فهرست مطالب

Journal of Rehabilitation Sciences and Research
Volume:1 Issue: 2, Jun 2014

  • تاریخ انتشار: 1393/10/01
  • تعداد عناوین: 5
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  • Zahra Rojhani, Shirazi *, Marzieh Saadat Page 25
    Background
    Previous studies have investigated different effects of muscle fatigue on body systems. However, there are no reports on the effect of fatigue protocol and its level on musculotendinous stiffness (MTS) of the tricep-surae.This study was designed to compare the effects of 2 levels of submaximal fatigue contraction on MTS of triceps-surae.
    Methods
    Twenty female students by simple randomized sampling participated in this study. Triceps-surae musculotendinous stiffness was measured before and after two fatigue protocols. The fatigue protocols were comprised of a continuous isometric voluntary plantar flexion contraction (25% and 70% maximum voluntary contraction) until the contraction could no longer be maintained. The free oscillation technique was used to measure MTS of the triceps-surae. A Kistler force plate was used to measure the force applied.
    Results
    Musculotendinous stiffness decreased immediately after both fatigue protocols (P≤0.05). Data analysis with RM ANOVA showed that there was no significant difference between the two protocols with respect to the decrease in MTS stiffness of the triceps-surae. Moreover, the decrease in stiffness did not change for 15 min after the two fatigue protocols (P>0.05).
    Conclusion
    Musculotendinous stiffness of the triceps-surae decreased significantly after both fatigue protocols, and there was no significant difference between the two protocols with respect to change in triceps-surae musculotendinous stiffness. This result may be due to similar type of contraction in protocols, the learning effect, or the effect of central fatigue.
    Keywords: Musculotendinous stiffness, Fatigue, Triceps, surae
  • Mehdi Wandadi, Vahid Rashedi*, Atta Heidari Page 30
    Background
    Exposure to loud music from sources such as portable music players (PMP), especially among adolescents, can lead to noise-induced hearing loss. The aims of this study are as follows: 1) investigate the prevalence of headphone use in Iranian University students by assessing their behavior, 2) determine the type of headphones used, and 3) ascertain the type of music player used.
    Methods
    In this cross-sectional descriptive study, 250 students from Hamadan University of medical sciences and health services were randomly selected to fill out a questionnaire.
    Results
    Overall, 91.2% of students were found to use headphones, 10.4% of which used headphones more than 1 hour a day, and 52% of them used volume setting higher than three fourths of the output capacity. The most common music player was a mobile phone, and the most common headphone type was the inserted type. Tinnitus was reported among 34.4% of users following the use of personal music player.
    Conclusion
    The use of personal music players amongst students was found to be very high in the study setting.
    Keywords: Prevalence, Portable music player, Students
  • Mania Sheikh, Hossein A. Hosseini* Page 33
    Background
    Gait disorder is a common motor complication after stroke. Studies have revealed that conventional physiotherapy cannot manage this disorder efficiently; therefore, more studies regarding efficient treatment protocols are crucial. The purpose of this study was to investigate the effect of compelled weight-bearing approach on muscle activation patterns during walking in individuals with stroke.
    Methods
    24 hemiparetic patients participated in this study. Patients were randomly divided into 2 groups: experimental and control. The experimental group received increased weight bearing on the paretic leg via a shoe lift in addition to physical therapy for 6 weeks. The control group received only physical therapy. Laboratory assessments included weight-bearing symmetry ratio and electromyographic parameters recored from the medial gastrocnemius, tibialis anterior, rectus femoris and biceps femoris. The amplitude and duration of electromyographic activity for each subject was then calculated during the stance and swing phases of their gait cycle. All measurements were compared within and between groups after the termination of treatment.
    Results
    After treatment, weight-bearing symmetry ratio improved significantly in the experimental group. Additionally, the electromyographic activity of paretic medial gastrocnemius increased significantly during the stance phase while activity duration of paretic rectus femoris decreased significantly in swing phase. In the control group, the weight-bearing symmetry ratio didn’t change significantly. Only activity duration of non-paretic rectus femoris decreased significantly in swing phase.
    Conclusion
    The results show that compelled weight bearing on the paretic side improve amplitude and the timing for activity of some muscles in the lower limbs during walking.
    Keywords: Rehabilitation, Electromyography, Walking, Stroke
  • Narges Meftahi, Soha Bervis, Shohreh Taghizadeh*, Farahnaz Ghafarinejad Page 40
    Background
    At the present time, massage has become a popular therapy employed in complementary medicine. There is evidence showing that back massage might have many positive psychological effects, possibly due to having many autonomic nervous system afferent inputs. One of the frequent positions during massage is prone position. However, there has been limited research investigating the effect of back massage in the prone position on blood pressure (BP) and heart rate (HR). The present study planned to investigate the changes of blood pressure and heart rate after back massage in prone position.
    Methods
    Sixty-one healthy women were divided into two groups. Group one lay prone and was given a 15-minute massage while group two just lay prone for 15 minutes. Immediately prior to and after interventions, systolic and diastolic blood pressure and heart rate were measured in both groups. To assess within group differences, paired t-test was used. Independent t-test was also used to assess between group differences.
    Results
    The results showed that systolic blood pressure decreased significantly after massage and also in the group only lying prone (P<0.05), with no significant difference between groups (P>0.05). Changes of diastolic blood pressure and heart rate were not significant in either group.
    Conclusion
    Massage and lying prone both can cause a decrease in systolic blood pressure. Massage was not seen to be more efficient than lying prone.
    Keywords: Massage, Blood pressure, Heart rate, Prone position
  • Amin Kordi Yoosefinejad, Fatemeh Jabari, Mahnaz Setooni* Page 44
    Background
    ALS is the most devastating form of motor neuron disease, and the chance of survival is 3 to 5 years after the diagnosis is made. The pathogenesis of the disease is unknown. Several upper and lower motor neuron symptoms such as weakness, gait bradykinesia, and muscle atrophy have been reported. The core muscles are considered to be the center of the functional kinetic chain due to the links with upper and lower limbs.
    Methods
    The patient in this case study was a 42 year-old woman suffering from ALSfor two years prior to the study. She had typical upper and lower motor symptoms, but her chief complaints were inability to walk, standing balance impairment, and a tendency to fall posteriorly. She performed core stabilization exercises, which were done three times per day. She was followed for three months.
    Results
    Core stabilization exercises improved her quality of life, and she could walk independently after three months of exercise. In addition, her tendency toward falling posteriorly was completely alleviated.
    Conclusion
    Core stabilization exercises were beneficial to the patient, and she was satisfied because her quality of life had improved.
    Keywords: Amyotrophic Lateral Sclerosis, Stabilization exercise, ADLs