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Completed

NCT Number: NCT04896190

The Relationship Between Q Angle and Quadriceps Muscle Activation on Dynamic Balance in Women

The quadriceps angle (Q angle) is significant for the lower extremity alignment. Anatomical alignment of Q angle is related to Quadriceps muscle strength. Women have consistently been found to have larger Q angles than men and are more often affected due to patellofemoral problems. Quadriceps muscle activation and lower extremity alignment affect musculoskeletal health in women.The aim of this study wa s to determine the relationship between Q angle and quadriceps muscle activation on dynamic balance in women.

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Key information

Conditions

Physiotherapy and Rehabilitation

Age range

19 year–25 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Istanbul Medipol University

Istanbul, Turkey (Türkiye)

About this study

Objective: To determine the relationship between Q angle and quadriceps muscle activation on dynamic balance in women. Design: Correlational Study. Setting: University. Participants: Forth women will be included in the study. Interventions: Q angle in standing and supine positions, quadriceps muscle activation, static and dynamic balance and functionality were measured. Main Outcome Measurements: Q angle will measured with a tape measure; muscle activation will measured with Surface Electromyography (EMG) static balance will measured with Flamingo Balance Test (FBT); dynamic balance will measured with ProKin 252 Techno Body device; and, functionality will measured with Short Form Musculoskeletal Assessment (SFMA). Before the evaluation of EMG amplitude on dynamic balance position, the Q angle will measured in supine and standing positions. The EMG signals collected by measuring the muscle activation of the Vastus Medialis and Vastus Lateralis during dynamic balance position on the ProKin device will recorded.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • The inclusion criteria were being women, being aged 19-25, and not having musculoskeletal or neurological problems.

Exclusion criteria

  • Exclusion criteria were having an operation in the past year, taking medicine related to lower limb problems, persistent pain and discomfort of the lower extremity.

Treatment and study plan

Evaluation of Q angle and Quadriceps muscle activation on dynamic balance position

Other

Evaluation of Q angle, Quadriceps muscle activation, static and dynamic balance and functionality of all individuals was done.

Primary outcomes

  1. Q angle evaluation

    Time frame: 5 minutes

    The Q angle was measured with a standard universal goniometer. It was measured by drawing a line from the Anterior Superior Iliac Spine to the center of the patella and a second line from the center of the tibial tubercle to the center of the patella.

  2. Electromyographic (EMG) measurements

    Time frame: 15 minutes

    EMG biofeedback is a device that detects neuromuscular contractions and provides feedback signals to the subject. During the ProKin 252 Techno Body balance system, Vastus Medialis and Vastus Lateralis muscles activity levels were recorded at 1000-Hz sample data-regulating Surface EMG device and analyzed using the Biometrics Datalog (UK) system.

  3. Dynamic Balance Evaluation

    Time frame: 15 minutes

    Dynamic balance was evaluated by ProKin 252 Techno Body balance device. The participants were taken to the balance platform on the right foot with their eyes open, after determining the reference interval and setting the test time as 30 seconds.They were instructed to stay balanced on the platform

Secondary outcomes

  1. Static Balance Evaluation

    Time frame: 5 minutes

    Static balance was assessed with Flamingo Balance Test (FBT) in open and closed eyes conditions.The subjects stood on the beam which was 50 cm long, 5 cm in height and 3 cm wide. Then the instructor started the stopwatch and the subjects tried to stand in this position for one minute. When the time was over, the subjects' attempts after they fell were counted and this score was recorded

  2. Functionality Assessment

    Time frame: 5 minutes

    The functional status of subjects was evaluated with the Short Musculoskeletal Function Assessment Questionnaire (SMFA).

Sponsors and collaborators

Lead sponsor

Istanbul Medipol University Hospital

Other

Registry information

Acronym: Quadriceps

Important dates

Study start
2019
Primary completion
2021
Study completion
2021
First posted
May 21, 2021
Registry last updated
May 21, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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