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1.
J Bodyw Mov Ther ; 24(1): 244-247, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31987551

RESUMO

INTRODUCTION: Expiratory flow is important to minimize the risk of infection by expelling foreign substances from the lungs. Abdominal muscle activities primarily produce expiratory flow. However, data on the association of abdominal muscle activity during expiratory effort and abdominal exercise posture with expiratory flow rate is limited. This study aimed to assess the correlation between expiratory flow and abdominal muscle activity while holding maximum expiration and performing the side bridge exercise in elderly women. METHODS: Rectus abdominis (RA), external oblique (EO), and internal oblique (IO) muscle activity was measured using electromyography in 14 elderly women (82.8 ±â€¯6.7 years), who could walk independently while performing 2 tasks: holding their breath after maximum expiration in the crook-lying position (maximum expiration), and performing the side bridge exercise on their knees without breathing instruction (side bridge). Peak expiratory flow (PEF) was obtained using a peak flow meter. Correlations between PEF and the abdominal muscle activity were determined using the Spearman rank correlation coefficient. RESULTS: The correlation coefficients between PEF and RA, EO, and IO activity while holding maximum expiration were 0.407 (p = 0.149), -0.345 (p = 0.227), and 0.732 (p = 0.003), respectively. The correlation coefficients between PEF and RA, EO, and IO activity while performing the side bridge exercise were -0.297 (p = 0.303), -0.552 (p = 0.041), and 0.147 (p = 0.615), respectively. CONCLUSIONS: Higher IO activity while holding maximum expiration or lower EO activity while performing the side bridge exercise was related to higher PEF. Thus, maximum expiration and abdominal exercise might be effective in the improvement or prevention of the decrease of expiratory flow.

2.
J Bodyw Mov Ther ; 22(3): 657-660, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30100293

RESUMO

This study aimed to assess the intra and interrater reliability of transducer tilt during the ultrasound (US) measurements of the muscle thickness and the echo intensity of the rectus femoris muscle (RF). Fourteen healthy male subjects (20.8 ± 0.8 years) participated in this study. The transducer tilt was measured using a digital angle gauge (°) during US. Two experimenters took two images to measure the muscle thickness (mm) and the echo intensity (a.u.: arbitrary unit). The intra and interclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable change (MDC) were also calculated. These measurements were immediately repeated. The ICC for the intrarater reliability for the transducer tilt, muscle thickness, and echo intensity were 0.96 (SEM: 0.9°, MDC: 2.6°), 0.99 (SEM: 0.4 mm, MDC: 0.1 mm), and 0.97 (SEM: 0.6 a.u. , MDC: 1.7 a.u.), respectively. The ICC for the interrater reliability for the transducer tilt, muscle thickness, and echo intensity were 0.40 (SEM: 4.0°, MDC: 11.1°), 0.96 (SEM: 0.7 mm, MDC: 2.0 mm), and 0.95 (SEM: 0.9 a.u. , MDC: 2.4 a.u.), respectively. The intrarater reliability of the transducer tilt was reliable, but the interrater reliability was questionable. Meanwhile, both the intra- and interrater reliability of the muscle thickness and the echo intensity were reliable.


Assuntos
Músculo Quadríceps/diagnóstico por imagem , Músculo Quadríceps/fisiopatologia , Humanos , Masculino , Variações Dependentes do Observador , Ultrassonografia , Adulto Jovem
3.
J Phys Ther Sci ; 30(8): 1081-1085, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30154604

RESUMO

[Purpose] Although the abdominal draw-in maneuver improves delayed onset of transverse abdomen in patients with low back pain, it is difficult to perform. We investigated whether the maneuver with tape measure-based feedback was more effective in facilitating isolated transverse abdominal muscle contractions than that without feedback in healthy participants. [Participants and Methods] Twenty healthy males performed the maneuver without feedback (control condition) and then with feedback using a tape measure (tape measure condition) in the crook lying, sitting, and standing positions. A B-mode ultrasonography imaging system was used to determine lateral abdominal muscle thicknesses, the percent changes from before the maneuver were calculated for each condition, and the main effects and interactions for each tested muscle were determined. [Results] The percent change in the thickness of the transverse abdominal muscle was significantly greater under the tape measure condition than under the control condition. The percent change in internal oblique thickness during the maneuver was significantly greater in the standing position than in the crook lying or sitting positions. Significant condition-by-position interactions were not observed for any of the examined muscles. [Conclusion] The abdominal draw-in maneuver with tape measure-based feedback may be more effective at facilitating isolated transverse abdominal contractions in all the positions than that without feedback.

4.
J Electromyogr Kinesiol ; 39: 128-133, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29486424

RESUMO

Changes in the recruitment pattern of trunk muscles may contribute to the development of recurrent or chronic symptoms in people with low back pain (LBP). However, the recruitment pattern of trunk muscles during lifting tasks associated with a high risk of LBP has not been clearly determined in recurrent LBP. The present study aimed to investigate potential differences in trunk muscles recruitment patterns between individuals with recurrent LBP and asymptomatic individuals during lifting. The subjects were 25 individuals with recurrent LBP and 20 asymptomatic individuals. Electromyography (EMG) was used to measure onset time, EMG amplitude, overall activity of abdominal muscles, and overall activity of back muscles during a lifting task. The onsets of the transversus abdominis/internal abdominal oblique and multifidus were delayed in the recurrent LBP group despite remission from symptoms. Additionally, the EMG amplitudes of the erector spinae, as well as the overall activity of abdominal muscles or back muscles, were greater in the recurrent LBP group. No differences in EMG amplitude of the external oblique, transversus abdominis/internal abdominal oblique, and multifidus were found between the groups. Our findings indicate the presence of an altered trunk muscle recruitment pattern in individuals with recurrent LBP during lifting.


Assuntos
Músculos Abdominais/fisiopatologia , Músculos do Dorso/fisiopatologia , Eletromiografia/métodos , Remoção , Dor Lombar/fisiopatologia , Músculos Abdominais Oblíquos/fisiopatologia , Adulto , Feminino , Humanos , Dor Lombar/diagnóstico , Masculino , Músculos Paraespinais/fisiopatologia , Recrutamento Neurofisiológico/fisiologia , Recidiva , Indução de Remissão , Tronco , Adulto Jovem
5.
J Bodyw Mov Ther ; 22(1): 118-121, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29332734

RESUMO

The purpose of this study was to clarify the relationship between the size of the cervical flexor muscles and craniocervical (CC) flexion torque. Thirty-eight healthy men participated in this study. Thickness of the deep cervical flexor (DCF) and sternocleidomastoid (SM) muscles were measured using ultrasonography. Maximal isometric CC flexion torque was measured using dynamometry. The DCF and SM muscle thickness and CC flexion torque were normalized relative to body weight. Correlations between normalized muscle thickness and normalized CC flexion torque were determined. A significant positive correlation was observed between normalized DCF muscle thickness and normalized CC flexion torque (r = 0.361, P = 0.028), whereas there was no significant correlation between normalized SM muscle thickness and normalized CC flexion torque (r = 0.233, P = 0.166). DCF muscle thickness appears to have potential clinical application in the performance of CC flexion.


Assuntos
Músculos do Pescoço/fisiologia , Vértebras Cervicais/fisiologia , Feminino , Humanos , Masculino , Movimento/fisiologia , Dinamômetro de Força Muscular , Músculos do Pescoço/diagnóstico por imagem , Amplitude de Movimento Articular , Torque , Ultrassonografia
6.
NeuroRehabilitation ; 41(4): 783-790, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29254113

RESUMO

BACKGROUND: Accelerometers provide information regarding balance and gait, but they are rarely used in clinical settings for stroke patients. Clinically, balance is assessed with simple tests, but their relationships with accelerometry results after stroke are unknown. OBJECTIVE: We examined the relationship between accelerometry-assessed gait indices calculated from trunk acceleration and results of the Timed Up and Go (TUG) and Berg Balance Scale (BBS) tests in stroke patients. METHODS: Twenty-nine stroke patients completed assessments with the TUG, BBS, and trunk acceleration during walking using a tri-axial accelerometer. The root mean square (RMS), stride regularity (SR), and step symmetry (SS), which indicate gait fluctuations, regularity, and symmetry, respectively, were calculated based on trunk acceleration. These were calculated in the vertical (VT), anteroposterior, and mediolateral directions. A multiple linear regression analysis was performed to determine whether these gait indices contributed independently to TUG and BBS results. RESULTS: VT-RMS and VT-SS were significant determinants of TUG, and VT-SS, VT-RMS, and VT-SR were significant determinants of BBS. CONCLUSIONS: This study suggested that the gait indices calculated from trunk acceleration that were relevant to balance were those in the VT direction. These may be useful for evaluating dynamic gait balance in patients with stroke.


Assuntos
Equilíbrio Postural/fisiologia , Acidente Vascular Cerebral/fisiopatologia , Tronco/fisiologia , Caminhada/fisiologia , Acelerometria , Estudos de Coortes , Humanos , Acidente Vascular Cerebral/epidemiologia
7.
J Bodyw Mov Ther ; 21(4): 794-797, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29037629

RESUMO

The aim of this study was to quantify the activities of the rectus abdominis (RA), external oblique (EO), and internal oblique (IO) muscles during 30% and 75% of maximum expiratory pressure (PE max). Fifteen healthy male university students participated in this study. Electromyographic (EMG) activities of the RA, EO, and IO muscles were measured during 30% and 75% of PE max and then normalized relative to maximum voluntary contractions (%MVC). All muscles during 75% of PE max showed significantly higher %MVC compared to that during 30% of PE max (P < 0.01). The EO and IO muscles showed significantly higher %MVC compared to the RA muscle during 30% and 75% of PE max (P < 0.05). Muscle endurance and strength induced by expiratory muscle strength training might be different in each abdominal muscle.


Assuntos
Músculos Abdominais Oblíquos/fisiologia , Reto do Abdome/fisiologia , Respiração , Eletromiografia , Humanos , Masculino , Pressões Respiratórias Máximas , Força Muscular , Adulto Jovem
8.
J Stroke Cerebrovasc Dis ; 26(9): 1923-1928, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28739346

RESUMO

BACKGROUND: Multiple linear regression analysis is often used to predict the outcome of stroke rehabilitation. However, the predictive accuracy may not be satisfactory. The objective of this study was to elucidate the predictive accuracy of a method of calculating motor Functional Independence Measure (mFIM) at discharge from mFIM effectiveness predicted by multiple regression analysis. METHODS: The subjects were 505 patients with stroke who were hospitalized in a convalescent rehabilitation hospital. The formula "mFIM at discharge = mFIM effectiveness × (91 points - mFIM at admission) + mFIM at admission" was used. By including the predicted mFIM effectiveness obtained through multiple regression analysis in this formula, we obtained the predicted mFIM at discharge (A). We also used multiple regression analysis to directly predict mFIM at discharge (B). The correlation between the predicted and the measured values of mFIM at discharge was compared between A and B. RESULT: The correlation coefficients were .916 for A and .878 for B. CONCLUSION: Calculating mFIM at discharge from mFIM effectiveness predicted by multiple regression analysis had a higher degree of predictive accuracy of mFIM at discharge than that directly predicted.


Assuntos
Avaliação da Deficiência , Atividade Motora , Alta do Paciente , Acidente Vascular Cerebral/diagnóstico , Atividades Cotidianas , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Cognição , Feminino , Nível de Saúde , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Admissão do Paciente , Valor Preditivo dos Testes , Recuperação de Função Fisiológica , Fatores Sexuais , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/psicologia , Acidente Vascular Cerebral/terapia , Reabilitação do Acidente Vascular Cerebral , Fatores de Tempo , Resultado do Tratamento
9.
J Phys Ther Sci ; 29(6): 1025-1028, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28626315

RESUMO

[Purpose] This study evaluated balance tests in users of a day care service who needed nursing care or support, and investigated the usefulness of the Two-step Test for evaluating balance. [Subjects and Methods] The subjects were users of a day care service, and had certified need for long-term care or support. All subjects were able to undergo the balance evaluations. Balance tests included the 3-m Timed Up and Go test (TUG), the one-leg standing time, and the Two-step Test. [Results] The Two-step Test and other balance tests were strongly correlated. [Conclusion] In this study of subjects who needed nursing care or support, the results were the same as in a previous study of subjects who did not need nursing care or support. The Two-step Test should be considered as an indicator of balance ability in elderly individuals requiring nursing care or support.

10.
J Phys Ther Sci ; 29(4): 563-566, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28533585

RESUMO

[Purpose] The purpose of this investigation was to compare the activities of the abdominal muscles and peak expiratory flow between forced vital capacity and fast expiration exercise. [Subjects and Methods] Fifteen healthy male participated in this study. Peak expiratory flow and electromyographic activities of the rectus abdominis, external oblique, and internal oblique/transversus abdominis muscles were measured during forced vital capacity and fast expiration exercise and then peak amplitude and its appearance time were obtained. [Results] Peak expiratory flow values were significantly higher during fast expiration exercise than during forced vital capacity. The internal oblique/transversus abdominis muscles showed significantly higher peak amplitude during fast expiration exercise than during forced vital capacity. However, there were no significant differences between forced vital capacity and fast expiration exercise in the rectus abdominis and external oblique muscles. There was no difference in the appearance time of the peak amplitude between forced vital capacity and fast expiration exercise in any muscle. [Conclusion] Fast expiration exercise might be beneficial for increasing expiratory speed and neuromuscular activation of the internal oblique/transversus abdominis muscles compared to forced vital capacity. These findings could be considered when recommending a variation of expiratory muscle strength training as part of pulmonary rehabilitation programs.

11.
J Phys Ther Sci ; 29(12): 2190-2193, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29643602

RESUMO

[Purpose] This study aimed to assess the influence of ultrasound (US) transducer tilt on muscle thickness and echo intensity of the rectus femoris muscle (RF) in healthy subjects. [Subjects and Methods] Fourteen healthy male subjects (20.8 ± 0.8 years) participated in this study. Transducer tilt was measured during US, with a digital angle gauge. Muscle thickness and echo intensity were measured in 4 transducer tilt conditions: reference angle; +3°; +6°; and +9° cranial from the reference angle. [Results] All differences in transducer tilt relative to the reference condition were larger than the minimal detectable change (MDC) of the reference condition. All differences in muscle thickness relative to the reference condition were not larger than the MDC of the reference condition. All differences in the echo intensity relative to the reference condition, except between the reference and the +3° condition, were larger than the MDC of the reference condition. [Conclusion] Our results indicated that an examiner should maintain a precise transducer tilt during repeated US measurements to quantify the minimal change in the echo intensity of the RF.

12.
J Phys Ther Sci ; 28(10): 2759-2762, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27821930

RESUMO

[Purpose] The aim of this investigation was to determine the effects of 4 weeks of fast expiration exercises performed without pressure on respiratory muscle strength. [Subjects and Methods] Respiratory muscle strength of the training group that performed fast expiration exercises (n=12) was compared with that of a control group that performed no exercises (n=12). The fast expiration exercises were performed using a peak expiratory flow meter device and consisted of 20 fast expiration exercises performed 3 times per week for 4 weeks. Maximal expiratory and inspiratory pressures were evaluated as respiratory muscle strength using a spirometer pre- and post- intervention. [Results] There were significant increases in maximal expiratory pressure from 76.9 ± 29.1 to 96.1 ± 37.5 cmH2O and maximal inspiratory pressure from 80.8 ± 36.6 to 95.3 ± 37.6 cmH2O in the training group, but there was no significant difference in respiratory muscle strength between pre- and post-intervention in the control group. [Conclusion] Fast expiration exercises may be beneficial for increasing respiratory muscle strength. The findings of this study should be considered when prescribing a variation of the expiratory muscle strength training, as part of a pulmonary rehabilitation program.

13.
J Am Soc Mass Spectrom ; 27(7): 1219-26, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27098411

RESUMO

We propose detecting a fragment ion (Ph2As(+)) using counter-flow introduction atmospheric pressure chemical ionization ion trap mass spectrometry for sensitive air monitoring of chemical warfare vomiting agents diphenylchloroarsine (DA) and diphenylcyanoarsine (DC). The liquid sample containing of DA, DC, and bis(diphenylarsine)oxide (BDPAO) was heated in a dry air line, and the generated vapor was mixed into the humidified air flowing through the sampling line of a mass spectrometer. Humidity effect on the air monitoring was investigated by varying the humidity of the analyzed air sample. Evidence of the in-line conversion of DA and DC to diphenylarsine hydroxide (DPAH) and then BDPAO was obtained by comparing the chronograms of various ions from the beginning of heating. Multiple-stage mass spectrometry revealed that the protonated molecule (MH(+)) of DA, DC, DPAH, and BDPAO could produce Ph2As(+) through their in-source fragmentation. Among the signals of the ions that were investigated, the Ph2As(+) signal was the most intense and increased to reach a plateau with the increased air humidity, whereas the MH(+) signal of DA decreased. It was suggested that DA and DC were converted in-line into BDPAO, which was a major source of Ph2As(+). Graphical Abstract ᅟ.

14.
J Bodyw Mov Ther ; 20(1): 208-213, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26891657

RESUMO

The purpose of this study was to clarify the relationship between the thickness of the deep cervical flexor muscles (longus capitis and longus colli) at rest and sternocleidomastoid activity during the craniocervical flexion test (CCFT). Thirteen healthy males participated in this study. The thickness of the deep cervical flexor muscles was measured by ultrasound imaging in a relaxed supine position. Activity of the sternocleidomastoid was measured by electromyography during the CCFT at five incremental levels (22, 24, 26, 28, and 30 mm Hg). Correlations between normalized muscle thickness relative to body mass index and sternocleidomastoid activity were determined. Significant negative correlations were observed between normalized muscle thickness and activity of the sternocleidomastoid at 26 (r = -0.622, P = 0.023) and 28 mmHg (r = -0.653, P = 0.015). Individuals with smaller deep cervical flexor muscles exhibited increased activity in the sternocleidomastoid during the CCFT.


Assuntos
Contração Muscular/fisiologia , Músculos do Pescoço/fisiologia , Adolescente , Vértebras Cervicais , Eletromiografia , Humanos , Masculino , Músculos do Pescoço/diagnóstico por imagem , Descanso , Adulto Jovem
15.
Disabil Rehabil Assist Technol ; 11(4): 333-8, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-25027616

RESUMO

PURPOSE: The purposes of this study were to construct a real-time acceleration gait analysis system equipped with software to analyse real-time trunk acceleration during walking and to examine the intra-rater and inter-rater reliabilities of the this system. METHODS: This system has been comprised of an accelerometer, an acceleration amplifier, a transmitter, two foot switches, a receiver and a personal computer installed with the real-time acceleration analysis software. The acceleration signals received were analysed using the real-time acceleration analysis software, and gait parameters were calculated. The subjects were 20 healthy individuals and two raters. The intra-rater and inter-rater reliabilities of the measurement results obtained from this system were examined by performing intraclass correlation coefficients (ICC) and Bland-Altman analysis. RESULTS: The intra-rater and inter-rater ICCs ranged from 0.61 to 0.92 in any gait parameters. In the Bland-Altman analysis, neither fixed nor proportional bias was found in any of the gait parameters. CONCLUSIONS: From the ICC and Bland-Altman analysis results, the gait measurement using this system clearly demonstrates that the intra-rater and inter-rater measurements had good reproducibility. Owing to this system, we can improve the clinical efficiency of gait analysis and gait training for physiotherapy. Implication for Rehabilitation This study focused on the advantage of a gait analysis method using an accelerometer and constructed a gait analysis system that calculates real-time gait parameters from trunk acceleration measurements during walking. The gait analysis using this system has good intra-rater and inter-rater reliabilities, and using this system can improve the clinical efficiency of gait analysis and gait training.


Assuntos
Aceleração , Modalidades de Fisioterapia , Caminhada/fisiologia , Acelerometria , Fenômenos Biomecânicos , Sistemas Computacionais , Feminino , Marcha , Humanos , Masculino , Variações Dependentes do Observador , Reprodutibilidade dos Testes , Adulto Jovem
16.
J Electromyogr Kinesiol ; 26: 125-9, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26711271

RESUMO

The purpose of this study was to clarify the effectiveness of expiration and abdominal bracing maneuvers in response to sudden trunk loading in healthy subjects. Fifteen healthy male subjects were anteriorly loaded under different experimental conditions. Tests were conducted at rest and while performing each of the stabilization maneuvers (expiration and abdominal bracing) at 15% of the maximal voluntary isometric contraction of the internal oblique muscle. Subjects had no knowledge of the perturbation timing. An electromyographic biofeedback system was used to control the intensity of internal oblique muscle activation. Muscular pre-activation of three trunk muscles (internal oblique, external oblique, and L3 erector spinae muscles) and lumbar acceleration in response to loading were measured. The expiration and abdominal bracing maneuvers promoted torso co-contraction, reduced the magnitude of lumbar acceleration, and increased spinal stability compared to the resting condition. There were no differences between the expiration and abdominal bracing maneuvers in the pre-activation of the three trunk muscles or in lumbar acceleration in response to loading. It appears that both expiration and abdominal bracing maneuvers are effective in increasing spinal stability in response to sudden anterior loading.


Assuntos
Músculos Abdominais/fisiologia , Músculos do Dorso/fisiologia , Expiração/fisiologia , Vértebras Lombares/fisiologia , Tronco/fisiologia , Suporte de Carga/fisiologia , Eletromiografia/métodos , Humanos , Contração Isométrica/fisiologia , Região Lombossacral/fisiologia , Masculino , Contração Muscular/fisiologia , Músculo Esquelético/fisiologia , Aparelhos Ortopédicos , Postura/fisiologia , Adulto Jovem
17.
Intern Med ; 54(23): 3061-4, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26631893

RESUMO

We herein report three cases of Parkinson's disease associated with difficulty in eyelid opening, referred to as apraxia of eyelid opening (AEO), which improved after aripiprazole treatment. In case 1, aripiprazole was administered as a psychiatric treatment. It proved to be effective in AEO with blepharospasm. In case 2 and case 3, the patients experienced AEO without blepharospasm, and a significant improvement was observed after aripiprazole treatment. In this study, the aripiprazole dosage ranged between 3 and 9 mg/day. This is the first report of aripiprazole as a potentially effective treatment for AEO in Parkinson's disease.


Assuntos
Apraxias/tratamento farmacológico , Aripiprazol/administração & dosagem , Blefarospasmo/tratamento farmacológico , Doença de Parkinson/tratamento farmacológico , Apraxias/etiologia , Blefarospasmo/etiologia , Pálpebras/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doença de Parkinson/complicações , Resultado do Tratamento
18.
J Bodyw Mov Ther ; 19(4): 717-21, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26592229

RESUMO

The purpose of this study was to clarify the correlation between neck slope angle and deep cervical flexor muscle thickness in healthy subjects. Forty-two healthy male (20.7 ± 2.6 years old) participated in this study. Neck slope angle was measured in a relaxed sitting posture. The deep cervical flexor muscle thickness was measured in a relaxed supine posture. The correlations between neck slope angle and normalized muscle thickness relative to body mass index were determined using Pearson's correlation coefficient. There was a moderate positive correlation between neck slope angle and normalized muscle thickness (r = 0.414, P = 0.006). The result demonstrated that participants with lower neck slope angles had smaller muscle thicknesses of the deep cervical flexor muscles. It appears that the deep cervical flexor muscle thickness might be associated with neck slope angle in a relaxed sitting posture.


Assuntos
Músculos do Pescoço/fisiologia , Pescoço/anatomia & histologia , Pescoço/fisiologia , Adolescente , Índice de Massa Corporal , Voluntários Saudáveis , Humanos , Masculino , Pescoço/diagnóstico por imagem , Músculos do Pescoço/diagnóstico por imagem , Ultrassonografia , Adulto Jovem
19.
J Ultrasound Med ; 34(11): 2001-5, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26396169

RESUMO

OBJECTIVES: The activity of abdominal muscles mainly produces high expiratory pressure. These include the rectus abdominis, external oblique, internal oblique, and transverse abdominis muscles. The purpose of this study was to determine whether maximal expiratory pressure is associated with each abdominal muscle thickness at rest. METHODS: Thirty-nine healthy male volunteers (mean age ± SD, 20.7 ± 2.7 years) participated in the study. The thickness of the right rectus abdominis, external oblique, internal oblique, and transverse abdominis muscles was measured by B-mode sonography in the supine position. The maximal expiratory pressure was obtained with a spirometer in the sitting position. The correlations between each abdominal muscle thickness and maximal expiratory pressure were determined by the Pearson correlation coefficient. RESULTS: The correlation coefficient between the rectus abdominis muscle and maximal expiratory pressure was 0.571 (P< .001). Correlation coefficients between the external oblique, internal oblique, and transverse abdominis muscles and maximal expiratory pressure were 0.297 (P = .066), 0.267 (P = .100), and 0.022 (P = .894), respectively. CONCLUSIONS: Our results indicate that the rectus abdominis muscle thickness might be more highly correlated with expiratory pressure production than the external oblique, internal oblique, and transverse abdominis muscle thickness.


Assuntos
Músculos Abdominais/diagnóstico por imagem , Músculos Abdominais/fisiologia , Expiração/fisiologia , Imageamento Tridimensional/métodos , Esforço Físico/fisiologia , Ultrassonografia/métodos , Humanos , Interpretação de Imagem Assistida por Computador/métodos , Masculino , Tamanho do Órgão/fisiologia , Pressão , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Estatística como Assunto , Adulto Jovem
20.
J Phys Ther Sci ; 27(8): 2605-10, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26356643

RESUMO

[Purpose] The purpose of this study was to investigate the effect of the timing of leg support elevation on the horizontal force acting on the buttocks in a reclining wheelchair. [Subjects and Methods] The participants were 17 healthy men. Two experimental conditions were tested: the leg-down and leg-up conditions. The back support was reclined at increasing angles, from the initial upright position (IUP), proceeding to the fully reclined position (FRP), and returned to the upright position (RUP). The posterior inclination phase was from IUP to FRP, and the returning inclination phase was from FRP to RUP. [Results] The horizontal force under the leg-up condition was significantly higher than that under the leg-down condition in all positions of back support. [Conclusion] The leg supports should be positioned downward before reclining the back support of a wheelchair.

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