Publications by authors named "Shahla Zahednejad"

9 Publications

  • Page 1 of 1

Transabdominal Ultrasound Imaging of Pelvic Floor Muscle Activity in Women With and Without Stress Urinary Incontinence: A Case-Control Study.

J Obstet Gynaecol Can 2020 Nov 13;42(11):1358-1363. Epub 2020 Apr 13.

Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Objective: Transabdominal ultrasound (TAU) is an easy and noninvasive way to evaluate and retrain pelvic floor muscle (PFM) function. The purpose of this study was to compare PFM activity in women with and without urinary incontinence (UI) by measuring bladder base displacement (as a marker for PFM activity) using TAU during PFM contraction, Valsalva's maneuver, and abdominal curl.

Methods: Sixty-three women, aged 20-55 years, volunteered to participate in this cross-sectional study: 21 were continent and 42 had UI (21 stress urinary incontinence [SUI] and 21 mixed urinary incontinence [MUI]). Mean bladder base displacement in millimeters was measured to evaluate differences between the three groups (continent, SUI, and MUI) and also between the continent and UI groups during the performance of each maneuver.

Results: No significant differences were seen between the three groups in bladder base elevation during PFM contraction (P > 0.05). Descent of the bladder base during Valsalva's maneuver and abdominal curl was significantly greater in women with SUI and MUI than in women in the continent group (P < 0.05). Comparison of the continent and UI groups showed no significant differences in elevation of the bladder base during PFM contraction, while descent of the bladder base was significantly greater in women with UI than in women in the continent group during Valsalva's maneuver and abdominal curl (P < 0.05).

Conclusion: TAU indicated that bladder base descent was greater in women with SUI and MUI than those in the continent group during the performance of maneuvers that increased intra-abdominal pressure. This effect may be due to decreased PFM performance in women with urinary incontinence.
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http://dx.doi.org/10.1016/j.jogc.2020.03.015DOI Listing
November 2020

The Physiological Cost Index and Some Kinematic Parameters of Walking and Jogging in Blind and Sighted Students.

Iran J Med Sci 2020 Jan;45(1):16-22

Social Determinants of Health Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Background: Vision plays an important role in supporting efficient locomotion. The present study aimed to measure the physiological cost index (PCI) and some kinematic parameters of preferred walking and jogging in blind and sighted students.

Methods: A cross-sectional study was conducted among blind (n=18) and sighted (n=27) students aged 8-16 years. The following parameters were measured during a standard test procedure: step length (meter), cadence (steps/min), mean speed (meter/min), and the PCI of preferred walking (PCI) and jogging (PCI) over a distance of 100 meters.

Results: Univariate linear regression analysis revealed that the weight of an individual as well as the test duration were significant predictors of heart rate (HR) and PCI. Overall, the PCI (beats/meter) of sighted (PCI=0.22±0.08 and PCI=0.24±0.07) and blind students (PCI=0.27±0.07 and PCI=0.31±0.08) were significantly different (all P≤0.05). In addition, the speed of preferred walking (PW) in sighted students was significantly higher than that of the blind students (67±8 versus 62.8±9 m/min; all P≤0.05), while this difference was insignificant in jogging mode (105±9 versus 102±11 m/min).

Conclusion: Although the blind students were familiar with the ambient environment and the walking route, they demonstrated a different pattern of PW and jogging modes with respect to kinematic parameters. We also demonstrated that the blind students spent more energy (i.e., PCI) to achieve a lower or equal gait kinematics compared to the sighted students.
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http://dx.doi.org/10.30476/ijms.2019.45386DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983280PMC
January 2020

Clustering of patients with chronic low back pain in terms of physical and psychological factors: A cross-sectional study based on the STarT Back Screening Tool.

J Back Musculoskelet Rehabil 2020 ;33(4):581-587

Background: The STarT Back Screening Tool (SBT) is a multidimensional questionnaire consisting of physical and psychological factors which categorizes the patients in the low, medium or high risk subgroups.

Objective: To investigate the relationship between SBT-based subgrouping and clustering of patients with LBP using uni-dimensional psychological, clinical and physical examination measures.

Methods: One hundred and fifty-seven patients with chronic LBP completed the SBT and uni-dimensional psychological, disability and pain questionnaires. Physical impairments were evaluated through the Physical Impairment Index (PII). Hierarchical and K-means methods were used for cluster analysis. Between-clusters differences and the association between the clusters and SBT-based subgrouping were investigated.

Results: Three clusters were identified. The derived clusters were labeled severe, moderate and mild physical-psychological-distress clusters, because pain intensity, disability, psychological and physical factors were relatively high, moderate or low, respectively. Most of the patients in moderate and mild physical-psychological distress clusters were categorized as medium risk based on SBT. The mean difference for the PII was higher than that of psychological factors between moderate and mild physical-psychological-distress clusters.

Conclusions: Patients in low and high risk subgroups of SBT were sufficiently differentiated, but patients in a medium risk subgroup had a different profile based on PII. Including additional physical factors in the SBT may be required to better differentiate among patients.
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http://dx.doi.org/10.3233/BMR-181484DOI Listing
December 2020

Relationships between muscular impairments, pain, and disability in patients with chronic nonspecific low back pain: a cross sectional study.

J Exerc Rehabil 2018 Dec 27;14(6):1041-1047. Epub 2018 Dec 27.

IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy.

To clarify the significance of mechanical impairments, pain, and functional limitations as predictors of chronic low back pain (LBP). Ninety patients with chronic nonspecific low back pain (CNSLBP) were prospectively studied with clinical tests and questionnaires. Changes in muscle extensibility and endurance tests were evaluated and changes assessed in LBP intensity on numeric rating scale 0-10 and severity with Oswestry Disability Index (ODI) 0-100. In the present study we found significant associations between the 4 muscle extensibility and 2 endurance tests and pain at nonspecific patients with chronic LBP (<0.005). The 2 muscle extensibility and 1 endurance tests were in complete equilibrium with ODI disability and hence showed similar results (<0.005). The associations between the muscle extensibility and endurance tests and pain were significantly elevated in patients with nonspecific chronic LBP.
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http://dx.doi.org/10.12965/jer.1836374.187DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6323331PMC
December 2018

Prevalence of Work-Related Musculoskeletal Disorders in Iranian Physical Therapists: A Cross-sectional Study.

J Manipulative Physiol Ther 2018 Jul - Aug;41(6):503-507. Epub 2018 Aug 8.

Nursing and Physical Therapy Department, Faculty of Health Sciences, University of León, Ponferrada, León, Spain.

Objective: The purpose of this study was to determine the prevalence of musculoskeletal disorders among Iranian physical therapists.

Methods: A cross-sectional study was carried out. An online survey was completed by Iranian physiotherapists from June 2017 to August 2017. A total of 333 online questionnaires were sent, and 319 questionnaires were fully completed and used for data analysis. The Persian version of the Nordic Questionnaire was the main outcome measurement. This questionnaire identified work-related pain or discomfort in 9 parts of the body, including: (1) neck, (2) shoulder, (3) elbow, (4) wrists, (5) upper back, (6) lumbar, (7) thighs, (8) knee, and (9) ankle.

Results: The findings of this study showed the prevalence of musculoskeletal disorders was 94% in Iranian physiotherapists. Lumbar (65%), neck (57.4%), shoulder (50.2%), upper back (49%), and knee (45.5%) were the most prevalent regions of these disorders. While ankle (19.7%) and elbow (21.6%) disorders showed the lowest prevalence.

Conclusion: The prevalence of work-related musculoskeletal disorders was high in Iranian physiotherapists, especially in the lumbar, neck, shoulder, and upper back regions.
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http://dx.doi.org/10.1016/j.jmpt.2018.02.003DOI Listing
October 2019

Psychometric Properties of the Persian Version of Care Dependency Scale in Nursing Homes.

Rehabil Nurs 2017 Jul/Aug;42(4):216-222

1 Department of Counseling and Educational Psychology, Ahvaz University of Shahid Chamran, Ahvaz, Iran2 Department of Rehabilitation Administration, Musculoskeletal Rehabilitation Research Center, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran3 Institute of Healthcare and Wellbeing, NHL University of Applied Sciences, Leeuwarden, The Netherlands4 Iranian Research Center on Aging, Department of Rehabilitation Administration, University of Social Welfare and Rehabilitation, Tehran, Iran5 Department of Physical Therapy, Musculoskeletal Rehabilitation Research Center, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Purpose: The purpose of the study was to examine the psychometric properties of the Persian version of the Care Dependency Scale (CDS) in nursing homes.

Design: Instrument development.

Methods: The English version of the CDS was translated into Persian. A convenience sample of 140 (100 older people without dementia and 40 patients with dementia) Persian-speaking people were selected from the nursing homes in Ahvaz, Iran. Cronbach's alpha, discriminant validity, and construct validity (exploratory factor analysis) were examined.

Findings: Exploratory factor analysis indicated that the CDS has two factors, including psychosocial and somatic factors. Discriminant validity showed that the CDS can differentiate patients with dementia from the older adults without dementia.

Conclusions: The results of the study showed that the Persian CDS is a reliable and valid scale when used in nursing homes.

Clinical Relevance: The Persian version of the CDS can help clinicians and nurses to assess patients' need and the degree of care dependency among older adults in Persian-speaking areas.
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http://dx.doi.org/10.1002/rnj.270DOI Listing
February 2018

Comparison of the Effect of 8 weeks Aerobic and Yoga Training on Ambulatory Function, Fatigue and Mood Status in MS Patients.

Iran Red Crescent Med J 2013 Jun 5;15(6):449-54. Epub 2013 Jun 5.

School of Psychology, Semnan University, Semnan, IR Iran.

Background: Multiple Sclerosis (MS) is a disease of the central nervous system that results in many symptoms including mobility limitation and fatigue.

Patients And Methods: Thirty-one MS patients, all female with mean of age of 36.75 years and Expanded Disability Status Scale scores (EDSS) of 1.0 to 4.0 were recruited. Subjects were randomly assigned to one of the three groups: treadmill training, yoga or control groups. Treadmill training and yoga practice consisted of 8 weeks (24 sessions, thrice weekly). The control group followed their own routine treatment program. Balance, speed and endurance of walking, fatigue, depression and anxiety were measured by Berg Balance scores, time for 10m walk and distance for a two minute walk, Fatigue Severity Scale (FFS), Beck Depression Inventory (BDI) and Beck Anxiety Inventory (BAI), respectively.

Results: Comparison of results have shown that pre- and post-interventions produced significant improvements in the balance score, walking endurance, FFS score, BDI score and BAI score in the treadmill training group and yoga group. However, 10m walk time decreased in the treadmill training group but did not show any clear change in the yoga group. Moreover, the analysis showed significant differences between the treadmill training group and yoga group for BAI score.

Conclusions: These results suggest that treadmill training and yoga practice improved ambulatory function, fatigue and mood status in the individuals with mild to moderate MS.
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http://dx.doi.org/10.5812/ircmj.3597DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3840829PMC
June 2013

Kinetic factors of vertical jumping for heading a ball in flexible flatfooted amateur soccer players with and without insole adoption.

Prosthet Orthot Int 2014 Jun 4;38(3):204-10. Epub 2013 Jul 4.

Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Background: According to literature, little is known regarding the effects of orthotic management of flatfoot on kinetics of vertical jump.

Objectives: To compare the kinetic and temporal events of two-legged vertical jumping take-off from a force plate for heading a ball in normal and flexible flatfoot subjects with and without insole.

Study Design: A functional based interventional controlled study.

Methods: Random sampling method was employed to draw a control group of 15 normal foot subjects to a group of 15 flatfoot subjects. A force platform was used to record kinetics of two-legged vertical jump shots.

Results: Results indicate that insole did not lead to a significant effect on kinetics regarding anterior-posterior and mediolateral directions (p > 0.05). Results of kinetics related to vertical direction for maximum force due to take-off and stance duration revealed significant differences between the normal and flexible flatfoot subjects without insole (p < 0.05) and no significant differences between the normal foot and flexible flatfoot subjects with insole adoption (p > 0.05).

Conclusions: These results suggest that the use of an insole in the flexible flatfoot subjects led to improved stance time and decrease of magnitude of kinetics regarding vertical direction at take-off as the main feature of two-legged vertical jumping function.

Clinical Relevance: Adoption of the insole improved the design of the shoe-foot interface support for the flexible flatfoot athletes, enabling them to develop more effective take-off kinetics for vertical jumping in terms of ground reaction force and stance duration similar to that of normal foot subjects without insole.
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http://dx.doi.org/10.1177/0309364613492790DOI Listing
June 2014

Reliability and validity of the Tegner and Marx activity rating scales in Iranian patients with anterior cruciate ligament injury.

Disabil Rehabil 2011 14;33(23-24):2305-10. Epub 2011 Apr 14.

Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Purpose: The aims of this study were to culturally translate and validate the Persian version of Tegner and Marx activity rating scales and to investigate their psychometric properties in a sample of patients (n = 100) with anterior cruciate ligament (ACL) injury.

Method: Four questionnaires were completed by the respondents: Tegner and Marx activity scales, Knee injury and Osteoarthritis Outcome Score (KOOS) and Short-Form 12 Health Survey (SF-12). The Tegner and Marx were re-administered to 45 patients in the retest session, with time interval of 2-6 days between the two sessions. Test-retest reliability and internal consistency were assessed using intra-class correlation coefficient (ICC) and Cronbach's alpha, respectively. To evaluate construct validity of Tegner and Marx compared to similar and dissimilar concepts of KOOS and SF-12, the Spearman's rank correlation was used.

Results: Both Tegner and Marx activity scales have a high ICC level. The minimum Cronbach's alpha level of 0.70 was exceeded by Marx scale. In terms of construct validity, most of a priori hypotheses were confirmed.

Conclusions: The Persian version of Tegner and Marx seems to be suitable for Iranian patients with ACL injury. Future studies are needed to investigate the psychometric properties of these questionnaires for Iranian patients with different knee problems.
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http://dx.doi.org/10.3109/09638288.2011.570409DOI Listing
March 2012