Quantitative Electroencephalography and Surface Electromyography Correlations upon Predictable and Unpredictable Perturbation in Older Adults.

Background: Quantitative Electroencephalography (qEEG) is a non-invasive method used to quantify electrical activity over the cortex. QEEG provides an accurate temporal resolution of the brain activity, making it a useful tool for assessing cortical function during challenging tasks.

Objective: This study aimed to investigate postural adjustments in older adults in response to an external perturbation.

Cortical Activity During Postural Recovery in Response to Predictable and Unpredictable Perturbations in Healthy Young and Older Adults: A Quantitative EEG Assessment.

Introduction: To investigate the effects of predictable and unpredictable external perturbations on cortical activity in healthy young and older adults.

Methods: Twenty healthy older and 19 healthy young adults were exposed to predictable and unpredictable external perturbations, and their cortical activity upon postural recovery was measured using a 32-channel quantitative encephalography. The absolute spectral power and coherence z-scores of cortical waves were analyzed through a 3-way mixed ANOVA.

Relationship Between Hamstring Flexibility and Extensor Muscle Activity During a Trunk Flexion Task.

Objective: The purpose of this study was to investigate the relationship between hamstring flexibility and electromyography (EMG) muscle parameters in back and lower limb extensor muscles during a trunk flexion task.

Methods: Thirty healthy women aged 18 to 30 years with normal hip movement were recruited for this study. Hamstring muscle flexibility was measured with the 90-90 active straight leg raise test.

Head and neck extension more than 30° may disturb standing balance in healthy older adults.

Although there is clinical evidence of postural instability at extreme angles of head extension, the effects of lower angles on balance have been not investigated. This study aimed to investigate the effects of different head and neck extension angles on standing balance in older adults, and to determine the critical angle of instability. Twenty-eight healthy older adults were tested at 0°, 20°, 30° and 40° head and neck extension.

Trunk postural control during unstable sitting differs between patients with patellofemoral pain syndrome and healthy people: A cross-sectional study.

Background: Patellofemoral pain syndrome (PFPS) is a common orthopedic problem with a high prevalence among young women. Patients with PFPS have altered trunk muscle activity, impaired postural control and greater displacement of the center of pressure (COP) while standing. Training in unstable sitting, by putting more emphasis on trunk sensory receptors, may improve trunk proprioception by minimizing the role of the lower extremities.

Effects of Integrated Neuromuscular Inhibition Technique on pain threshold and pain intensity in patients with upper trapezius trigger points.

Introduction: Upper trapezius trigger points are among the most common causes of neck pain. This study aimed to investigate the effects of integrated Neuromuscular Inhibition Technique (INIT) on pain intensity and threshold.

Materials & Methods: Thirty two female participants with upper trapezius trigger points were recruited in this study.

Evaluating the Cross-Cultural Adaptation, Reliability, and Validity of the Persian Versions of the Copenhagen Neck Function Disability Scale and Neck Bournemouth Questionnaire.

Study Design: A cross-sectional study.

Objective: To evaluate cross-cultural adaptation and psychometric properties of the Copenhagen Neck Function Disability Scale (CNFDS) and Neck Bournemouth Questionnaire (NBQ) in patients with chronic nonspecific neck pain.

Summary Of Background Data: CNFDS and NBQ are among the most popular scales to investigate aspects of life in patients with chronic neck pain.

Clinical Evaluation of Scapular Positioning in Patients With Nonspecific Chronic Low Back Pain: A Case-Control Study.

Objective: The purpose of this study was to investigate the position of scapula in patients with nonspecific chronic low back pain.

Methods: A total of 17 participants with a history of nonspecific chronic low back pain and 17 healthy participants in the same age, sex, and weight range were enrolled in this case-control study. Lateral scapular slide test and Lennie test were used for clinical evaluation of scapular position in the frontal plane using a tape measure.

Effectiveness of treadmill training on balance control in elderly people: a randomized controlled clinical trial.

Unlabelled: Physical exercise would improve postural stability, which is an essential factor in preventing accidental fall among the elderly population. The aim of this study is to examine the effectiveness of treadmill walking on balance improvement among the elderly people. A total of 30 community dwelling older adults with a Berg Balance Scale score of 36-48 and the ability to walk without aid were considered and divided into control (n=15) and experimental (n=15) groups.

Is Abdominal Muscle Activity Different from Lumbar Muscle Activity during Four-Point Kneeling?

Background: Stabilization exercises can improve the performance of trunk and back muscles, which are effective in the prevention and treatment of low back pain. The four-point kneeling exercise is one of the most common types of stabilization exercises. This quasi-experimental study aimed to evaluate and compare the level of activation between abdominal and lumbar muscles in the different stages of the four-point kneeling exercise.

Sacroiliac joint manipulation attenuates alpha-motoneuron activity in healthy women: a quasi-experimental study.

Objective: To determine whether sacroiliac joint (SIJ) manipulation decreases α-motoneuron activity and increases the pressure pain threshold (PPT) over the posterior superior iliac spine (PSIS) in healthy women.

Design: Quasi-experimental study.

Setting: A university medical center.

The prevalence of musculoskeletal pain in male cigarette smoking students at shiraz university of medical sciences, iran.

Background: The rising trend of smoking cigarettes, especially among the youth, has become a great concern in Iranian society. Not only does smoking cigarettes harm one financially, but also it will cause immense damage to the smoker as well as the society. This paper investigated the prevalence of musculoskeletal pain and the factors affecting it in young smokers.

Low back pain patients demonstrate increased hip extensor muscle activity during standardized submaximal rotation efforts.

Study Design: A comparative study of trunk and hip extensor muscle recruitment patterns in 2 subject groups.

Objective: To examine for changes in recruitment of the hip and back extensor muscles during low level isometric trunk rotation efforts in chronic low back pain (CLBP) subjects by comparison with matched asymptomatic control subjects.

Summary Of Background Data: Anatomic and biomechanical models have provided evidence that muscles attaching to the thoracolumbar fascia (TLF) are important for providing stabilization to the lumbopelvic region during trunk rotation.