Research and News
Posts tagged hip
Thera-Band exercise program can improve lower limb biomechanics in females
Jan 30th
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Female athletes are particularly susceptible to anterior knee pain and injury to their anterior cruciate ligament (ACL). This increased risk is thought to result from poor dynamic control of the hip and knee, particularly when the foot hits the ground. The inability to control hip adduction, knee valgus, and internal rotation in the transition from an open- to closed-chain position of the leg may result from weakness of the hip abductor and external rotator muscles.
Researchers have suggested that females have weakness of their hip abductors, extensors, and external rotators (Prins et al. 2009). Exercise programs using Thera-Band® elastic resistance for females with anterior knee pain have been successful and featured previously in the Academy blog. These programs include core stabilization, as well as hip and knee strengthening exercises.
In the January 2012 journal, Medicine and Science in Sports and Exercise, Brazilian researchers published a study of 28 healthy female athletes. They wanted to determine if their exercise program could improve lower limb biomechanics, which theoretically may help reduce injuries. The subjects were assigned to either an 8 week training group or non-exercising control group.
The More >
Thera-Band Hip Exercise Reduces Anterior Knee Pain
Jan 15th
Anterior knee pain is often associated with hip muscle weakness of the abductors, extensors and external rotators. Dr. Vladimir Janda noted these muscles were particularly susceptible to inhibition and weakness. Hip weakness is particularly prevalent in females with anterior knee pain.
This hip weakness is thought to result in abnormal forces occurring at the knee during stance, allowing the femur to adduct more than normal, possibly leading to excessive force and/or abnormal tracking of the patellofemoral joint.
Traditionally, anterior knee pain was thought to result from quadriceps weakness, particularly from the vastus medialis muscle. Recent biomechanical and epidemiological data suggest however, that hip weakness may play a more important role in the etiology of patellofemoral pain.
Several studies have evaluated the use of elastic resistance in reducing patellofemoral pain. In a systematic review of elastic resistance in patellofemoral pain, Page concluded “Exercise interventions including elastic resistance in patients with PFPS are effective at reducing pain and improving function and strength.” Many protocols in the review, however, included both hip and knee strengthening…leaving the question of the effectiveness of hip exercises.
In the January 2012 issue of the Journal of Orthopedic and Sports Physical Therapy, Dr. Khalil Khayambashi and colleagues performed a randomized controlled trial of More >
Active Aging Today Series: Thera-Band Exercises for Hip Osteoarthritis and Replacement
Dec 28th
Exercises for Hip Osteoarthritis and Replacement by Dr. Phil Page
Hip osteoarthritis and replacement are often associated with residual weakness of the hip muscles. Thera-Band Resistance Bands and Stability Trainers are often used for hip osteoarthritis programs both before and after hip replacement. Download and read the article with exercises here.
REFERENCE: Page P. Exercises for people with hip osteoarthritis and hip replacement. Active Aging Today, 1(4), 2010. Available online here
Visit the Thera-Band Academy Hip Osteoarthritis Resource Center here
Abduction exercise after hip replacement: is there an optimal progression?
Aug 23rd
Patients undergoing total hip replacement often have weak hip abductor muscles before and after surgery. One of the most common hip exercises is sidelying hip abduction using an ankle weight. While this may be an effective exercise to activate the gluteus medius muscle, open-chain, non-weight bearing hip abduction is not specific to the function of the gluteus medius as a pelvic stabilizer in single-leg stance. Resisted lateral walking with a Thera-Band® Band Loop or Tubing with Cuffs is an example of such a closed-chain exercise as the patient steps away from the involved leg.
Researchers at the University of Kentucky evaluated electromyographic (EMG) levels of 4 exercises in total hip patients between 7 and 32 weeks post-operative. Dr. Cale Jacobs and colleagues were interested to see if there was a progression of muscle activation to guide clinical decisions about hip abduction exercise prescription. They published their findings in the Journal of Arthroplasty. The 4 exercises included 2 non-weight bearing and 2 weight-bearing exercises:
- Standing hip abduction with cuff weight at 1% of bodyweight, lifted to 30 degrees
- Sidelying hip abduction with cuff weight at 0.5% of bodyweight, lifted to 50% of leg length
- Standing hip abduction with uninvolved leg to 30 degrees
- Lateral walk with Thera-Band resistance band attached with More >
Exercise with Thera-Band® Stability Trainers helps improve dynamic balance in patients with hip osteoarthritis and replacement
Jun 1st
According to the American Academy of Orthopedic Surgeons, there are over 200,000 hip replacements performed each year in the United States. The most common reason for hip replacement is osteoarthritis, the most common form of arthritis. “Hip School,” an exercise program for patients with osteoarthritis and hip replacement was developed in Germany in 1995 by orthopedic surgeon Thomas Horstmann and physiotherapist Georg Haupt. In the program, small groups of patients (10-15) exercise under the supervision of a physical therapist. Home exercises are also performed 3 to 4 times per week. The exercises focus on strength and balance exercises for 20 minutes, including:
- 1-leg balance, 15-30 seconds for 5 reps on each leg
- 1-leg balance with opposite leg movement for 1 to 3 sets of 15-25 reps
- Hip lift for 3 sets of 15-25 reps
- 2-leg calf raise with 2-second hold, 1 to 3 sets for 15 to 25 reps.
- Patients progress from a stable surface to Thera-Band Stability Trainers.
In a paper published in the Journal of Geriatric Physical Therapy, German researchers wanted to compare their Hip School participants with a non-exercising control group of hip patients. Each group was tested before and after 3 months using an oscillating platform (Posturomed®) to measure their static and dynamic balance. More >
