Research and News
Posts tagged elastic resistance
Adding elastic resistance to free weight bench press better for muscular strength and power
Feb 18th
If you're new here, you may want to subscribe to our email updates for new blog posts. Thanks for visiting!
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 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 >
Thera-Band® elastic bands as effective as expensive weight machines
Jan 27th
Muscle strengthening activities are now recommended as part of a regular exercise program. The recent Physical Activity Guidelines issued by the Centers for Disease Control (CDC) in the United States recommend strengthening exercises for all adults at least twice a week. Unfortunately, only about 20% of adults participate in regular strengthening exercises (CDC, 2006). Access to strength training equipment is frequently cited as a barrier to meeting this recommendation. Researchers in Spain compared 2 training programs using either weight machines or Thera-Band® resistance bands. They wanted to determine if there were any differences between band or machine strength training. 45 middle-aged women were randomly assigned an elastic group, a machine group, or a non-exercising control group. The 2 strength training groups performed the same exercises, using the OMNI scale of perceived exertion to be sure both groups trained and progressed at the same intensity. The periodized program lasted 10 weeks for 2 sessions per week. After the training, both groups significantly increased their muscle mass and decreased their fat mass, as well as improved in muscular endurance. There was no significant difference between the groups; both groups improved significantly more than the control group. Researcher Drs. Juan Carlos Colado and N. Travis Triplett noted that elastic bands were More >
Thera-Band® Exercises Increase Muscle Size in Spastic Cerebral Palsy
Dec 21st
Children with cerebral palsy (CP) often have leg weakness due to reduced muscle size. Researchers in the UK examined the effects of a 10 week training program of progressive strengthening of the plantar flexors in 13 children with spastic CP. The children began with Thera-Band-resisted plantar flexion in long-sitting and progressed to standing heel raises. They performed 3 to 4 sets of exercises at a 6-12 Repetition Maximum (RM) resistance with a 2-minute rest between sets. Once subjects were able to perform 6 calf raises, they continued that exercise until they could perform 12. Each session started and ended with calf stretches in standing. Exercises were performed 4 times per week, including 3 sessions at home. After the 2 ½ month training program, muscle volume increased 14-17% and was maintained 3 months after training. Interestingly, while the participant’s strength increased, their functional measures did not. The authors concluded that strengthening interventions may be one of the most important interventions in the short term for children with CP in order to support long-term functional gains.
Visit the Thera-Band Academy Cerebral Palsy Center Here
McNee AE, et al.. 2009 . Increases in muscle volume after plantarflexor strength training in children with spastic cerebral palsy . Dev Med More >
