เข้าพบผู้เข้าร่วมการวิจัย เพื่อชี้แ

Visit the research participants to clarify objectives, details of operation research and ask permission to record the image. Save the video working posture, weighing and measuring height, along with protecting the rights of research participants by a voluntary questionnaire and willing to participate in research by signed, written.

Visit with the participants. To clarify the purpose of conducting research and license records. Motion video recording function scales and height. And protecting the rights of research participants. For the voluntary and willing to participate in the research by signing an affidavit.

Meeting participant research. Objective to clarify the details of operation research and permission to save the image. Video recordings working weigh and measure the height, the protection of the rights of participants in research. The inquiry and willing to participate in voluntary research by signing a written