keyword
MENU ▼
Read by QxMD icon Read
search

Heidi Haavik

keyword
https://www.readbyqxmd.com/read/29349480/posture-modulates-the-sensitivity-of-the-h-reflex
#1
Serpil Cecen, Imran Khan Niazi, Rasmus Wiberg Nedergaard, Alice Cade, Kathryn Allen, Kelly Holt, Heidi Haavik, Kemal S Türker
The effect of body posture on the human soleus H-reflex via electrical stimulation of the tibial nerve at the popliteal fossa was studied. All parameters that may influence the reflex were controlled stringently. H-reflexes were elicited in three different body postures while keeping the level of background muscle activation to a minimum. The H-reflex curve relative to the M-wave curve did not change significantly in any of the body postures. However, the maximal H-reflex amplitude significantly increased in the prone position compared with the sitting (p = 0...
January 18, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29327170/the-effects-of-a-single-session-of-spinal-manipulation-on-strength-and-cortical-drive-in-athletes
#2
Thomas Lykke Christiansen, Imran Khan Niazi, Kelly Holt, Rasmus Wiberg Nedergaard, Jens Duehr, Kathryn Allen, Paul Marshall, Kemal S Türker, Jan Hartvigsen, Heidi Haavik
PURPOSE: The primary purpose of this study was to investigate whether a single session of spinal manipulation (SM) increases strength and cortical drive in the lower limb (soleus muscle) of elite Taekwondo athletes. METHODS: Soleus-evoked V-waves, H-reflex and maximum voluntary contraction (MVC) of the plantar flexors were recorded from 11 elite Taekwondo athletes using a randomized controlled crossover design. Interventions were either SM or passive movement control...
January 11, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29026942/the-effects-of-subclinical-neck-pain-on-sensorimotor-integration-following-a-complex-motor-pursuit-task
#3
Danielle Andrew, Paul Yielder, Heidi Haavik, Bernadette Murphy
Recurrent subclinical neck pain (SCNP) may be associated with neural plastic changes in sensory processing and sensorimotor integration (SMI); however, its impact on motor learning has not been investigated. The aim of this study was to investigate whether SCNP alters neural markers of SMI during a complex motor acquisition task as compared to a healthy control group. Peripheral N9, spinal N13, brainstem N18, and cortical N20, P25, N24 and N30 early somatosensory evoked potentials (SEPs) were recorded following median nerve stimulation for 24 participants (12 control and 12 SCNP) before and after a 10-min tracing motor task intervention...
October 12, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28196631/effects-of-12-weeks-of-chiropractic-care-on-central-integration-of-dual-somatosensory-input-in-chronic-pain-patients-a-preliminary-study
#4
Heidi Haavik, Imran Khan Niazi, Kelly Holt, Bernadette Murphy
OBJECTIVE: The purpose of this preliminary study was to assess whether the dual somatosensory evoked potential (SEP) technique is sensitive enough to measure changes in cortical intrinsic inhibitory interactions in patients with chronic neck or upper extremity pain and, if so, whether changes are associated with changes in pain scores. METHODS: The dual peripheral nerve stimulation SEP ratio technique was used for 6 subjects with a history of chronic neck or upper limb pain...
March 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28025542/impact-of-spinal-manipulation-on-cortical-drive-to-upper-and-lower-limb-muscles
#5
Heidi Haavik, Imran Khan Niazi, Mads Jochumsen, Diane Sherwin, Stanley Flavel, Kemal S Türker
This study investigates whether spinal manipulation leads to changes in motor control by measuring the recruitment pattern of motor units in both an upper and lower limb muscle and to see whether such changes may at least in part occur at the cortical level by recording movement related cortical potential (MRCP) amplitudes. In experiment one, transcranial magnetic stimulation input-output (TMS I/O) curves for an upper limb muscle (abductor pollicus brevis; APB) were recorded, along with F waves before and after either spinal manipulation or a control intervention for the same subjects on two different days...
December 23, 2016: Brain Sciences
https://www.readbyqxmd.com/read/27733823/pairing-voluntary-movement-and-muscle-located-electrical-stimulation-increases-cortical-excitability
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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"