Lumbopelvic Movement Control: Effect of Injury History, and the Role of Cortical Control and Its Practical Application 2
Condition: Biomechanical Phenomena
Study type: Interventional

Summary: 
      Hip motor control ability is an important parameter for preventing sport injuries in lower
      limbs, and the training of hip motor control can enhance the lower extremity movement
      performance. Previous studies have demonstrated the benefits of motor imagery with action
      observation (AOMI) on motor control and muscle strength improvements, which also revealed
      that AOMI combined with physical training (AOMI-PT) can lead to better outcomes than physical
      training (PT) alone. Besides, monitoring the neurophysiological changes of brain activation
      and the functional connection to the peripheral muscular activation after training helps to
      understanding the mechanisms on the training effects.

      Therefore, the aim of this study is to compare (1) the cortical control mechanisms between 3
      types of motor control training strategies; and (2) the effects of 3 types of motor control
      training on hip motor control performance in healthy subjects.
    

Detailed description: 
      Hip motor control ability is an important parameter for preventing sport injuries in lower
      limbs, and the training of hip motor control can enhance the lower extremity movement
      performance. Previous studies have demonstrated the benefits of motor imagery with action
      observation (AOMI) on motor control and muscle strength improvements, which also revealed
      that AOMI combined with physical training (AOMI-PT) can lead to better outcomes than physical
      training (PT) alone. Besides, monitoring the neurophysiological changes of brain activation
      and the functional connection to the peripheral muscular activation after training helps to
      understanding the mechanisms on the training effects.

      Therefore, the aim of this study is to compare (1) the cortical control mechanisms between 3
      types of motor control training strategies; and (2) the effects of 3 types of motor control
      training on hip motor control performance in healthy subjects.

      The investigators will recruit 45 healthy subjects and compare the effect of three types of
      motor control training (physical training, motor imagery with action observation, physical
      training combined motor imagery with action observation) on Y balance test performance,
      cortico-muscular coherence (CMC), and task-related spectral power (TRSP) changes. Due to only
      few studies about the issue, we will recruit extra 15 healthy athletes for pilot study to
      investigate the reliability of the research measurements and refine the protocols.

      Chi squared test is used to examine the group differences such as gender, dominant side and
      activity level. The 2-way mixed analysis of variance (ANOVA) will be used to compare the
      intervention effect on motor control test and CMC between groups. One-way repeated measures
      ANOVA will be used to investigate the neurophysiological changes on brain activation during
      AOMI training, and the changes of AOMI-PT and PT group will be compared by independent
      t-test. The alpha level was set at 0.05.
    

Intervention name(s): motor imagery with action observation; physical training; combine physical training and motor imagery with action observation
Intervention type(s): Other; Other; Other
Intervention description(s): Standing clamshell exercise with elastic band, sliding, and Romanian deadlift exercise will be instructed to the subjects with video, and they will practice each exercise for 3 times in physical to familiarize with the program. Then, the subjects will mentally simulate each exercise with video 10 times for a set, 3 sets totally. With 2 min interval between each sets, it will take approximately 8 minutes to finish each movement. It will also take 3 min for resting between each program.; Standing clamshell exercise with elastic band, sliding, and Romanian deadlift exercise will be instructed to the subjects with video, and they will practice each exercise for 3 times in physical to familiarize with the program. Then, the subjects will physically perform each exercise with supervision of investigator 10 times for a set, 3 sets totally. With 2 min interval between each sets, it will take approximately 8 minutes to finish each movement. It will also take 3 min for resting between each program.; Standing clamshell exercise with elastic band, sliding, and Romanian deadlift exercise will be instructed to the subjects with video, and they will practice each exercise for 3 times in physical to familiarize with the program. Then, each exercises will be mentally simulated with video for a set and physically performed with supervision of investigator for 2 sets, 10 times for each set and 3 sets totally. With 2 min interval between each sets, it will take approximately 8 minutes to finish each movement. It will also take 3 min for resting between each program.
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Treatment
Keywords: motor control; imagery training; corticomuscular coherence; event-related synchronization/ desynchronization