Medicine and Health Sciences Commons^™

Identifying The Neural Correlates Of Anticipatory Postural Control: A Novel Fmri Paradigm, Jo Armour Smith, Rongwen Tain, Kelli G. Sharp, Laura M. Glynn, Linda R. Van Dillen, Korinne Henslee, Jesse V. Jacobs, Steven C. Cramer

Physical Therapy Faculty Articles and Research

Altered postural control in the trunk/hip musculature is a characteristic of multiple neurological and musculoskeletal conditions. Previously it was not possible to determine if altered cortical and subcortical sensorimotor brain activation underlies impairments in postural control. This study used a novel fMRI-compatible paradigm to identify the brain activation associated with postural control in the trunk and hip musculature. BOLD fMRI imaging was conducted as participants performed two versions of a lower limb task involving lifting the left leg to touch the foot to a target. For the supported leg raise (SLR) the leg is raised from the knee while the …

Task-Invariance And Reliability Of Anticipatory Postural Adjustments In Healthy Young Adults, Jo Armour Smith, Niklas König Ignasiak, Jesse V. Jacobs

Physical Therapy Faculty Articles and Research

Background

Anticipatory postural adjustments (APAs) occur in the trunk during tasks such as rapid limb movement and are impaired in individuals with musculoskeletal and neurological dysfunction. To understand APA impairment, it is important to first determine if APAs can be measured reliably and which characteristics of APAs are task-invariant.

Research question

What is the test-retest reliability of latency, amplitude and muscle activation patterns (synergies) of trunk APAs during arm-raise and leg-raise tasks, and to what extent are these APA characteristics invariant across tasks at the individual and group levels?

Methods

15 young adults (mean age: 23.7 (±3.2) years) performed six …

Test-Retest Reliability And Minimum Detectable Change For Various Frontal Plane Projection Angles During Dynamic Tasks, David M. Werner, Stephanie Di Stasi, Cara L. Lewis, Joaquin Alberto Barrios

Physical Therapy Faculty Publications

Objective: Establish between-day test-retest reliability metrics for 2-dimensional frontal plane projection angles (FPPAs) during the lateral step-down (LSD), single-limb squat (SLS), single-limb landing (SLL), and drop vertical jump (DVJ).

Design: Test-retest reliability study

Setting: University laboratory

Participants: 20 healthy adults (12 female, age = 23.60±1.93 years old, body mass index = 24.26±2.54 kg/m²) were tested on 2 separate occasions 7-14 days apart.

Main Outcome Measures: Intraclass correlation coefficients (ICC), standard errors of the measurement (SEM), and minimal detectable change (MDC) values across the LSD, SLS, SLL, and DVJ for the following body region variables: trunk, trunk on pelvis, …

Differences In Trunk And Hip Flexion/Extension Strength, Jasmin Brown

Electronic Theses and Dissertations

Context: The definition of the “core” within the literature is misconstrued: some researchers believe the core only involves muscles of the trunk while others believe it also includes muscles of the hip. Core strength tests typically include exercises that activate hip flexors and extensors without a firm definition of the “core” including the muscles of the hip. Purpose: The purpose of this study was to differentiate between the strength of the trunk and hip during flexion and extension.

Methods: Participants included 28 Division I collegiate athletes from a single university (12 males, 16 females, height (in.) = 69.14 ± 4.81, …

Trunk-Pelvis Coordination During Turning: A Cross Sectional Study Of Young Adults With And Without A History Of Low Back Pain, Jo Armour Smith, Kornelia Kulig

Physical Therapy Faculty Articles and Research

Background

During steady-state locomotion, symptomatic individuals with low back pain demonstrate reduced ability to modulate coordination between the trunk and the pelvis in the axial plane. It is unclear if this is also true during functional locomotor perturbations such as changing direction, or if this change in coordination adaptability persists between symptomatic episodes. The purpose of this study was to compare trunk-pelvis coordination during walking turns in healthy individuals and asymptomatic individuals with a history of low back pain.

Methods

Participants performed multiple ipsilateral turns. Axial plane inter-segmental coordination and stride-to-stride coordination variability were quantified using the vector coding technique. …

Central And Peripheral Weight Gain Affect Trunk Kinematics And Lower-Extremity Muscle Activation Differently During Sit-To-Stand, Michelle Christine Walaszek

Theses and Dissertations--Kinesiology and Health Promotion

Background: Obesity-induced alterations in biomechanics and muscle recruitment during activities of daily living, such as sit-to-stand (STS) are often attributed to increases in adipose tissue (AT) mass. Central or peripheral distribution of AT may differently affect biomechanics and muscle recruitment.

Methods: Fifteen healthy, normal weight (BMI 22.4 ± 1.9 kg/m², 24.1 ± 4.2 years) subjects volunteered. External loads equivalent to a 5 kg/m² BMI increase were applied in three conditions: unloaded (UN), centrally loaded (CL), and peripherally loaded (PL). Subjects completed three successful STS movements in a backless chair under each load condition in random order. Motion …

The Core: What It Is And What It Is Not, Rob Marc Orr

Rob Marc Orr

No abstract provided.

A Review Of Recent Perspectives On Biomechanical Risk Factors Associated With Anterior Cruciate Ligament Injury, Gerwyn Hughes

Kinesiology (Formerly Exercise and Sport Science)

There is considerable evidence to support a number of biomechanical risk factors associatiated with non-contact anterior cruciate ligament (ACL) injury. This paper aimed to review these biomechanical risk factors and highlight future directions relating to them. Current perspectives investigating trunk position and relationships between strength, muscle activity and biomechanics during landing/cutting highlight the importance of increasing hamstring muscle force during dynamic movements through altering strength, muscle activity, muscle length and contraction velocity. In particular, increased trunk flexion during landing/cutting and greater hamstring strength are likely to increase hamstring muscle force during landing and cutting which have been associated with reduced …

Effect Of Head And Limb Orientation On Trunk Muscle Activation During Abdominal Hollowing In Chronic Low Back Pain, Kevin Parfrey, Sean G. Gibbons, Eric J. Drinkwater, David G. Behm

Research outputs 2014 to 2021

Background: Individuals with chronic low back pain (CLBP) have altered activations patterns of the anterior trunk musculature when performing the abdominal hollowing manœuvre (attempt to pull umbilicus inward and upward towards the spine). There is a subgroup of individuals with CLBP who have high neurocognitive and sensory motor deficits with associated primitive reflexes (PR). The objective of the study was to determine if orienting the head and extremities to positions, which mimic PR patterns would alter anterior trunk musculature activation during the hollowing manoeuvre. Methods. This study compared surface electromyography (EMG) of bilateral rectus abdominis (RA), external oblique (EO), and …

Lower Extremity Kinematics And Kinetics When Landing From Unloaded And Loaded Jumps, Ina Janssen, Jeremy Sheppard, Andrew Dingley, Dale Chapman, Wayne Spratford

Research outputs 2012

Countermovement jumps loaded with a weighted vest are often used for the training of lower body power to improve jump performance. However, it is currently unknown how this added load affects the lower extremity kinematics and kinetics, in particular whether this results in an increased injury risk. Therefore, the purpose of this investigation was to determine how lower extremity kinematics and kinetics during landing are affected by loaded jumps as demonstrated in a volleyball block jump landing. Ten elite male volleyball players performed block jump landings in an unloaded and loaded (9.89 kg) condition. Kinematic and kinetic landing data from …

Giant Unresectable Lymphangioma Of The Trunk Managed Via Intra-Tumour Injections Of Bleomycin, Umair Khalid, Saulat Hasnain Fatimi, Taimur Saleem

Section of Cardiothoracic Surgery

Surgical excision was once considered the mainstay of treatment for lymphangiomas. However, that paradigm is now changing with sclerotherapy emerging as a viable alternative. A 22-year-old girl presented with a mucopurulent and painful discharge from an extensive wound in the trunk. Chest roentogram showed a large soft tissue abnormality with multiple calcifications in the right upper abdomen and lower thorax. Magnetic resonance imaging revealed an extensive lobulated mass measuring 27 x 19 cm. Due to the extensive involvement of tissues, surgical excision did not appear to be a favourable option in this case. Local injections of bleomycin were successfully administered; …

Kinematic And Kinetic Differences In The Trunk, Pelvis, And Lower Extremities In Women With And Without Patellofemoral Pain When Descending Stairs, H. James Phillips

Seton Hall University Dissertations and Theses (ETDs)

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