Impact of Force Control of Hip Abductor Muscles in Healthy Adults and Individuals With Parkinson's Disease

Condition(s) studied

Investigational drug(s) / intervention(s)

Age: We compare the young, middle-aged, and old groups

Parkinson's disease (PD): We compare the healthy group and PD group.

Study summary

Both aging and Parkinson's disease (PD) negatively affect postural control and increase the risk of falls, with frontal plane balance being particularly challenging for these populations. While previous studies have mainly focused on sagittal plane balance, the contribution of hip abductor muscles remains unclear, especially regarding their force production and control abilities. Therefore, this study aims to investigate hip abductor muscle force production and force control, and to examine whether these factors are associated with postural control, gait, and balance performance in individuals across different ages and those with PD.

Eligibility

Primary outcome measure(s)

• Maximal force — Baseline
  The maximal force of lower extremity muscles
• Rate of torque development — Baseline
  The ability to rapidly generate muscle force
• Force steadiness — Baseline
  The ability to maintain a constant force output during a submaximal contraction
• Walking speed — Baseline
  The time taken by participants to walk a standardized distance
• Step Length — Baseline
  The linear distance between the two ankles, typically expressed in centimeter(cm).
• Cadence — Baseline
  The number of steps taken per minute (SPM)
• Single Support Time — Baseline
  The duration within the gait cycle when only one foot is in contact with the ground, typically measured in seconds or as a percentage of the total gait cycle.
• Double Support Time — Baseline
  The portion of the gait cycle where both feet are in contact with the ground, indicating the transition phase between steps, expressed as a percentage of the gait cycle or in seconds.
• Swing Time — Baseline
  The portion of the gait cycle where the foot is not in contact with the ground, moving forward to the next step. It is usually expressed as a percentage of the total gait cycle or in seconds.
• Center of Pressure (COP) Velocity in Balance Tasks — Baseline
  The speed at which the COP moves, calculated over the duration of the balance task. Higher velocities may reflect more dynamic balance adjustments or instability. Unit：millimeter per second(mm/s)
• Center of Pressure (COP) Area in Balance Tasks — Baseline
  The area covered by the COP trajectory during the balance task, providing an estimate of the sway envelope. A larger area might indicate poorer balance control. Unit：square millimeter(mm\^2)
• Timed Up-and-Go Test — Baseline
  Tthe time an individual takes to stand up from a chair, walk 3 meters, turn around, walk back, and sit down.
• Four Square Step Test — Baseline
  Participants will be required to perform four square step test by changing directions while stepping forward, sideway, and backward over a low obstacle as fast as possible.

Trial sites (2)

More Chang Gung Memorial Hospital trials in Taiwan

Other trials for the same condition