keyword
MENU ▼
Read by QxMD icon Read
search

Heidi Haavik

keyword
https://www.readbyqxmd.com/read/27733823/pairing-voluntary-movement-and-muscle-located-electrical-stimulation-increases-cortical-excitability
#1
Mads Jochumsen, Imran K Niazi, Nada Signal, Rasmus W Nedergaard, Kelly Holt, Heidi Haavik, Denise Taylor
Learning new motor skills has been correlated with increased cortical excitability. In this study, different location of electrical stimulation (ES), nerve, or muscle, was paired with voluntary movement to investigate if ES paired with voluntary movement (a) would increase the excitability of cortical projections to tibialis anterior and (b) if stimulation location mattered. Cortical excitability changes were quantified using motor evoked potentials (MEPs) elicited by transcranial magnetic stimulation (TMS) at varying intensities during four conditions...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27157677/effect-of-spinal-manipulation-on-pelvic-floor-functional-changes-in-pregnant-and-nonpregnant-women-a-preliminary-study
#2
Heidi Haavik, Bernadette A Murphy, Jennifer Kruger
OBJECTIVE: The aim of this study was to investigate whether a single session of spinal manipulation of pregnant women can alter pelvic floor muscle function as measured using ultrasonographic imaging. METHODS: In this preliminary, prospective, comparative study, transperineal ultrasonographic imaging was used to assess pelvic floor anatomy and function in 11 primigravid women in their second trimester recruited via notice boards at obstetric caregivers, pregnancy keep-fit classes, and word of mouth and 15 nulliparous women recruited from a convenience sample of female students at the New Zealand College of Chiropractic...
June 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/27050038/effectiveness-of-chiropractic-care-to-improve-sensorimotor-function-associated-with-falls-risk-in-older-people-a-randomized-controlled-trial
#3
Kelly R Holt, Heidi Haavik, Arier Chi Lun Lee, Bernadette Murphy, C Raina Elley
OBJECTIVE: This study assessed whether 12 weeks of chiropractic care was effective in improving sensorimotor function associated with fall risk, compared with no intervention, in community-dwelling older adults living in Auckland, New Zealand. METHODS: Sixty community-dwelling adults older than 65 years were enrolled in the study. Outcome measures were assessed at baseline, 4 weeks, and 12 weeks and included proprioception (ankle joint position sense), postural stability (static posturography), sensorimotor function (choice stepping reaction time), multisensory integration (sound-induced flash illusion), and health-related quality of life (SF-36)...
May 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/27047694/manipulation-of-dysfunctional-spinal-joints-affects-sensorimotor-integration-in-the-prefrontal-cortex-a-brain-source-localization-study
#4
Dina Lelic, Imran Khan Niazi, Kelly Holt, Mads Jochumsen, Kim Dremstrup, Paul Yielder, Bernadette Murphy, Asbjørn Mohr Drewes, Heidi Haavik
Objectives. Studies have shown decreases in N30 somatosensory evoked potential (SEP) peak amplitudes following spinal manipulation (SM) of dysfunctional segments in subclinical pain (SCP) populations. This study sought to verify these findings and to investigate underlying brain sources that may be responsible for such changes. Methods. Nineteen SCP volunteers attended two experimental sessions, SM and control in random order. SEPs from 62-channel EEG cap were recorded following median nerve stimulation (1000 stimuli at 2...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/26837231/influence-of-subclinical-neck-pain-on-the-ability-to-perform-a-mental-rotation-task-a-4-week-longitudinal-study-with-a-healthy-control-group-comparison
#5
Julianne K Baarbé, Michael W R Holmes, Heather E Murphy, Heidi Haavik, Bernadette A Murphy
OBJECTIVE: Mental rotation of objects and the frame of reference of those objects are critical for executing correct and skillful movements and are important for object recognition, spatial navigation, and movement planning. The purpose of this longitudinal study was to compare the mental rotation ability of those with subclinical neck pain (SCNP) to healthy controls at baseline and after 4 weeks. METHODS: Twenty-six volunteers (13 SCNP and 12 healthy controls) were recruited from a university student population...
January 2016: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/26648859/induction-of-long-term-depression-like-plasticity-by-pairings-of-motor-imagination-and-peripheral-electrical-stimulation
#6
Mads Jochumsen, Nada Signal, Rasmus W Nedergaard, Denise Taylor, Heidi Haavik, Imran K Niazi
Long-term depression (LTD) and long-term potentiation (LTP)-like plasticity are models of synaptic plasticity which have been associated with memory and learning. The induction of LTD and LTP-like plasticity, using different stimulation protocols, has been proposed as a means of addressing abnormalities in cortical excitability associated with conditions such as focal hand dystonia and stroke. The aim of this study was to investigate whether the excitability of the cortical projections to the tibialis anterior (TA) muscle could be decreased when dorsiflexion of the ankle joint was imagined and paired with peripheral electrical stimulation (ES) of the nerve supplying the antagonist soleus muscle...
2015: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/25875332/genome-wide-analysis-of-attention-deficit-hyperactivity-disorder-in-norway
#7
Tetyana Zayats, Lavinia Athanasiu, Ida Sonderby, Srdjan Djurovic, Lars T Westlye, Christian K Tamnes, Tormod Fladby, Heidi Aase, Pål Zeiner, Ted Reichborn-Kjennerud, Per M Knappskog, Gun Peggy Knudsen, Ole A Andreassen, Stefan Johansson, Jan Haavik
BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is a highly heritable neuropsychiatric condition, but it has been difficult to identify genes underlying this disorder. This study aimed to explore genetics of ADHD in an ethnically homogeneous Norwegian population by means of a genome-wide association (GWA) analysis followed by examination of candidate loci. MATERIALS AND METHODS: Participants were recruited through Norwegian medical and birth registries as well as the general population...
2015: PloS One
https://www.readbyqxmd.com/read/25579661/changes-in-h-reflex-and-v-waves-following-spinal-manipulation
#8
Imran Khan Niazi, Kemal S Türker, Stanley Flavel, Mat Kinget, Jens Duehr, Heidi Haavik
This study investigates whether spinal manipulation leads to neural plastic changes involving cortical drive and the H-reflex pathway. Soleus evoked V-wave, H-reflex, and M-wave recruitment curves and maximum voluntary contraction (MVC) in surface electromyography (SEMG) signals of the plantar flexors were recorded from ten subjects before and after manipulation or control intervention. Dependent measures were compared with 2-way ANOVA and Tukey's HSD as post hoc test, p was set at 0.05. Spinal manipulation resulted in increased MVC (measured with SEMG) by 59...
April 2015: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/24259550/a-novel-protocol-to-investigate-motor-training-induced-plasticity-and-sensorimotor-integration-in-the-cerebellum-and-motor-cortex
#9
Julianne Baarbé, Paul Yielder, Julian Daligadu, Hushyar Behbahani, Heidi Haavik, Bernadette Murphy
Our group set out to develop a sensitive technique, capable of detecting output changes from the posterior fossa following a motor acquisition task. Transcranial magnetic stimulation (TMS) was applied over the right cerebellar cortex 5 ms in advance of test stimuli over the left cerebral motor cortex (M1), suppressing test motor-evoked potentials (MEPs) recorded in a distal hand muscle. Ten participants typed the letters Z, D, F, and P in randomized 8-letter sequences for ∼15 min, and 10 participants took part in the control condition...
February 2014: Journal of Neurophysiology
https://www.readbyqxmd.com/read/24035521/alterations-in-cortical-and-cerebellar-motor-processing-in-subclinical-neck-pain-patients-following-spinal-manipulation
#10
COMPARATIVE STUDY
Julian Daligadu, Heidi Haavik, Paul C Yielder, Julianne Baarbe, Bernadette Murphy
OBJECTIVE: The purpose of this study was investigate whether there are alterations in cerebellar output in a subclinical neck pain (SCNP) group and whether spinal manipulation before motor sequence learning might restore the baseline functional relationship between the cerebellum and motor cortex. METHODS: Ten volunteers were tested with SCNP using transcranial magnetic stimulation before and after a combined intervention of spinal manipulation and motor sequence learning...
October 2013: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/22483612/the-role-of-spinal-manipulation-in-addressing-disordered-sensorimotor-integration-and-altered-motor-control
#11
REVIEW
Heidi Haavik, Bernadette Murphy
This review provides an overview of some of the growing body of research on the effects of spinal manipulation on sensory processing, motor output, functional performance and sensorimotor integration. It describes a body of work using somatosensory evoked potentials (SEPs), transcranial magnetic nerve stimulation, and electromyographic techniques to demonstrate neurophysiological changes following spinal manipulation. This work contributes to the understanding of how an initial episode(s) of back or neck pain may lead to ongoing changes in input from the spine which over time lead to altered sensorimotor integration of input from the spine and limbs...
October 2012: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/22343006/the-effects-of-manual-therapy-on-balance-and-falls-a-systematic-review
#12
REVIEW
Kelly R Holt, Heidi Haavik, C Raina Elley
OBJECTIVE: The purpose of this study was to review the scientific literature on the effects of manual therapy interventions on falls and balance. METHODS: This systematic review included randomized and quasi-randomized controlled trials that investigated the effects of manual therapy interventions on falls or balance. Outcomes of interest were rate of falls, number of fallers reported, and measures of postural stability. Data sources included searches through June 2011 of Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, MEDLINE, EMBASE, CINAHL, PsycINFO, Allied and Complimentary Medicine, Current Controlled Trials, Manual Alternative and Natural Therapy Index System, Index to the Chiropractic Literature, National Institutes of Health (USA), and Google Scholar...
March 2012: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/21334540/subclinical-neck-pain-and-the-effects-of-cervical-manipulation-on-elbow-joint-position-sense
#13
Heidi Haavik, Bernadette Murphy
OBJECTIVE: The objectives of this study were to investigate whether elbow joint position sense (JPS) accuracy differs between participants with a history of subclinical neck pain (SCNP) and those with no neck complaints and to determine whether adjusting dysfunctional cervical segments in the SCNP group improves their JPS accuracy. METHOD: Twenty-five SCNP participants and 18 control participants took part in this pre-post experimental study. Elbow JPS was measured using an electrogoniometer (MLTS700, ADInstruments, New Zealand)...
February 2011: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/21334539/fall-risk-profile-and-quality-of-life-status-of-older-chiropractic-patients
#14
COMPARATIVE STUDY
Kelly R Holt, Paul L Noone, Krystal Short, C Raina Elley, Heidi Haavik
OBJECTIVES: The primary aim of this study was to estimate the prevalence of fall risk factors in older chiropractic patients. The secondary aim was to investigate the quality-of-life status of older chiropractic patients and to see whether a history of falling was related to quality-of-life status. METHODS: A cross-sectional study was conducted at 12 chiropractic practices throughout Auckland, New Zealand, and Melbourne, Australia. The study involved gaining a profile of health status, fall history, and fall risk from active chiropractic patients who were 65 years or older...
February 2011: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/20581761/the-cervical-flexion-relaxation-ratio-reproducibility-and-comparison-between-chronic-neck-pain-patients-and-controls
#15
Bernadette A Murphy, Paul W Marshall, Heidi Haavik Taylor
STUDY DESIGN: Reliability study. OBJECTIVE: To determine the reproducibility of the cervical flexion-relaxation ratio (FRR) measured 4 weeks apart in a group of chronic neck pain patients and healthy control group and to compare the FRR between the 2 groups. SUMMARY OF BACKGROUND DATA: The cervical FRR measures the ability of the neck extensor muscles to relax during forward flexion, similar to the lumbar FRR. Its reliability and ability to discriminate neck pain patients from controls has not been investigated...
November 15, 2010: Spine
https://www.readbyqxmd.com/read/20534312/the-effects-of-spinal-manipulation-on-central-integration-of-dual-somatosensory-input-observed-after-motor-training-a-crossover-study
#16
Heidi Haavik Taylor, Bernadette Murphy
OBJECTIVE: This study sought to investigate the influence of spinal dysfunction and spinal manipulation on the response of the central nervous system to a motor training task. METHODS: The dual peripheral nerve stimulation somatosensory evoked potential (SEP) ratio technique was used in 11 subjects before and after a 20-minute typing task and again when the typing task was preceded with cervical spine manipulation. Somatosensory evoked potentials were recorded after median and ulnar nerve stimulation at the wrist (1 millisecond square wave pulse, 2...
May 2010: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/20350670/altered-central-integration-of-dual-somatosensory-input-after-cervical-spine-manipulation
#17
Heidi Haavik Taylor, Bernadette Murphy
OBJECTIVE: The aim of the current study was to investigate changes in the intrinsic inhibitory interactions within the somatosensory system subsequent to a session of spinal manipulation of dysfunctional cervical joints. METHOD: Dual peripheral nerve stimulation somatosensory evoked potential (SEP) ratio technique was used in 13 subjects with a history of reoccurring neck stiffness and/or neck pain but no acute symptoms at the time of the study. Somatosensory evoked potentials were recorded after median and ulnar nerve stimulation at the wrist (1 millisecond square wave pulse, 2...
March 2010: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/20350669/the-effect-of-spinal-manipulation-on-the-efficacy-of-a-rehabilitation-protocol-for-patients-with-chronic-neck-pain-a-pilot-study
#18
RANDOMIZED CONTROLLED TRIAL
Bernadette Murphy, Heidi Haavik Taylor, Paul Marshall
OBJECTIVE: This pilot study sought to (1) determine whether a 4-week period of chiropractic care improved the ability of chronic neck pain patients to respond to an 8-week period of exercise rehabilitation and (2) determine effect sizes to use in sample size calculations for future studies. METHODS: Twenty male and female participants (age, 43 +/- 12 years; body mass index, 27 +/- 4.5 [mean +/- SD]) with chronic nonspecific neck pain were randomized into either a chiropractic care combined with exercise or an exercise only group...
March 2010: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/19362232/interexaminer-reliability-of-a-leg-length-analysis-procedure-among-novice-and-experienced-practitioners
#19
RANDOMIZED CONTROLLED TRIAL
Kelly R Holt, David G Russell, Nicholas J Hoffmann, Benjamin I Bruce, Paul M Bushell, Heidi Haavik Taylor
OBJECTIVE: The purpose of this study was to evaluate the interexaminer reliability of a leg length analysis protocol between an experienced chiropractor and an inexperienced chiropractic student who has undergone an intensive training program. METHODS: Fifty participants, aged from 18 to 55 years, were recruited from the New Zealand College of Chiropractic teaching clinic. An experienced chiropractor and a final-year chiropractic student were the examiners. Participants were examined for leg length inequality in the prone straight leg and flexed knee positions by each of the examiners...
March 2009: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/18328937/altered-sensorimotor-integration-with-cervical-spine-manipulation
#20
Heidi Haavik Taylor, Bernadette Murphy
OBJECTIVE: This study investigates changes in the intrinsic inhibitory and facilitatory interactions within the sensorimotor cortex subsequent to a single session of cervical spine manipulation using single- and paired-pulse transcranial magnetic stimulation protocols. METHOD: Twelve subjects with a history of reoccurring neck pain participated in this study. Short interval intracortical inhibition, short interval intracortical facilitation (SICF), motor evoked potentials, and cortical silent periods (CSPs) were recorded from the abductor pollicis brevis and the extensor indices proprios muscles of the dominant limb after single- and paired-pulse transcranial magnetic stimulation of the contralateral motor cortex...
February 2008: Journal of Manipulative and Physiological Therapeutics
keyword
keyword
46846
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"