Background And Purpose: Whereas motor skills of the untrained upper limb (UL) can improve following practice with the other UL, it has yet to be determined if an UL motor skill can improve following practice of that skill with the lower limb (LL).
Methods: Forty-five healthy subjects randomly participated in a 10-minute single-session intervention of (1) practicing 50 reaching movement (RM) sequences with the non-dominant left LL toward light switches (LL group); or (2) observing the identical 50 light switches sequences (Switches Observation (SO) group); or (3) observing nature films (Nature Observation (NO) group). RM sequence performance with the left UL toward the light switches was tested before and immediately after the intervention and retested after 24 h.
Action observation (AO) can improve motor performance in humans, probably the human mirror neuron system. In addition, there is some evidence that transcranial direct current stimulation (tDCS) can improve motor performance. However, it is yet to be determined whether AO combined with tDCS has an enhanced effect on motor performance.
View Article and Find Full Text PDFShoulder Elbow
February 2023
Background: Little information exists to guide the choice of exercise for regaining shoulder range of motion (ROM). The purpose of this study was to compare the maximal ROM reached, pain and difficulty associated with 4 commonly prescribed exercises.
Methods: Forty (9 females) patients with various shoulder disorders and a limited flexion ROM performed 4 exercises for regaining shoulder flexion ROM in a randomized order.
The effects of action observation (AO) on motor performance can be modulated by instruction. The effects of two top-down aspects of the instruction on motor performance have not been fully resolved: those related to attention to the observed task and the incorporation of motor imagery (MI) during AO. In addition, the immediate vs.
View Article and Find Full Text PDFJ Speech Lang Hear Res
December 2019
Purpose Few studies have assessed listening effort (LE)-the cognitive resources required to perceive speech-among populations with intact hearing but reduced availability of cognitive resources. Attention/deficit/hyperactivity disorder (ADHD) is theorized to restrict attention span, possibly making speech perception in adverse conditions more challenging. This study examined the effect of ADHD on LE among adults using a behavioral dual-task paradigm (DTP).
View Article and Find Full Text PDFContext: Altered movement patterns, including increased frontal-plane knee movement and decreased sagittal-plane hip and knee movement, have been associated with several knee disorders. Nevertheless, the ability of clinicians to visually detect such altered movement patterns during high-speed athletic tasks is relatively unknown.
Objective: To explore the association between visual assessment and 2-dimensional (2D) analysis of frontal-plane knee movement and sagittal-plane hip and knee movement during a jump-landing task among healthy female athletes.
Objective: To explore the association between ankle dorsiflexion (DF) range of motion (ROM), and hip abductor muscle strength, to visually-assessed quality of movement during jump-landing.
Design: Cross-sectional.
Setting: Gymnasium of participating teams.
The aim of this study was to test the effects of kilohertz frequency alternating current (KHFAC) surface stimulation applied to the ulnar nerve on force and myoelectrical activity of the abductor digiti minimi (ADM) muscle. Eighteen healthy volunteers (age: 27.6 ± 7.
View Article and Find Full Text PDFJ Orthop Sports Phys Ther
November 2016
Study Design Controlled laboratory study. Background Altered hip and knee kinematics have been associated with several knee disorders, including anterior cruciate ligament tear, patellofemoral pain, and iliotibial band syndrome. Limited ankle dorsiflexion (DF) range of motion (ROM), which has been linked with some of these disorders, has also been associated with altered knee kinematics.
View Article and Find Full Text PDFRabin, A, Portnoy, S, and Kozol, Z. The association between visual assessment of quality of movement and three-dimensional analysis of pelvis, hip, and knee kinematics during a lateral step down test. J Strength Cond Res 30(11): 3204-3211, 2016-Altered movement patterns including contralateral pelvic drop, increased hip adduction, knee abduction, and external rotation have been previously implicated in several lower extremity pathologies.
View Article and Find Full Text PDFJ Strength Cond Res
May 2017
Rabin, A and Kozol, Z. Utility of the overhead squat and forward arm squat in screening for limited ankle dorsiflexion. J Strength Cond Res 31(5): 1251-1258, 2017-Limited ankle dorsiflexion (DF) range of motion (ROM) has been implicated in several lower extremity disorders.
View Article and Find Full Text PDFObjective: Determine the interrater reliability of a new real-time assessment of faulty movement patterns during a jump-landing task.
Design: Interrater reliability study.
Setting: Human movement laboratory.
Purpose : To report the outcomes of a physiotherapy management approach for de Quervain's disease (DQD), a common hand disorder for which evidence for physiotherapy management is lacking, in 4 consecutive patients with DQD. Methods : Participants underwent a median of eight treatment sessions, consisting of mobilizations with movement, eccentric muscle training, and high-voltage electrical stimulation. Outcomes were assessed with an 11-point numeric pain rating scale (NPRS; range 1-10) and the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH; range 0%-100%).
View Article and Find Full Text PDFBackground: Achilles tendinopathy (AT) is a prevalent condition among runners and military personnel. Although ankle dorsiflexion (DF) range of motion (ROM) as measured with the knee bent has not been previously associated with AT, the literature concerning its role is limited. In addition, the role of lower extremity movement pattern in the pathogenesis of AT has not been studied prospectively.
View Article and Find Full Text PDFStudy Design: Cross-sectional.
Objective: To determine what physical measures are associated with visually assessed quality of movement among patients with patellofemoral pain (PFP).
Background: An altered movement pattern has been implicated as a risk factor for PFP.
Context: In clinical practice, the range of motion (ROM) of the non involved side often serves as the reference for comparison with the injured side. Previous investigations of non-weight-bearing (NWB) ankle dorsiflexion (DF) ROM measurements have indicated bilateral symmetry for the most part. Less is known about ankle DF measured under weight-bearing (WB) conditions.
View Article and Find Full Text PDFContext: Lower extremity movement patterns have been implicated as a risk factor for various knee disorders. Ankle-dorsiflexion (DF) range of motion (ROM) has previously been associated with a faulty movement pattern among healthy female participants.
Objective: To determine the association between ankle DF ROM and the quality of lower extremity movement during the lateral step-down test among healthy male participants.
J Am Podiatr Med Assoc
March 2013
Background: Ankle dorsiflexion range of motion has been measured in weightbearing and nonweightbearing conditions. The different measurement conditions may contribute to inconsistent conclusions regarding the role of ankle dorsiflexion in several pathologic conditions. The purpose of this study was to examine the relationship between ankle dorsiflexion range of motion as measured in weightbearing and nonweightbearing conditions.
View Article and Find Full Text PDFStudy Design: Cross-sectional.
Objective: To determine the association between hip and ankle range-of-motion measures, as well as measures of hip muscle strength, with measures of quality of lower extremity movement, as assessed visually during the lateral step-down test in healthy women.
Background: Altered lower extremity movement pattern consisting of excessive femoral adduction and internal rotation, leading to excessive knee valgus alignment, is associated with increased risk of knee ligament injury, as well as patellofemoral pain syndrome.