"Knee Joint Position Sense and Dynamic Balance in Females With Primary Dysmenorrhea
ConditionPrimary Dysmenorrhea
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexFemale
Age18-25
SponsorCairo University
About this trial
The purpose of the study is to assess knee joint position sense, pain and dynamic balance in female with primary dysmenorrhea.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
They should be virgin, healthy female students
They have regular menstruation (3-8 days in duration, with 21-35 days in-between).
They should have the same activity level mild active female.
Their ages will range from 18 to 25 years old.
Disqualifiers
History of knee injury, surgery in the knee or spinal vertebrae.
Females having any vestibular problems, otitis media, labyrinthitis or any inner ear problems that affect balance
Women with any cognitive deficits
History of neuromuscular or spinal disease.
Trial population
Sixty-two healthy female university students will participate in this study. They will be selected randomly from faculty of physical therapy, Cairo University.
Trial design
Design model
Other
Time perspective
Cross-sectional
Treatments tested in this trial
No intervention
Other interventionNo intervention
Treatment groups
62 Participants
are divided into 2 treatment groupsGroup A: Asymptomatic Group1 intervention
Group B: Symptomatic Group1 intervention
Trial outcomes
Primary outcomes
1
Overall Stability Index (OSI) . Antero-posterior stability index score (APSI) . Medio lateral stability index score (MLSI) . Over all stability index score (OASI)
The Overall Stability Index (OSI) is the primary measure of dynamic postural control obtained from the balance assessment system. It reflects the standard deviation of the participant's sway from the platform's center across both the medial-lateral and anterior-posterior directions. Higher OSI values indicate greater instability and poorer balance performance. As an integrated measure of sway variability, the OSI is considered the most comprehensive indicator of overall balance ability and is commonly used to evaluate changes in postural control in response to therapeutic interventions.
Time frame
at first and fourth menstrual days2
Medial-Lateral Stability Index (MLSI)
The Medial-Lateral Stability Index (MLSI) quantifies the degree of side-to-side sway during balance testing. It represents the standard deviation of medial-lateral movement from the platform's center point, providing a directional measure of postural stability. Elevated MLSI scores reflect increased lateral instability, which may be associated with impaired neuromuscular control or deficits in weight-shifting ability. This variable is useful for identifying balance impairments that predominantly affect frontal plane stability.
Time frame
at first and fourth menstrual days3
Anterior-Posterior Stability Index (APSI)
The Anterior-Posterior Stability Index (APSI) measures front-to-back sway during dynamic balance assessment. Calculated as the standard deviation of anterior-posterior deviations from the center of the platform, the APSI provides insight into sagittal plane stability. Higher APSI values indicate greater instability and reduced capacity to control forward and backward movements. This index is important for evaluating postural control related to gait, stepping, and activities requiring controlled anterior or posterior shifts in the center of gravity.
Time frame
at first and fourth menstrual days4
knee joint position sense
using active knee position sense test by universal goniometer.
Time frame
at first and fourth menstrual daysSecondary outcomes
1
knee joint pain
It will be assessed using the Visual analog scale (VAS) for all females in both groups. They will score their level of pain from 1-10, with higher scores indicating more severe pain. It is valid and reliable in pain assessment
Time frame
at first and fourth menstrual daysSponsors and contacts
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Source ClinicalTrials.gov