Research and News
Posts tagged elastic resistance
Are elastic resistance squats better than free weight squats?
Mar 1st
The squat exercise is used primarily for hip and knee strengthening. It is considered one of the most fundamental strengthening exercises for strength and power in the legs. Elastic bands have been used to add resistance to the squat exercise while using barbell free weights to offer more dynamic resistance at the top of the squat movement as the resistance of the band is at its highest. No studies have directly compared the effects of squatting with elastic resistance versus free weights.
In a study published in the Journal of Strength and Conditioning Research, researchers compared squatting with equivalent work loads of elastic-resisted and isotonic free-weight squats in trained weight lifters. Subjects squatted with each type of resistance while muscle activity and biomechanical variables were measured. The band-resisted squats resulted in higher force, velocity, power, and quadriceps muscle activity near the top of the squat, which includes the first part of the eccentric phase, as well as the last part of the concentric phase.
The researchers concluded that elastic resistance produces similar resistance patterns as standard free weights, except at the bottom of the squat, where the bands are on less stretch and thus, less tension. More importantly, the researchers stated that elastic band squats More >
Thera-Band® exercise helps improve bone density and reduce falls in osteoporosis
Feb 24th
It’s been well-established that exercise has numerous health benefits, yet it is only relatively recently that exercise has been shown safe and effective at improving health and quality of life in older adults.
Recent recommendations from the Centers for Disease Control (CDC) and American College of Sports Medicine include strengthening exercises for older adults at least twice a week. Strength training can improve muscular strength, power and endurance in older adults. In addition, strength training can increase bone mass or decrease bone mass loss which is particularly important in women with osteoporosis. Falls in osteoporotic women in particular often lead to fractures of the hip, back, and arm.
Researchers in Germany set out to determine if a well-rounded exercise program that included Thera-Band® resistance bands would be effective at increasing bone density, decreasing falls, and improving cardiovascular risk factors in older women. In the study, published in the Archives of Internal Medicine, 246 women over 65 years old were randomly assigned to either a high-intensity/low volume “well-rounded” exercise program, or a low-intensity “wellness” exercise control group. The 18 month exercise program included 2 group sessions per week and 2 home-based sessions per week.
The well-rounded exercise group protocol included cardiovascular warm-up exercises, upper body strengthening exercise using More >
Adding elastic resistance to free weight bench press better for muscular strength and power
Feb 18th
Free weight isotonic resistance using barbells continues to be the ‘gold standard’ for strength training for power lifting. Recently, strength and conditioning professionals have added elastic resistance to free-weight exercises such as the bench press and squat to increase strength, power and speed. The additional downward force of the band during the early phases of the lift provides increased eccentric loading which may provide greater stimulus for gains in strength and power. In theory, the greater eccentric velocities may shorten deceleration time, which may increase the rate of force development with training.
Adding ‘variable resistance training’ using elastic bands is also thought to provide increased resistance where the joints have more leverage in earlier phases of the lift, with decreasing loads during periods of less leverage near later phases of the movement such as the bottom of the squat. When reviewing the literature on the benefits of adding elastic resistance bands to free weight exercises, some studies suggest it improves strength and power, while others do not.
A study published in the Journal of Strength and Conditioning Research compared traditional bench press training with and without the addition of external variable resistance loads (elastic bands and heavy chains). 36 Division-I AA football players were More >
Thera-Band® resistance or dumbbells? New research supports both in the clinic
Feb 7th
The debate of elastic resistance versus isotonic resistance
Elastic resistance is commonly used in rehabilitation exercises, and has been shown to increase strength and function in over 100 randomized controlled trials (www.thera-bandacademy.com). Even with this amount of clinical evidence, elastic resistance is sometimes criticized because of the difficulty in quantifying intensity. Despite the fact that force elongation charts are available to quantify elastic resistance intensity, it is sometimes difficult to use these clinically. Because of this limitation, few studies have compared elastic and isotonic resistance directly because of the intensity-dosing issue.
Quantifying EMG and RPE of elastic and isotonic resistance
Researchers in Denmark compared elastic and isotonic dumbbell resistances for muscle activation and perceived exertion levels. Healthy females performed 3 different exercises with standard dumbbells ranging from 2 to 7.5 kg, and Thera-Band elastic tubing (red, green, blue, black and silver). The researchers developed a chart comparing isotonic and Thera-Band elastic resistance stretched 125 to 150%.
Thera-Band® elastic color Isotonic Resistance Red 2 kg Green 3 kg Blue 4 kg Black 5 kg Silver 7.5 kgEach subject randomly performed 3 exercises with both types of resistance: standing lateral raise, shoulder external rotation at 0° of abduction, and seated wrist extension. The elastic tubing was stretched More >
Thera-Band® program helps improve lower extremity strength and biomechanics in female athletes
Feb 1st
Anterior cruciate ligament (ACL) tears occur in about one in every 3000 Americans; 80% of these injuries are non-contact, often requiring surgical reconstruction. Female athletes have a higher incidence of ACL injury, likely due to biomechanical differences compared to males. Research has focused on exercise programs that help improve these biomechanics in order to prevent ACL injuries. Dr. Dan Herman MD, PhD received a research award from Thera-Band Academy to investigate the effects of a strengthening program on jump-landing biomechanics of female athletes at the University of North Carolina. The protocol utilized Thera-Band® elastic bands and exercise balls.
Initially, Dr. Herman published a study concluding that while the protocol was effective at improving strength, the biomechanics of the athletes remained unchanged. He concluded that strengthening alone was not sufficient, and set out to find what needed to be combined with the training program. His subsequent study combined the Thera-Band strengthening protocol with video-assisted feedback, and he compared the combined intervention to a group receiving feedback only. Dr. Herman and his colleagues found that the group receiving both feedback and strengthening improved their biomechanics more than the feedback-only group. The paper won the 2008 O’Donoghue award from the American Orthopedic Society for Sports Medicine, given to the best More >
