criteria: Subjects had at least two sessions per week and at least one hour of exercise per session.
Exclusion criteria: not having any abnormalities and injuries in the lower extremities during the last six months
Intervention groups
Intervention group: Healthy, active males physical education students. The subjects performed unilaterally and bilaterally hopping tests with three strategies of maximal, control and preferred and then performed landing test on the force plate from a 30 cm height. Finally, the relationship between the vertical stiffness calculated during hopping tests and the time to stability during landing was determined.
Main outcome variables
Vertical stiffness; vertical Time to stability ;anterior-posterior Time to stability ; medio-lateral Time to stability
General information
Reason for update
Acronym
IRCT registration information
IRCT registration number:IRCT20201206049627N1
Registration date:2021-01-01, 1399/10/12
Registration timing:registered_while_recruiting
Last update:2021-01-01, 1399/10/12
Update count:0
Registration date
2021-01-01, 1399/10/12
Registrant information
Name
Mohammadamin Mohammadian
Name of organization / entity
The University of Kharazmi
Country
Iran (Islamic Republic of)
Phone
+98 51 3833 7488
Email address
amin.electronic71@gmail.com
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2020-12-23, 1399/10/03
Expected recruitment end date
2021-01-20, 1399/11/01
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Investigation of the relationship between vertical stiffness and time to stability index during landing
Public title
Investigation of the relationship between vertical stiffness and time to stability index during landing
Purpose
Other
Inclusion/Exclusion criteria
Inclusion criteria:
Subjects had at least two sessions per week and at least one hour of exercise per session.
Exclusion criteria:
Any anomalies or injuries during the last six months
Age
From 24 years old to 28 years old
Gender
Male
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size:
20
Randomization (investigator's opinion)
N/A
Randomization description
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Single
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Ethics Committee of the Institute of Physical Education and Sports Sciences
Street address
No. 3. 5th alley, Miremad Street, Motahary Ave
City
tehran
Province
Tehran
Postal code
1587958711
Approval date
2017-11-26, 1396/09/05
Ethics committee reference number
IR.SSRI.REC.1396.126
Health conditions studied
1
Description of health condition studied
non
ICD-10 code
ICD-10 code description
Primary outcomes
1
Description
vertical stiffness
Timepoint
just one visit
Method of measurement
force plate
2
Description
time to stability
Timepoint
just one visit in lab
Method of measurement
force plate
Secondary outcomes
empty
Intervention groups
1
Description
intervention group: Twenty healthy, active males of physical education and sport sciences of Kharazmi University . Each subject performed 15 consecutive hopping jumps bilaterally, unilaterally on dominant leg and unilaterally on non-dominant leg (nine variations in total) with three preferred, maximum and control strategies on the force plate and a single-legged landing test from a 30 cm platform on the force plate with three repetitions. Each subject in just one session in the laboratory performed 15 consecutive hopping jumps bilaterally and unilaterally with three preferred, maximum and control strategies barefoot and hand on waist on the force plate and then performed one-leg landing test on the force plate from a 30 cm platform with three repetitions.
Category
N/A
Recruitment centers
1
Recruitment center
Name of recruitment center
Kharazmi Unuiversity
Full name of responsible person
Mohammadamin Mohammadian
Street address
No. 49, Enghelab Ave, Mofateh Ave
City
Tehran
Province
Tehran
Postal code
1571914911
Phone
+98 21 8670 5503
Email
amin.m71@gmail.com
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
The University of Kharazmi
Full name of responsible person
Mohammadali Hosseini
Street address
No. 49, Enghelab Ave, Mofateh Ave
City
Tehran
Province
Tehran
Postal code
14571914911
Phone
+98 21 8883 0893
Email
kharazmi@gmail.com
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
The University of Kharazmi
Proportion provided by this source
80
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
The University of Kharazmi
Full name of responsible person
Mohammadamin Mohammadian
Position
PhD candidate
Latest degree
Master
Other areas of specialty/work
Sport Biomecanics
Street address
No. 49, Enghelab Ave, Mofateh Ave
City
Tehran
Province
Tehran
Postal code
3197937551
Phone
+98 21 8883 0893
Email
amin.m71@gmail.com
Person responsible for scientific inquiries
Contact
Name of organization / entity
The University of Kharazmi
Full name of responsible person
Mohammadamin Mohammadian
Position
PhD Candidate
Latest degree
Master
Other areas of specialty/work
Sport Biomechanics
Street address
No. 56, Ladan8 Ave, Vakilabad Blvd
City
Mashhad
Province
Razavi Khorasan
Postal code
9179654597
Phone
+98 51 3833 7488
Email
amin.m71@gmail.com
Person responsible for updating data
Contact
Name of organization / entity
The University of Kharazmi
Full name of responsible person
Mohamadamin Mohammadian
Position
PhD Candidate
Latest degree
Master
Other areas of specialty/work
Sport Biomechanics
Street address
No. 56, Ladan8 Ave, Vakilabad Blvd
City
Mashhad
Province
Razavi Khorasan
Postal code
9179654597
Phone
+98 51 3833 7488
Email
amin.m71@gmail.com
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
No - There is not a plan to make this available
Clinical Study Report
Not applicable
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