Effects of a Gluteus Squeeze with Real-time Visual Biofeedback on Hip Extensor Muscle EMG Activity during Small Knee Bending

2021 ◽  
Vol 1 (1) ◽  
pp. 17-24
Author(s):  
Ah-Reum Oh ◽  
Jae-Seop Oh ◽  
Won-Gyu Yoo ◽  
Duk-Hyun An ◽  
Won-Nyeong Cho
Keyword(s):  
Real Time ◽  
Extensor Muscle ◽  
Emg Activity ◽  
Visual Biofeedback

scholarly journals Effect of real-time ultrasound imaging for biofeedback on trunk muscle contraction in healthy subjects: a preliminary study

2020 ◽  
Author(s):  
Shanshan Lin ◽  
Bo Zhu ◽  
Yiyi Zheng ◽  
Guozhi Huang ◽  
Qing Zeng ◽  
...  
Keyword(s):  
Muscle Contraction ◽  
Real Time ◽  
Ultrasound Imaging ◽  
Healthy Subjects ◽  
Transversus Abdominis ◽  
Trunk Muscles ◽  
Control Group ◽  
Visual Biofeedback ◽  
Preliminary Study ◽  
Experimental Group

Abstract Background: Real-time ultrasound imaging (RUSI) has been increasingly used as a form of biofeedback when instructing and re-training muscle contraction. However, the effectiveness of the RUSI on a single sustained contraction of the lumbar multifidus (LM) and transversus abdominis (TrA) has rarely been reported. This preliminary study aimed to determine if the use of RUSI, as visual biofeedback, could enhance the ability of activation and continuous contraction of the trunk muscles including LM and TrA.Methods: Forty healthy individuals were included and randomly assigned into the experimental group and control group. All subjects performed a preferential activation of the LM and/or TrA (maintained the constraction of LM and/or TrA for 30 seconds and then relaxed for two minutes), while those in the experimental group also received visual feedback provided by RUSI. The thickness of LM and/or TrA at rest and during contraction (Tc-max, T15s, and T30s) were extracted and recorded. The experiment was repeated three times.Results: No significant differences were found in the thickness of LM at rest (P > 0.999), Tc-max (P > 0.999), and T15s (P = 0.414) between the two groups. However, the ability to recruit LM muscle contraction differed between groups at T30s (P = 0.006), with subjects in the experimental group that received visual ultrasound biofeedback maintaining a relative maximum contraction. Besides, no significant differences were found in the TrA muscle thickness at rest (P > 0.999) and Tc-max (P > 0.999) between the two groups. However, significant differences of contraction thickness were found at T15s (P = 0.031) and T30s (P = 0.010) between the two groups during the Abdominal Drawing-in Maneuver (ADIM), with greater TrA muscle contraction thickness in the experimental group.Conclusions: RUSI can be used to provide visual biofeedback, which can promote continuous contraction, and improve the ability to activate the LM and TrA muscles in healthy subjects.

Development of real time abdominal compression force monitoring and visual biofeedback system

2018 ◽  
Vol 63 (5) ◽  
pp. 055014
Author(s):  
Tae-Ho Kim ◽  
Siyong Kim ◽  
Dong-Su Kim ◽  
Seong-Hee Kang ◽  
Min-Seok Cho ◽  
...  
Keyword(s):  
Real Time ◽  
Compression Force ◽  
Abdominal Compression ◽  
Visual Biofeedback ◽  
Biofeedback System ◽  
Force Monitoring

Biomechanical Response to External Biofeedback During Functional Tasks in Individuals With Chronic Ankle Instability

2021 ◽  
Author(s):  
Danielle M. Torp ◽  
Abbey C. Thomas ◽  
Tricia Hubbard-Turner ◽  
Luke Donovan
Keyword(s):  
Real Time ◽  
Plantar Pressure ◽  
Ankle Instability ◽  
Static Balance ◽  
Eyes Closed ◽  
Visual Biofeedback ◽  
Time Integral ◽  
Pressure Time ◽  
Eyes Open ◽  
Functional Task

Context Altered biomechanics displayed by individuals with chronic ankle instability (CAI) is a possible cause of recurring injuries and posttraumatic osteoarthritis. Current interventions are unable to modify aberrant biomechanics, leading to research efforts to determine if real-time external biofeedback can result in changes. Objective To determine the real-time effects of visual and auditory biofeedback on functional-task biomechanics in individuals with CAI. Design Crossover study. Setting Laboratory. Patients or Other Participants Nineteen physically active adults with CAI (7 men, 12 women; age = 23.95 ± 5.52 years, height = 168.87 ± 6.94 cm, mass = 74.74 ± 15.41 kg). Intervention(s) Participants randomly performed single-limb static balance, step downs, lateral hops, and forward lunges during a baseline and 2 biofeedback conditions. Visual biofeedback was given through a crossline laser secured to the dorsum of the foot. Auditory biofeedback was given through a pressure sensor placed under the lateral foot and connected to a buzzer that elicited a noise when pressure exceeded the set threshold. Cues provided during the biofeedback conditions were used to promote proper biomechanics during each task. Main Outcome Measure(s) We measured the location of center-of-pressure (COP) data points during balance with eyes open and eyes closed for each condition. Plantar pressure in the lateral column of the foot during functional tasks was extracted. Secondary outcomes of interest were COP area and velocity, time to boundary during static balance, and additional plantar-pressure measures. Results Both biofeedback conditions reduced COP in the anterolateral quadrant while increasing COP in the posteromedial quadrant of the foot during eyes-open balance. Visual biofeedback increased lateral heel pressure and the lateral heel and midfoot pressure-time integral during hops. The auditory condition produced similar changes during the eyes-closed trials. Auditory biofeedback increased heel pressure during step downs and decreased the lateral forefoot pressure-time integral during lunges. Conclusions Real-time improvements in balance strategies were observed during both external biofeedback conditions. Visual and auditory biofeedback appeared to effectively moderate different functional-task biomechanics.

Effect of Visual Biofeedback Training in Real Time on Buttock Pressure and Pelvic Tilting Angles of Hemiplegic Patients During Sitting

2017 ◽  
Vol 24 (2) ◽  
pp. 66-75
Author(s):  
Min-su Cho ◽  
◽  
Kyue-nam Park ◽  
Sung-dae Choung ◽  
Oh-yun Kwon
Keyword(s):  
Real Time ◽  
Biofeedback Training ◽  
Visual Biofeedback

Comparison of Mirror, Raw Video, and Real-Time Visual Biofeedback for Training Toe-Out Gait in Individuals With Knee Osteoarthritis

2014 ◽  
Vol 95 (10) ◽  
pp. 1912-1917 ◽  
Author(s):  
Michael A. Hunt ◽  
Judit Takacs ◽  
Katie Hart ◽  
Erika Massong ◽  
Keri Fuchko ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Real Time ◽  
Visual Biofeedback

scholarly journals Effect of real-time ultrasound imaging for biofeedback on trunk muscle contraction in healthy subjects: a preliminary study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shanshan Lin ◽  
Bo Zhu ◽  
Yiyi Zheng ◽  
Guozhi Huang ◽  
Qi Zeng ◽  
...  
Keyword(s):  
Muscle Contraction ◽  
Real Time ◽  
Ultrasound Imaging ◽  
Healthy Subjects ◽  
Transversus Abdominis ◽  
Trunk Muscles ◽  
Control Group ◽  
Visual Biofeedback ◽  
Preliminary Study ◽  
Experimental Group

Abstract Background Real-time ultrasound imaging (RUSI) has been increasingly used as a form of biofeedback when instructing and re-training muscle contraction. However, the effectiveness of the RUSI on a single sustained contraction of the lumbar multifidus (LM) and transversus abdominis (TrA) has rarely been reported. This preliminary study aimed to determine if the use of RUSI, as visual biofeedback, could enhance the ability of activation and continuous contraction of the trunk muscles including LM and TrA. Methods Forty healthy individuals were included and randomly assigned into the experimental group and control group. All subjects performed a preferential activation of the LM and/or TrA (maintained the constraction of LM and/or TrA for 30 s and then relaxed for 2 min), while those in the experimental group also received visual feedback provided by RUSI. The thickness of LM and/or TrA at rest and during contraction (Tc-max, T15s, and T30s) were extracted and recorded. The experiment was repeated three times. Results No significant differences were found in the thickness of LM at rest (P > 0.999), Tc-max (P > 0.999), and T15s (P = 0.414) between the two groups. However, the ability to recruit LM muscle contraction differed between groups at T30s (P = 0.006), with subjects in the experimental group that received visual ultrasound biofeedback maintaining a relative maximum contraction. Besides, no significant differences were found in the TrA muscle thickness at rest (P > 0.999) and Tc-max (P > 0.999) between the two groups. However, significant differences of contraction thickness were found at T15s (P = 0.031) and T30s (P = 0.010) between the two groups during the Abdominal Drawing-in Maneuver (ADIM), with greater TrA muscle contraction thickness in the experimental group. Conclusions RUSI can be used to provide visual biofeedback, which can promote continuous contraction, and improve the ability to activate the LM and TrA muscles in healthy subjects.

scholarly journals Effect of Real-Time Ultrasound Imaging for Biofeedback on Trunk Muscle Contraction in Healthy Subjects: A Preliminary Study

2020 ◽  
Author(s):  
Shanshan Lin ◽  
Bo Zhu ◽  
Yiyi Zheng ◽  
Guozhi Huang ◽  
Qing Zeng ◽  
...  
Keyword(s):  
Muscle Contraction ◽  
Real Time ◽  
Ultrasound Imaging ◽  
Healthy Subjects ◽  
Clinical Medicine ◽  
Transversus Abdominis ◽  
Trunk Muscles ◽  
Visual Biofeedback ◽  
Preliminary Study ◽  
Experimental Group

Abstract Background: Real-time ultrasound imaging (RUSI) has been increasingly used in clinical medicine as a form of biofeedback when instructing and re-training muscle contraction. However, the effectiveness of the RUSI on a single sustained contraction of the lumbar multifidus (LM) and transversus abdominis (TrA) has rarely been reported. This preliminary study aimed to determine if the use of RUSI as visual biofeedback enhances the ability of activation and continuous contraction of the trunk muscles including LM and TrA.Methods: Forty healthy individuals were included and assigned to 2 groups. All subjects received clinical instruction in how to perform a preferential activation of the LM and TrA, while subjects in the experimental group also received visual feedback (watched the LM and TrA contraction) provided by RUSI. All subjects maintained the LM and TrA contraction for 30 seconds, and the thickness of LM and TrA at rest and during contraction (Tc-max, T15s, and T30s) were extracted and recorded.Results: Non-significant differences were found in the thickness of LM at rest (P > 0.999), Tc-max (P > 0.999), and T15s (P = 0.414) between groups. However, the ability to recruit LM muscle contraction differed between groups at T30s (P = 0.006), with subjects in the experimental group that received visual ultrasound biofeedback maintaining a relative maximum contraction. Besides, there were also no significant differences in the TrA muscle thickness at rest (P > 0.999) and Tc-max (P > 0.999) between groups. While, significant differences of contraction thickness were found at T15s (P = 0.031) and T30s (P = 0.010) between groups during the ADIM, with greater TrA muscle contraction thickness in the experimental group.Conclusions: RUSI can be used to provide visual biofeedback, which can promote continuous contraction efficiency, improve performance, and retention in the ability to activate the LM and TrA muscles in healthy subjects.

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