Blood Flow Restriction Training Combined With Abdominal draw-in Maneuver on Transverse Abdominis Strengthening

NCT ID: NCT04270695

Last Updated: 2023-08-21

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 34 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-03-03
• Study Completion Date: 2021-07-09

Brief Summary

This study expects to provide a new alternative way to improve the muscle activation, strength and activation of transverse abdominis in abdominal draw-in maneuver combined with blood flow restriction.

Detailed Description

The transverse abdominis (TrA) is the deepest muscle layer of lateral and anterior abdominal wall and also known as a significant component of core stability. Abdominal draw-in maneuver (ADIM) is the main for the strengthening of the deep muscle, however, sufficient activation of TrA by ADIM is limited. Blood flow restriction (BFR) training is a technique combined with low intensity exercise that produces similar results to high intensity training. However, there is few evidences for BFR training on core muscles.

Healthy adults (age ranged 18-34 years and BMI between 18.5~24.99) were randomly recruited in the study. For the intervention group, an inflatable cuff (14 cm in width * 84 cm in length) is warped around abdominal muscles below ribs which may cause to at least 60% restriction of blood flow detected by Power Doppler ultrasonography. All participants are instructed to perform ADIM both condition of BFR and BFR-free twice a week, for six weeks. Outcome measurements include Double leg lowering test (DLLT) for muscle strength, brightness mode ultrasound (USD) for muscle hypertrophy and electromyography (EMG) muscle activation. The same physical therapist will do the measurement at first week, third week and the sixth week.

Conditions

Blood Flow Restriction; draw-in Maneuver; Transverse Abdominis

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: OTHER
• Blinding Strategy: SINGLE

Study Groups

blood flow restriction

An inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs which may cause to at least 60% restriction of blood flow detected by Power Doppler ultrasonography. All participants are instructed to perform abdominal draw-in maneuver both condition of BFR and BFR-free twice a week, for six weeks.

Group Type: EXPERIMENTAL

blood flow restriction

Intervention Type: BEHAVIORAL

an inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs which may cause to at least 60% restriction of blood flow detected by Power Doppler ultrasonography. All participants are instructed to perform abdominal draw-in maneuver.

sham blood flow restriction

an inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs without inflation. All participants are instructed to perform abdominal draw-in maneuver.

Group Type: SHAM_COMPARATOR

sham blood flow restriction

Intervention Type: BEHAVIORAL

an inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs without inflation. All participants are instructed to perform abdominal draw-in maneuver.

Interventions

blood flow restriction

an inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs which may cause to at least 60% restriction of blood flow detected by Power Doppler ultrasonography. All participants are instructed to perform abdominal draw-in maneuver.

Intervention Type: BEHAVIORAL

sham blood flow restriction

an inflatable cuff (14 cm in width \* 84 cm in length) is warped around abdominal muscles below ribs without inflation. All participants are instructed to perform abdominal draw-in maneuver.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Healthy subjects
• 20~35 years old
• BMI 18.5~24.99

Exclusion Criteria

• Hypertension
• Have cardio-vascular disease
• Used to have abdominal operation or wound
• Have spinal surgeries or deformities
• Known neuromuscular or joint disease
• Pregnant

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

China Medical University Hospital

OTHER

Sponsor Role: lead

Responsible Party

Yueh-Ling Hsieh

professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Yueh-Ling Hsieh

Role: STUDY_DIRECTOR

professor

Locations

China Medical University

Taichung, , Taiwan

Countries

Taiwan

Provided Documents

Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

CRREC-109-007

Identifier Type: -

Identifier Source: org_study_id