Research Topics
| P W HodgesSummaryAffiliation: University of New South Wales Country: Australia Publications
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Detail Information
Publications
In vivo measurement of the effect of intra-abdominal pressure on the human spineP W Hodges
Prince of Wales Medical Research Institute, High Street, Randwick, New South Wales 2031, Sydney, Australia
J Biomech 34:347-53. 2001....- Pitfalls of intramuscular electromyographic recordings from the human costal diaphragmP W Hodges
Prince of Wales Medical Research Institute, High Street, Randwick NSW 2031, Australia
Clin Neurophysiol 111:1420-4. 2000..This report describes procedures to assist with precise placement of these electrodes using ultrasound imaging and describes several sources of error that must be excluded when interpreting recordings made with intramuscular electrodes... - Perturbed upper limb movements cause short-latency postural responses in trunk musclesP W Hodges
Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
Exp Brain Res 138:243-50. 2001..The results provide evidence of initiation of a complex postural response of the trunk muscles that is consistent with mediation by afferent input from a site distant to the lumbar spine, which may include afferents of the upper limb... - Transversus abdominis and the superficial abdominal muscles are controlled independently in a postural taskP W Hodges
Department of Physiotherapy, The University of Queensland, Australia
Neurosci Lett 265:91-4. 1999..Dissociation of the behaviour of TrA and the other abdominal muscles suggests that TrA may be controlled independently of the motor command for limb movement in contrast to the other abdominal muscles... 
Activation of the human diaphragm during a repetitive postural taskP W Hodges
Prince of Wales Medical Research Institute, High Street, Randwick, NSW 2031, Australia
J Physiol 522:165-75. 2000..The results indicate that activity of human phrenic motoneurones is organised such that it contributes to both posture and respiration during a task which repetitively challenges trunk posture...- Three dimensional preparatory trunk motion precedes asymmetrical upper limb movementP W Hodges
Department of Neuroscience, Karolinska Institute, Stocholm, Sweden
Gait Posture 11:92-101. 2000..The results provide evidence that anticipatory postural adjustments result in movements and not simple rigidification of the trunk... - Changes in intra-abdominal pressure during postural and respiratory activation of the human diaphragmP W Hodges
Prince of Wales Medical Research Institute, University of New South Wales, Sydney, New South Wales 2031, Australia
J Appl Physiol 89:967-76. 2000.... - Changes in motor planning of feedforward postural responses of the trunk muscles in low back painP W Hodges
Prince of Wales Medical Research Institute, Barker Street Randwick, Sydney, NSW 2031, Australia
Exp Brain Res 141:261-6. 2001..While inhibition of the descending motor command cannot be excluded, it is more likely that the change in recruitment of TrA represents a more complex change in organisation of the postural response... - Postural activity of the diaphragm is reduced in humans when respiratory demand increasesP W Hodges
Department of Physiology, Prince of Wales Medical Research Institute and University of New South Wales, Sydney, Australia
J Physiol 537:999-1008. 2001..This attenuation can affect the key inspiratory and expiratory muscles and is likely to be co-ordinated at a pre-motoneuronal site... 
The effect of therapeutic exercise on activation of the deep cervical flexor muscles in people with chronic neck painG A Jull
Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, Division of Physiotherapy, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
Man Ther 14:696-701. 2009..05). Specific low load C-CF exercise changes spatial and temporal characteristics of DCF activation which may partially explain its efficacy in rehabilitation...- Coexistence of stability and mobility in postural control: evidence from postural compensation for respirationP W Hodges
Prince of Wales Medical Research Institute and University of New South Wales, Sydney, Australia
Exp Brain Res 144:293-302. 2002..Thus, stability in quiet stance is dependent on movement of multiple body segments and control of equilibrium cannot be reduced to control of a single joint... - Relationship between limb movement speed and associated contraction of the trunk musclesP W Hodges
Department of Physiotherapy, University of Queensland, Australia
Ergonomics 40:1220-30. 1997..The results indicate that the reaction time latency of the trunk muscles is influenced by limb inertia only with limb movement below a threshold velocity... - Postural control of the trunk in response to lateral support surface translations during trunk movement and loadingQ M Huang
Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
Exp Brain Res 141:552-9. 2001..This reduced efficiency can be explained by a conflict between the motor commands for the ongoing voluntary task and the postural response, and/or by the mechanical effect of the asymmetrical addition of load to the trunk... - Postural and respiratory functions of the pelvic floor musclesP W Hodges
Division of Physiotherapy, The University of Queensland, Brisbane, Queensland, Australia
Neurourol Urodyn 26:362-71. 2007..Furthermore, as IAP is modulated during respiration this is likely to be accompanied by changes in PFM activity... - Inefficient muscular stabilization of the lumbar spine associated with low back pain. A motor control evaluation of transversus abdominisP W Hodges
Department of Physiotherapy, University of Queensland, Australia
Spine (Phila Pa 1976) 21:2640-50. 1996..CONCLUSIONS: The delayed onset of contraction of transversus abdominis indicates a deficit of motor control and is hypothesized to result in inefficient muscular stabilization of the spine... - Contraction of the abdominal muscles associated with movement of the lower limbP W Hodges
Department of Physiotherapy, University of Queensland, Brisbane, Australia
Phys Ther 77:132-42; discussion 142-4. 1997..A model involving evaluation of the response of the lumbar multifidus and abdominal muscles to leg movement was developed to evaluate this function... - Co-activation of the abdominal and pelvic floor muscles during voluntary exercisesR R Sapsford
Department of Physiotherapy, Mater Misericordiae Hospital, Brisbane, Australia
Neurourol Urodyn 20:31-42. 2001.... - Reorganization of the motor cortex is associated with postural control deficits in recurrent low back painH Tsao
NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, QLD 4072, Australia
Brain 131:2161-71. 2008..These findings provide preliminary evidence of reorganization of trunk muscle representation at the motor cortex in individuals with recurrent LBP, and suggest this reorganization is associated with deficits in postural control... - Feedforward activity of the cervical flexor muscles during voluntary arm movements is delayed in chronic neck painD Falla
Department of Physiotherapy, The University of Queensland, 4072, Brisbane, Queensland, Australia
Exp Brain Res 157:43-8. 2004..As the deep cervical muscles are fundamentally important for support of the cervical lordosis and the cervical joints, change in the feedforward response may leave the cervical spine vulnerable to reactive forces from arm movement... - Contraction of the pelvic floor muscles during abdominal maneuversR R Sapsford
Department of Physiotherapy, Mater Misericordiae Hospital, Brisbane, Australia
Arch Phys Med Rehabil 82:1081-8. 2001..To determine whether voluntary abdominal muscle contraction is associated with pelvic floor muscle activity... - Mechanical coupling between transverse plane pelvis and thorax rotations during gait is higher in people with low back painW van den Hoorn
The University of Queensland, Centre for Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, Queensland 4072, Australia
J Biomech 45:342-7. 2012..These results support the argument that people with LBP adopt a protective movement strategy, possibly by increased trunk stiffness... - Measurement of muscle contraction with ultrasound imagingP W Hodges
Prince of Wales Medical Research Institute and the University of New South Wales, Sydney, New South Wales 2031, Australia
Muscle Nerve 27:682-92. 2003..Ultrasound imaging can thus provide a noninvasive method of detecting isometric muscle contractions of certain individual muscles... - Peripheral electrical stimulation to induce cortical plasticity: a systematic review of stimulus parametersL S Chipchase
School of Health and Rehabilitations Sciences Physiotherapy, The University of Queensland, Brisbane, Queensland 4072, Australia
Clin Neurophysiol 122:456-63. 2011..There is insufficient evidence to determine the effect of other stimulation parameters such as frequency and waveform. Further research is needed to confirm whether modulation of these parameters affects plastic change... - A comparison of computer-based methods for the determination of onset of muscle contraction using electromyographyP W Hodges
Department of Physiotherapy, University of Queensland, Brisbane, Australia
Electroencephalogr Clin Neurophysiol 101:511-9. 1996..Several methods accurately selected the time of onset of EMG activity and are recommended for future use... - Balancing acts: respiratory sensations, motor control and human postureS C Gandevia
Prince of Wales Medical Research Institute, Sydney, Randwick, New South Wales, Australia
Clin Exp Pharmacol Physiol 29:118-21. 2002..4. Thus, challenges to posture can indirectly challenge ventilation, while coordinated diaphragm contraction may contribute to control of the trunk... - Temporal association between changes in primary sensory cortex and corticomotor output during muscle painS M Schabrun
The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Science, St Lucia, Brisbane, Queensland 4072, Australia
Neuroscience 235:159-64. 2013..Although altered processing in the primary motor (M1) and sensory cortex (S1) is implicated in pain, the temporal relationship between these regions is unknown and may provide insight into the interaction between them... - Quadriceps activity and movement reactions in response to unpredictable sagittal support-surface translations in women with patellofemoral painA K Stensdotter
Department of Community Medicine and Rehabilitation, Physiotherapy, Umea University, S 901 87 Umea, Sweden
J Electromyogr Kinesiol 18:298-307. 2008..This learned response appears to remain even when the pain is no longer present... - Changes in joint stability with muscle contraction measured from transmission of mechanical vibrationM G Feltham
Institute for Fundamental and Clinical Human Movement Sciences, Faculty of Human Movement Sciences, Vrije Universiteit, Amsterdam, Van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands
J Biomech 39:2850-6. 2006..98) and 50 Hz (R(2)=0.72), but not at 55 Hz (R(2)=0.10). In conclusion, vibration transmission gain may provide a method to evaluate changes in joint stability properties... - The sit-up: complex kinematics and muscle activity in voluntary axial movementP J Cordo
Neurological Science Institute, Oregon Health and Science University, 505 NW 185th Avenue, Beaverton, OR, USA
J Electromyogr Kinesiol 13:239-52. 2003..This complex pattern changed qualitatively from one phase to the next, suggesting that the roles of different muscles and, as a consequence, the overall form of coordination, change during the sit-up... - Balance impairment is related to vertebral fracture rather than thoracic kyphosis in individuals with osteoporosisA M Greig
Centre for Health, Exercise and Sports Medicine, School of Physiotherapy, University of Melbourne, Victoria, 3010, Australia
Osteoporos Int 18:543-51. 2007..This study aimed to investigate the independent effects of osteoporotic vertebral fracture and thoracic kyphosis on balance characteristics in an osteoporotic population...