A Comparative Analysis of Two Types of Exercise on Outcomes Following Total Knee Arthroplasty

A Comparative Analysis of High Velocity and Standard Low Velocity Exercise Training on Rehabilitation Outcomes Following Total Knee Arthroplasty

The purpose of this study was to compare the effects of two exercise programs, using low velocity (LV) and high velocity (HV) contractions, on outcomes of individuals who have undergone total knee arthroplasty (TKA). The experimental hypothesis was that individuals performing HV exercise, compared to LV, would exhibit superior outcomes.

The most effective type of exercise has not been identified for individuals who undergo total knee arthroplasty (TKA). High velocity (HV) exercise when compared to low velocity (LV) exercise produces greater gains in power and certain functional activities in older adults. The use of HV exercise for patients who undergo TKA has not been investigated.

Inclusion Criteria:

• Adults aged 60- 89 years of age.
• primary unilateral TKA 10-21 days prior to the outpatient PT evaluation
• received inpatient rehabilitation at Helen Hayes Hospital

Exclusion Criteria:

• Any other lower extremity joint or back pain (not inclusive of recent Total knee arthroplasty) rated greater than four out of ten with weight-bearing
• any other lower extremity joint replacement surgery
• diagnosis of osteoporosis with history of fractures, uncontrolled hypertension, unstable cardiac or pulmonary problems, neurological disease affecting motor control, uncontrolled diabetes
• chest pain or shortness of breath on stair-climbing
• requirement of human assistance to walk in addition to the ambulation device
• inability to follow instructions to perform testing and/or exercise,
• participants who stated that they would not be available to complete 12 exercise sessions
• individual adherence with performance of a home exercise program (HEP) less than five of seven days at the end of the treatment period