Effect of Referent Type on Balance in Action Observation.

Effect of Referent Type on Balance in Action Observation in Healthy People: Randomized Clinical Trial.

The objective of the study is to analyze whether observing the actions of a referent selected by the participants improves balance in asymptomatic individuals compared to those who observe a standard referent.

Design: Randomized controlled clinical trial. The primary endpoint of the study was the balance recorded by force platform (estatic) and Y balance test (dynamic).

Setting: The participants will be healthy people in the province of Tarragona.

Participants: They will be randomly assigned to one of three groups using a computerized randomized list:

• Control Group (CG): Participants will watch a video of landscapes without human or animal movement.
• Intervention Group with Referent (GIR): Participants will observe actions whose referent has been selected by themselves based on perceived similarity.
• Standard Intervention Group (GIE): Participants will observe actions with a standard reference.

Inclusion Criteria:

• Be of legal age.
• Have a mobile device.
• Have normal or corrected-to-normal vision.
• Absence of neurological, orthopedic or vestibular disorders.
• Absence of specific balance skills due to competitive sports.
• Obtain a score of 3 or less on the Tegner activity scale.
• Having voluntarily signed the informed consent and being willing to follow the protocol proposed by the research team.

Exclusion Criteria:

• History of participation in any study with movement representation methods.
• Subjects with impaired communication and/or compression.