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

NCT ID: NCT01545986

Last Updated: 2012-03-07

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 38 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2009-09-30
• Study Completion Date: 2011-12-31

Brief Summary

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.

Detailed Description

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.

Conditions

Osteoarthritis, Knee

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

High Velocity Exercise

The high velocity exercise group performed the concentric contraction phase of resisted exercise in one second or less. This group performed sit to stand exercise, walking, curbs, and stairs as fast as was comfortable without an increased limp. Other exercises were performed at the participant preferred rate.

Group Type: EXPERIMENTAL

Exercise

Intervention Type: BEHAVIORAL

Participants attended standardized exercise (ex) sessions twice a week for six weeks for 12 sessions. Group speed differed for concentric contractions, sit to stand ex, walking, curbs, and stairs. The low velocity ex group performed a concentric contraction in two seconds, and high velocity group in one second or less. End range concentric hold, eccentric contraction, repetition (rep) rest and set rest were the same. Open chain ex was performed at 50% of one Repetition Maximum (RM) x 10 reps x one set and then 80% of 1RM x 10 reps x two sets. Curb height and 1RM was assessed at the first, fifth and ninth sessions. Manual stretching, balance ex, sit to stand support, level of aerobic ex, gait training, and functional training were assessed and progressed at any session.

Low Velocity exercise

The low velocity exercise group performed the concentric contraction phase of resisted exercise in two seconds. This group performed sit to stand exercise, walking, curbs, stairs, and other exercises at the participant preferred rate.

Group Type: ACTIVE_COMPARATOR

Exercise

Intervention Type: BEHAVIORAL

Participants attended standardized exercise (ex) sessions twice a week for six weeks for 12 sessions. Group speed differed for concentric contractions, sit to stand ex, walking, curbs, and stairs. The low velocity ex group performed a concentric contraction in two seconds, and high velocity group in one second or less. End range concentric hold, eccentric contraction, repetition (rep) rest and set rest were the same. Open chain ex was performed at 50% of one Repetition Maximum (RM) x 10 reps x one set and then 80% of 1RM x 10 reps x two sets. Curb height and 1RM was assessed at the first, fifth and ninth sessions. Manual stretching, balance ex, sit to stand support, level of aerobic ex, gait training, and functional training were assessed and progressed at any session.

Interventions

Exercise

Participants attended standardized exercise (ex) sessions twice a week for six weeks for 12 sessions. Group speed differed for concentric contractions, sit to stand ex, walking, curbs, and stairs. The low velocity ex group performed a concentric contraction in two seconds, and high velocity group in one second or less. End range concentric hold, eccentric contraction, repetition (rep) rest and set rest were the same. Open chain ex was performed at 50% of one Repetition Maximum (RM) x 10 reps x one set and then 80% of 1RM x 10 reps x two sets. Curb height and 1RM was assessed at the first, fifth and ninth sessions. Manual stretching, balance ex, sit to stand support, level of aerobic ex, gait training, and functional training were assessed and progressed at any session.

Intervention Type: BEHAVIORAL

Other Intervention Names

Rehabilitation

Eligibility Criteria

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

• Minimum Eligible Age: 60 Years
• Maximum Eligible Age: 89 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Helen Hayes Hospital

OTHER

Sponsor Role: lead

Responsible Party

Marie A. Kardys Kelly

Primary Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Marie A. Kelly, DHS

Role: PRINCIPAL_INVESTIGATOR

Helen Hayes Hospital

Locations

Helen Hayes Hospital

West Haverstraw, New York, United States

Countries

United States

Other Identifiers

09-04

Identifier Type: -

Identifier Source: org_study_id