Papers by Roongtiwa Vachalathiti
The quality of golf swing pattern could be presented with the X-factor angle which is the angle b... more The quality of golf swing pattern could be presented with the X-factor angle which is the angle between the pelvic rotation and the upper-torso rotation. Therefore, the higher of these angles brought to the more effected of speed and distance of the golf ball. Increasing of x-factor angle in golf players could lead to the lower back injury. A large number of low back pain golfers tend to be the cause of over range trunk rotation of their golf swing patterns. This study aimed to compare the x-factor angle in twenty-four Thai male amateur golf players (20-50 years old) with and without low back pain. The standard goniometer was used to measure the angle in seated rotation and half-kneeling rotation position. Independent t-test was used for data analysis (p-value < 0.05), the results from this study was shown no significantly different of x-factor angle was found between with and without low back pain Thai amateur golfers. To be concluded, the x-factor angle might not effect to the ...
Journal of Physical Therapy Science, 2010
To investigate the efficacy of pursed lips breathing with forced expiration techniques (PLB & FET... more To investigate the efficacy of pursed lips breathing with forced expiration techniques (PLB & FETs) and the active cycle of breathing technique (ACBT) on pulmonary mucus clearance in healthy subjects. [Methods] Three healthy subjects volunteered for the study. Pulmonary mucus clearance was measured over 70 minutes on three different days by a radioaerosol technique. Each subject attended three sessions, one each of control (normal breathing), PLB & FETs and ACBT. [Results] The efficacy of both airway clearance techniques was similar, but better than that of normal breathing. In the central lung zone, PLB & FETs demonstrated a slight enhancement of mucus clearance as compared with ACBT and normal breathing. In the intermediate and peripheral zones, PLB & FETs and ACBT resulted in a relatively high mucus clearance as compared with normal breathing. Overall mucus clearance of normal lungs was remarkably improved by PLB & FETs and ACBT. [Conclusion] Enhanced mucus clearance in healthy subjects, particularly in the intermediate and peripheral lung zone, can be achieved by PLB & FETs and ACBT.
Journal of Physical Therapy Science, 2011
This study investigated the effects of passive stretching (STR) and strain counter-strain (SCS) t... more This study investigated the effects of passive stretching (STR) and strain counter-strain (SCS) techniques in subjects with myofascial pain syndrome (MPS) as measured by a visual analogue scale (VAS), pressure pain threshold (PPT), displacement pain threshold (DPT), active range of motion (AROM), and patients perception of change (PPC). [Subjects] Twenty volunteers with active MPS in the upper trapezius muscle participated in the study. [Methods] The subjects were randomly allocated to either a STR or SCS treatment group. Evaluations were performed at before, immediately, one hour, and one day after treatment. [Results] No significant difference between groups were found. However, there was a significant improvement of VAS an hour after SCS treatment. The improvement seemed to be maintained after treatment. The STR group showed a significant decrease of DPT between immediately and a day after treatment, indicating less tissue compliance. [Conclusion] The SCS treatment helps relieve the pain one hour after treatment in subjects with active MPS.
Dementia & Neuropsychologia, 2021
ABSTRACT. Action observation (AO) has been proved to be of benefit in several neurological condit... more ABSTRACT. Action observation (AO) has been proved to be of benefit in several neurological conditions, but no study has previously been conducted in idiopathic normal pressure hydrocephalus (iNPH). Objective: This study aimed to investigate the feasibility of AO in iNPH patients. Methods: A single-group pretest-posttest design was conducted in twenty-seven iNPH patients. Gait and mobility parameters were assessed using the 2D gait measurement in the timed up and go (TUG) test for two trials before and after immediate AO training. The outcomes included step length and time, stride length and time, cadence, gait speed, sit-to-stand time, 3-m walking time, turning time and step, and TUG. In addition, early step length and time were measured. AO consisted of 7.5 min of watching gait videos demonstrated by a healthy older person. Parameters were measured twice for the baseline to determine reproducibility using the intraclass correlation coefficient (ICC3,1). Data between before and afte...
Single-leg jump landing in various directions is a common task in sport activities. The aim of th... more Single-leg jump landing in various directions is a common task in sport activities. The aim of the present study was to investigate joint kinetics including knee net joint forces (KNJFs) and knee net joint moments (KNJMs) during single-leg jump landing. Material and method: Vicon™ motion analysis system and AMTI forceplate were used to collect the data. Nineteen female volleyball athletes were asked to perform the single-leg jump landing from a 30cm height platform in four directions including forward (0°), 30°diagonal, 60°diagonal, and lateral (90°) directions. The result exhibited that direction of single-leg jump landing significantly influenced (p<0.05) to peak KNJFs and KNJMs. A decreasing trend of peak anterior KNJF and an increasing trend of peak lateral KNJF were noted in forward, 30°diagonal, 60°diagonal and lateral jump landing, respectively. Significantly greater internal rotator and significantly less extensor of KNJMs were found during landing in lateral direction. C...
Neuromodulation: Technology at the Neural Interface, 2021
OBJECTIVE To determine the effect of five-session dual-transcranial direct current stimulation (d... more OBJECTIVE To determine the effect of five-session dual-transcranial direct current stimulation (dual-tDCS) combined with task-specific training on gait and lower limb motor performance in individuals with subacute stroke. MATERIALS AND METHODS Twenty-five participants who had a stroke in the subacute phase with mild motor impairment were recruited, randomized, and allocated into two groups. The active group (n = 13) received dual-tDCS with anodal over the lesioned hemisphere M1 and cathodal over the nonlesioned hemisphere, at 2 mA for 20 min before training for five consecutive days, while the sham group (n = 12) received sham mode before training. Gait speed as a primary outcome, temporospatial gait variables, lower-limb functional tasks (sit-to-stand and walking mobility), and muscle strength as secondary outcomes were collected at preintervention and postintervention (day 5), one-week follow-up, and one-month follow-up. RESULTS The primary outcome and most of the secondary outcomes were improved in both groups, with no significant difference between the two groups, and most of the results indicated small to moderate effect sizes of active tDCS compared to sham tDCS. CONCLUSION The combined intervention showed no benefit over training alone in improving gait variables and lower-limb performance. However, some performances were saturated at some point, as moderate to high function participants were recruited in the present study. Future studies should consider recruiting participants with more varied motor impairment levels and may need to determine the optimal stimulation protocols and parameters to improve gait and lower-limb performance.
European journal of sport science, 2017
Side-to-side differences of lower extremities may influence the likelihood of injury. Moreover, a... more Side-to-side differences of lower extremities may influence the likelihood of injury. Moreover, adding the complexity of jump-landing direction would help to explain lower extremity control during sport activities. The aim was to determine the effects of limb dominance and jump-landing direction on lower extremity biomechanics. Nineteen female volleyball athletes participated. Both dominant limbs (DLs) and non-dominant limbs (NLs) were examined in single-leg jump-landing tests in four directions, including forward (0°), diagonal (30° and 60°), and lateral (90°) directions. Kinematic marker trajectories and ground reaction forces were collected using a 10 camera Vicon system and an AMTI force plate. Repeated measures ANOVA (2 × 4, limb × direction) was used to analyse. The finding showed that, at peak vertical GRF, a significant interaction of limb dominance and direction effects was found in the hip flexion angle and lower extremity joint kinetics (p < .05). NLs and DLs exhibited...
Journal of Health Science วารสารวิชาการสาธารณสุข, Sep 16, 2011
This randomized controlled trial was to investigate the effects of physical therapy treatments co... more This randomized controlled trial was to investigate the effects of physical therapy treatments combined with lumbar stabilization exercise (LSE) in patients with chronic nonspecific low back pain (CLBP). Fifty-five subjects were divided into two groups of 1) conventional physical therapy (control group) and 2) lumbar stabilization exercise (exercise group). Analyses used independent sample t-test and chi square test for comparison between the two groups at level of statistical significance was set at p < 0.05. After the intervention period, both groups showed ecrease in pain and functional disabilities but there was no statistically significant difference between the two groups. For complete recurrence it was found that the exercise group showed fewer recurrences of LBP than those of the control group significantly (p < 0.001). In conclusion, the conventional physical therapy combined with LSE was found to be more effective in reducing pain, decreasing functional disability, and reducing recurrence rate than the conventional physical therapy only for patients with CLBP. Key words: chronic low back pain, lumbar stabilization exercise, spinal instability
Journal of the Medical Association of Thailand = Chotmaihet thangphaet, 2014
Reach and grasp components must be co-ordinated to preserve the optimal reach-to-grasp performanc... more Reach and grasp components must be co-ordinated to preserve the optimal reach-to-grasp performance. However conflicting results regarding the deficit in reach-to-grasp co-ordination has been reported in the paretic hand of individuals after stroke. Additionally, investigations have not been undertaken to study more challenging task constraints to induce the impairment of reach-to-grasp co-ordination. This study aimed to compare reach-to-grasp co-ordination while avoiding an obstacle in the paretic hand of individuals after stroke with matched non-disabled adults. Twenty-four participants having mild severity of upper extremity impairment were recruited with an equal number of non-disabled adults. Kinematic reach-to-grasp movements with obstacle avoidance were analyzed. Reach-to-grasp co-ordination was quantified using cross-correlation analysis: maximum correlation coefficient represented the spatial aspect and the time lag represented the temporal aspects. Individuals after stroke ...
Chiang Mai University Journal of Natural Sciences, 2014
The present study investigated the effects of physical therapy treatment on gait initiation in pa... more The present study investigated the effects of physical therapy treatment on gait initiation in patients with Parkinson's disease (PD). Thirteen patients with PD were randomized into a treatment (n = 7) and control (n = 6) group. Participants were assessed for their severity level, using the Modified Hoehn and Yahr scale, and motor evaluation, using the Unified Parkinson's Disease Rating Scale (UPDRS), items III and IV. At pre-and post-assessments, gait initiation was assessed using a gait mat, synchronized with a video camera. The treatment group received a physical therapy training program based on the TrainingBIG™ technique and task-specific concepts, three times per week for four weeks. The control group received no physical therapy treatment. From analysis of the pre-and post-assessment variables, only the treatment group showed a significant decrease in preparatory phase time (p = 0.043) and increase in step length (p = 0.018). In addition, the treatment group had a significant increase in step length (p = .022) at post-assessment when compared to the control group. The present findings demonstrated that physical therapy treatment would be beneficial for patients with PD experiencing gait initiation problems.
Journal of rehabilitation medicine, Jan 16, 2015
Objective: To identify the predictors of community participation after spinal cord injury. Design... more Objective: To identify the predictors of community participation after spinal cord injury. Design: Cross-sectional design. Methods: A total of 139 persons with spinal cord injury living in the community completed 4 instruments: the Impact on Participation and Autonomy (IPA-Thai version), the Craig Hospital Inventory of Environmental Factors (CHIEF-SF-Thai version), the Personal Resource Questionnaire (PRQ2000-Thai version), and a personal history questionnaire. Functional performance was assessed using the Functional Independence Measure (FIM) motor subscale. Results: Participants comprised 79% males. Fifty-one percent of variance in community participation was explained by social support, functional performance, age, and age at time of injury. Conclusion: Key predictors of community participation were the availability of social support and the individual's functional performance. These predictors should be emphasized when developing interventions in rehabilitation and community...
Topics in Stroke Rehabilitation, 2013
Skill acquisition, capacity building, and motivational enhancements are the basis of the Accelera... more Skill acquisition, capacity building, and motivational enhancements are the basis of the Accelerated Skill Acquisition Program (ASAP) and form the foundation for effective incorporation of the paretic upper extremity into life activities. This is the first phase I trial to deliver ASAP during the postacute interval in mildly to moderately impaired stroke survivors and to include an assessment of paretic reach-to-grasp (RTG) coordination using RTG task and cross-correlation analyses. Two baseline and posttreatment evaluations consisted of RTG actions, the Wolf Motor Function Test (WMFT), and the Stroke Impact Scale (SIS). An individualized arm therapy program using ASAP principles was administered for a total of 30 hours, 2 hours per day, for 2 to 4 days per week over 5 weeks. Dependent measures were kinematics of RTG actions, RTG coordination, total time score of WMFT, and stroke recovery score of SIS. All participants tolerated ASAP well, and none reported any adverse effects during or after the protocol. When the 2 baseline evaluations were compared, there were no changes in any RTG kinematics or RTG coordination. In contrast, after 30 hours of ASAP, total movement time and deceleration time of RTG actions markedly decreased, maximum reach (transport) velocity strikingly increased, and time of maximum aperture was accomplished later. Additionally, the maximal RTG correlation coefficient increased with a shorter associated time lag. A similar pattern was observed for the clinical outcome measures of WMFT and SIS. The findings demonstrate the feasibility of using an ASAP protocol for patients 1 to 3 months post stroke. Under ASAP, WMFT tasks and RTG actions were performed faster with higher peak transport velocity and a more coordinated RTG pattern. The next step is to determine whether the immediate gains in the skilled RTG actions persist 6 months alter.
The Kaohsiung Journal of Medical Sciences, 2012
The purposes of this study were to investigate the upper and contralateral lower limb coordinatio... more The purposes of this study were to investigate the upper and contralateral lower limb coordination and to study the effect of speed on the upper and contralateral lower limb coordination in individuals with stroke and control groups. Thirty individuals with stroke who were able to walk independently without using any assistive devices and 30 control individuals were recruited for the study. Upper and contralateral lower limb coordination was analyzed using the shoulder and contralateral hip displacements in the sagittal plane. All data were analyzed by three-dimensional gait analysis. Results demonstrated high degrees of coordination in the upper and contralateral lower limbs of the controls and in the unaffected upper and affected lower limbs of individuals with stroke. Gait speed was found to be associated with the upper and contralateral lower limb coordination in individuals with stroke but not in the controls. The findings implied that the affected upper limb plays an important role for improving gait coordination and is necessary for gait performance in individuals with stroke. Thus, health professionals should exercise the affected arm to increase efficiency of walking in individuals with stroke.
Journal of Physical Therapy Science, 2013
This study investigated postural stability and visual vertical perception of healthy middleaged s... more This study investigated postural stability and visual vertical perception of healthy middleaged subjects before and after induction of dorsal neck muscle fatigue. [Subjects] Fourteen subjects (3 males, 11 females) were recruited from the community. [Methods] To induce neck extensor muscle fatigue, participants pushed their heads against a myometer. The average center of pressure (COP) displacement in the medial-lateral (ML) and anterior-posterior (AP) directions and average sway velocity were measured on a force platform, and the error in visual vertical perception was measured using the rod and frame test. [Results] The average COP displacement in the AP direction and average sway velocity were significantly different between before and after induction of neck muscle fatigue. No difference in the average COP displacement in the ML direction or errors in visual verticality perception was observed before and after neck muscle fatigue. [Conclusion] In the presence of visual input, dorsal neck muscle fatigue induced postural instability, but not visual vertical misperception. After isometric or repetitive neck extensor muscle contraction for a long period, taking a rest for a while before changing posture from sitting to standing is recommended for workers, to avoid an increase in postural sway in standing, which may lead to an accidental fall.
Journal of Physical Therapy Science, 2011
The present study investigated the center of pressure (COP) and center of mass needed for gait in... more The present study investigated the center of pressure (COP) and center of mass needed for gait initiation in children with typical development (TD), children with diplegia who independently walk (CP-GI), and children with diplegia who walk with a walker (CP-depGI). [Subjects] Three groups of 10 children (TD, CP-GI, & CP-DepGI), aged 7-10 years, were matched by age, weight, and height. [Methods] Each group was asked to independently initiate gait 3 times at a self-selected pace. The data were collected by a 3D motion analysis system (Vicon 612) and a force plate (AMTI-Advanced Mechanical Technology). The best trial of each participant was analyzed. The displacements and velocities of the COP and the COM were compared among the three groups. These parameters were analyzed using one-way ANOVA or the Kruskal-Wallis test. [Results] The COP-AP, COP-ML, COM-ML displacements and the COP-ML velocity before lift-off of the swing limb (phase 2) were similar among the three groups whereas they were somewhat different prior to movement (phase 1). Additionally, the COM-AP velocities in phase 2 were significantly different among the three groups. [Conclusion] This study provides basic data regarding the COP and the COM parameters that influence the achievement and efficiency of gait initiation in children. The data indicate the essential parameters for gait initiation and efficiency that should help physical therapists to appropriately treat children with spastic diplegia who cannot initiate gait or perform the task with a difficulty.
Disability and Rehabilitation: Assistive Technology, 2013
The study investigated how the subjects, 18 children with spastic diplegia aged 7-14 years, attai... more The study investigated how the subjects, 18 children with spastic diplegia aged 7-14 years, attained sit-to-stand (STS). The children were divided into two groups and three STS conditions: 1) those who could attain STS independently (I-STS), 2) those who could not attain STS independently (D-STS), and 3) subjects from the D-STS condition who could successfully attain STS with the walker (W-STS). The results showed that I-STS had more mean maximum horizontal location of the upper body and knee than the hip. All body segments of D-STS followed the same model as the I-STS condition, but they moved with less magnitude than I-STS. W-STS presented both pattern and magnitudes relatively similar to I-STS. Furthermore, I-STS showed the highest mean maximum horizontal and vertical velocities of body segments, when compared with the other STS conditions. W-STS performed the mean maximum horizontal and vertical linear velocities of all selected segments close to D-STS did.
Journal of Biomechanics, 1994
Gait & Posture, 1994
This study reports the patterns of spinal segment motion assooiated with preferred and fast speed... more This study reports the patterns of spinal segment motion assooiated with preferred and fast speed walking in young healthy females. 21 female subjects aged between 20 and 35 years were filmed while walking over a level walkway using an automated three dimensional video-analysis system (Motion Analysis Expertvision). Trunk, pelvic and lower limb segments were defined as rigid bodies with lightweight spherical retroreflective markers. Angular displacements were derived using order-independent Eulerian computation. Fast speed walking was 42% faster than preferred speed. This increase was associated with a 22% increase in cadence. The complementary step length mcrease was investigated to establish the contribution of the spinal segments to the increased displacement. Significant increases were found with iucreased walking speed in the lateral tlexion displacements at all spinal levels and with respect to the pelvis @<O.OOl). These differences were all greater than the theoretical accuracy of the measurement system. No significant differences in amplitudes were found in any segments with respect to flexion/exteusion or axial rotation with increased walking speed. A significant increase in range of hip joint flexion/extension was associated with fast-speed walking @<O.OOl).
Gait & Posture, 1997
We report a study into the coordination of the movements of the pelvis and hip joints during walk... more We report a study into the coordination of the movements of the pelvis and hip joints during walking at two speeds. 108 healthy subjects were filmed using an automated video-based system. Movements of the pelvis and the lower limbs and their contribution to step length were analysed and the coordination of the movements with respect to one another was investigated using cross-correlational analysis. We found strong evidence of consistent temporal relationships within some of the movements with no gender or age effect. Increasing walking speed to a fast comfortable pace tended to produce tighter phase locking of movement patterns. We conclude that expression of the biomechanical determinants of walking ought to include temporal interactions and that axial rotation of the pelvis is probably of little consequence as an essential component of normal gait. 8 1997 Elsevier Science B.V.
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Papers by Roongtiwa Vachalathiti