Investigation of Activation of Latissimus Dorsi Muscle Segments During Functional Reach Activity in Chronic Stroke Patients
Condition: Stroke
MeSH terms: Stroke
Study type: Observational [Patient Registry]

Summary: 
      Latissimus Dorsi (LD); Medial sacrum, lumbar vertebrae and lower thoracic vertebrae 10-12
      lateral to the spinous processus. It is a fan-like wide muscle that connects to the inferior
      angle of the scapula and ribs, adheres to the anterior surface of the proximal humerus and
      continues with aponeurosis of the contralateral Gluteus Maximus below. The activation of the
      LD muscle during the functional reach activity, which we use most frequently in daily living
      activities, affects the upper extremity and trunk movements. Therefore it is important muscle
      that affects the quality of movement.

      The study include individuals with stroke that diagnosed by the neurologist and include
      healthy subjects. During sitting activity, they will be required to reach three different
      distances in the sagittal and scapular plane: arm length, 125% of the arm length and end
      point where it can reach the modified functional reach test. During the activity,
      electromyography (EMG) activation of latissimus dorsi, anterior deltoid and erector spina
      muscles will be examined with electromyographic device.

      Hypothesis originating from the investigation:

      H1: Latissimus dorsi muscle segments show different activation during functional reach
      activity.

      H2: Activation of latissimus dorsi muscle segments is affected by reaching direction during
      functional reach activity.

      H3: Activation of latissimus dorsi muscle segments is affected by reaching distance during
      functional reach activity.
    

Detailed description: 
      Measurements will be made during the sitting activity of the individuals included in the
      study. Individuals will be asked to reach midsternal height cups in two separate planes,
      sagittal and scapular, at arm's end, 125% of arm's distance and end point where it can reach
      according to modified functional reach test.

      Muscle activation of latissimus dorsi, erector spina and anterior deltoid muscles will be
      measured by superficial electromyographic measurement. Muscle activation according to SENIAM
      for erector spina and anterior deltoid will be evaluated. For latissimus dorsi, activation
      will be measured in six segments separated according to anatomic dissection.

      Reach activity will be performed 3 times on each side and at 1 minute intervals.
    

Intervention name(s): Electromyographic device
Intervention type(s): Other
Intervention description(s): An 8-channel surface EMG system (Noraxon Telemyo DTS system, Scottsdale, USA) will be used to measure signals from muscles during surface electromyography measurements.
Observational model: Other
Time perspective: Prospective
Sampling method: Non-Probability Sample
Study population: 
        Hacettepe University Neurological Rehabilitation Unit
      
Keywords: latissimus dorsi; stroke; electromyography; reaching activity; muscle activation