Effectiveness and feasibility of eccentric and task-oriented strength training in individuals with stroke

Area of Science:

• Neurology
• Rehabilitation Medicine
• Exercise Physiology

Background:

• Stroke frequently impairs upper limb function, necessitating effective rehabilitation strategies.
• Strength training shows promise for functional recovery post-stroke, but optimal methods remain unclear.

Purpose of the Study:

• To evaluate the efficacy and feasibility of a combined eccentric and task-oriented strength training program for individuals with chronic stroke.
• To assess improvements in upper limb strength and function following the intervention.

Main Methods:

• Eleven participants with chronic stroke were randomized into two groups, alternating between eccentric strength training (EST) and task-oriented strength training (TOST).
• Intervention duration was eight weeks, with four weeks of each training type.
• Upper limb strength was measured using a hand-held dynamometer (HHD), and function was assessed with the Action Research Arm Test (ARAT).
• Feasibility was gauged via the Intrinsic Motivation Inventory (IMI), adherence rates, and drop-out numbers.

Main Results:

• Significant improvements were observed in ARAT scores (mean difference 7.3, p < 0.05) and shoulder and elbow strength (mean differences 23.96 N and 27.41 N, respectively; p < 0.001 for both).
• Participants reported high motivation (81% on IMI) for both EST and TOST.
• High adherence rates and a low drop-out rate (one participant) indicated good feasibility.

Conclusions:

• A combined eccentric and task-oriented strength training regimen is an effective method for enhancing upper limb strength and function in individuals with chronic stroke.
• The intervention is feasible and well-tolerated, suggesting its potential as a valuable rehabilitation tool.