Attentional Focus on Muscle Activity and Blood during Knee Extension and Imagined Knee Extension using Ultrasound Doppler

Effect of Attentional Focus on Muscle Activity and Blood Flow during Knee Extension and Imagined Knee Extension using Ultrasound Doppler

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20220830004

Enrollment

Registered

2022-08-30

Start date

2022-09-05

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

1.Healthy adults 1.Motor imagery 2.Muscle activity 3.Attentional focus 4.Blood flow 5.Ultrasound doppler

Interventions

Participants sit on an adjustable chair with feet rest on the floor. Then, they perform extension of the knee.,Participants sit on an adjustable chair with one foot rest on the floor and another one i

Diagnostic,Diagnostic,Diagnostic

Active knee extension,Eccentric contraction of knee extensor,Isometric knee extension

Eligibility

Sex/Gender

All

Age

20 Years to 30 Years

Inclusion criteria

Inclusion criteria: 1.Body mass index is 18.5 - 22.9 kg/m2 2.Normal ROM of knee extension 3.Normal communication in Thai language

Exclusion criteria

Exclusion criteria: -MMSE is lesser than cut point -MIQ-R is lesser than 20 -Neurological and orthopedics problems -DM and HT -Smoking and drinking alcohol -Pregnancy

Design outcomes

Primary

Measure	Time frame
Muscle activity before and after perform knee extension Muscle size	—

Secondary

Measure	Time frame
Blood flow before and after perform knee extension Flow rate	—

Countries

Thailand

Contacts

Public Contactkanokwan Srisupornkornkool

Naresuan University

kanokwans@nu.ac.th055966374

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026