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ACTIVATE YOUR CELLS
- Inversion Therapy
33 Ways the Body Responds to Rebounding
By Dr. Morton Walker and Albert E. Carter
The study of the human body is fairly interesting. The moment it becomes no less than amazing is when we understand what happens as the body is placed under the demands of movement and resistance we call exercise. Rebounding is an effective exercise that reduces your body fat; firms your arms, legs, thighs, abdomen, and hips; increases your agility; strengthens your muscles overall; provides an aerobic effect for your cardiopulmonary systems; rejuvenates your body when it's tired, and generally puts you in a state of mental and physical wellness. In fact, there are at least 33 fascinating ways the body responds to regular rebounding, detailed below:
Rebounding provides an increased G-force (gravitational load), which strengthens the musculoskeletal systems.
Rebounding protects the joints from the chronic fatigue and impact delivered by exercising on hard surfaces.
Rebounding helps manage body composition and improves muscle-to-fat ratio.
Rebounding aids lymphatic circulation by stimulating the millions of one-way valves in the lymphatic system.
Rebounding circulates more oxygen to the tissues.
Rebounding establishes a better equilibrium between the oxygen required by the tissues and the oxygen made available.
Rebounding increases capacity for respiration.
Rebounding tends to reduce the height to which the arterial pressures rise during exertion.
Rebounding lessens the time during which blood pressure remains abnormal after severe activity.
Rebounding assists in the rehabilitation of a heart problem.
Rebounding increases the functional activity of the red bone marrow in the production of red blood cells.
Rebounding improves resting metabolic rate so that more calories are burned for hours after exercise.
Rebounding causes muscles to perform work in moving fluids through the body to lighten the heart's load.
Rebounding decreases the volume of blood pooling in the veins of the cardiovascular system preventing chronic oedema.
Rebounding encourages collateral circulation by increasing the capillary count in the muscles and decreasing the distance between the capillaries and the target cells.
Rebounding strengthens the heart and other muscles in the body so that they work more efficiently.
Rebounding allows the resting heart to beat less often.
Rebounding lowers circulating cholesterol and triglyceride levels.
Rebounding lowers low-density lipoprotein (bad) in the blood and increases high-density lipoprotein (good) holding off the incidence of coronary artery disease.
Rebounding promotes tissue repair.
Rebounding for longer than 20 minutes at a moderate intensity increases the mitochondria count within the muscle cells, essential for endurance.
Rebounding adds to the alkaline reserve of the body, which may be of significance in an emergency requiring prolonged effort.
Rebounding improves coordination between the proprioceptors in the joints, the transmission of nerve impulses to and from the brain, transmission of nerve impulses and responsiveness of the muscle fibres.
Rebounding improves the brain’s responsiveness to the vestibular apparatus within the inner ear, thus improving balance.
Rebounding offers relief from neck and back pains, headaches and other pain caused by lack of exercise.
Rebounding enhances digestion and elimination processes.
Rebounding allows for deeper and easier relaxation and sleep.
Rebounding results in better mental performance, with keener learning processes.
Rebounding curtails fatigue and menstrual discomfort for women.
Rebounding minimises the number of colds, allergies, digestive disturbances and abdominal problems.
Rebounding tends to slow down atrophy in the ageing process.
Rebounding is an effective modality by which the user gains a sense of control and an improved self-image.
Rebounding is enjoyable!
People who rebound find they are able to work longer, sleep better, and feel less tense and nervous. The effect is not just psychological, because the action of bouncing up and down against gravity effectively stimulates the lymphatic system without trauma to the musculoskeletal system. This unique discovery is central to the reasons Rebounding has become one of the most beneficial forms of exercise ever developed.
Frequently Asked Questions about Inversion Therapy & Contraindications
1. How long should I invert?
This is probably the most commonly asked question about inversion. The answer really varies with different people. For the most part, we recommend beginners to start slowly: invert for only 1-2 minutes during the first week or two until you become comfortable, and then work up to longer periods of time as you feel necessary. The angle of inversion also affects the length of inversion time that is comfortable. The shallower the angle, the longer the time required. Most people will invert for 5 - 15 minutes once or twice a day. There is no real time limit - the important thing is to listen to your body. If you are at all uncomfortable, simply return upright.
Virtually all issues of discomfort that occur with new invertees are due to going too far, too fast. You are wonderfully designed to be upside down, but if you are like most people, you are detrained to be inverted. Just listen to your body, increasing the duration of inversion only as you feel comfortable.
2. To what degree should I invert?
Again, the answer varies with different people. Beginners should start at a mild angle (approximately 20-30 degrees beyond horizontal) for the first few weeks until you become comfortable with the operation of the table and are able to completely relax while inverted.
20 - 30 degrees: At this angle, your body begins to experience mild stretching to your muscles and joints, while benefiting from stimulated circulation, improved oxygen flow to the head, and repositioning of internal organs.
60 degrees (parallel with the rear legs of the table): This is the angle to which the average person experiences virtually all the benefits of inversion. Your spine receives the amount of traction it needs to completely decompress (once you are relaxed). Most people don't really need to go beyond this angle.
90 degrees (full inversion): In full inversion, your body hangs freely to be able to perform inverted exercises and stretching. You never really need to go to full inversion if you are not comfortable with it. Of course, those using the EZ-Up Inversion System or the Back Revolution System will only be able to fully invert. You may need to alternate between inverting and resting with your hands on the foam grips until you are used to the feeling of prolonged inversion. You may also want to hang for short periods of time to begin with until you become more comfortable.
Top athletes are one group that may enjoy the extra traction from full inversion. Strong muscles and ligaments need higher loads to decompress.
Intermittent traction / Oscillation Intermittent traction (alternating 20-30 seconds inversion with returning upright) or oscillation (rhythmic rocking back and forth) are actually the "preferred" methods of inversion, recommended by many doctors for stimulating circulation and waste removal in and around injured discs.
Virtually all issues of discomfort that occur with new invertees are due to going too far, too fast. You are wonderfully designed to be upside down, but if you are like most people, you are detrained to be inverted. Just listen to your body, increasing your angle of inversion only as you feel comfortable.
3. Does inversion cause strokes / popped blood vessels?
A medical study published in 1983 by Dr. Goldman and colleagues showed that inverted patients experienced an increase in blood pressure and internal eye pressure. The media widely reported the study, warning that stroke was a potential result of inversion.
Two years following the inversion study, Dr. Goldman reversed his original position, stating, "New research shows that you are at no more of a stroke risk hanging upside down than if you are exercising right side up." More in-depth research found that the body actually has mechanisms that prevent damage from hanging upside down. In fact, while oscillating (inverting with movement), some of the patients' blood pressures actually dropped a few points. (*Note: these studies were based on patients in generally good health. Make sure you review contraindications prior to inverting.)
Dr. Goldman stated that the warnings to the public about the dangers of inversion were "grossly inflated" and that "in the 15 years these devices have been in use, there has not been one single stroke case reported, nor any serious injuries." (This statement, to the best of our knowledge, is as true today as when Dr. Goldman made it 17 years ago).
Other universities, including Marquette, Iowa, and Portland studied inversion during this time, with results that also helped to vindicate Inversion as a healthy physical activity.
4. Why do I feel so much pressure in my head - is it normal to turn red?
This is very normal and is actually good for you, indicating increased blood flow to the brain, eyes, skin and hair. One preliminary study showed that the brain runs 7% faster and 14% more accurate while inverted! The feeling of pressure usually lessens over time as you become accustomed to inverting.
If you are a beginner and are uncomfortable with this feeling, it is OK to come up and rest a while. This is referred to as "intermittent" traction (alternating inversion with being upright) and is a good way to help get used to the inverted world. You can also try "oscillation" which is a rhythmic rocking back and forth.
5. How do I focus on the lower back / upper back / neck region?
Inversion is a natural form of gravity-assisted traction. This means that the amount of traction applied to various locations of the body is exactly the right amount! Every vertebra and related disc is just the right size to support the weight above it. The large discs in the lower back are the right size to support the 60% body weight that is above them. The small discs in the neck are just the right size to support the weight of the head. When inverted, the weight normally supported is just the right weight to apply traction.
Gentle stretching and exercise is beneficial to help decompress and mobilise the spine:
You may perform gentle stretching exercises to help move the muscles and connective tissues in the lower back area. In partial inversion try rotating gently from side-to-side, or slowly rocking your pelvis forward and backward.
If you have worked up to full inversion, abdominal exercises (sit-ups, crunches) can be beneficial to the lower back, since strong abdominal muscles are key for proper posture. On the inversion tables, you can try a gentle back extension by placing your hands behind your head on the bed frame and pushing your body in an arch away from the table. On the Back Revolution, you can perform partial to full back extensions (like reverse sit-ups), strengthening the muscles in your lower back.
Many people experience upper back pain as a result of stress and muscle tension. The key to relieving this pain is to totally relax while inverting. Try deep breathing exercises. Also, partner work can be beneficial - nothing is more relaxing than an inverted back and shoulder massage!
Movement is also very beneficial. Try rounding your shoulders forward and pushing them back. Also, stretch one arm at a time across your torso to extend those upper back muscles.
Again, movement can be beneficial. Try rotating your head from one side to the other. Partner massages to the base of the head and back of the neck are very relaxing (do not apply pressure to the front of the neck). You can also add gentle inverted traction to your neck by resting your arms behind your head at the base of your skull (don't pull, just add the weight of your arms).
6. What exercises do you recommend while inverted?
Partial inversion. Gentle stretching can be performed while partially inverted by crossing one arm over your body, gripping the opposite side of the table frame, and rotating up on one shoulder for a stretch. You can also arch the torso from side to side to loosen muscles and to help the mid- and lower spine to stretch.
Similarly, stress in the neck can be relieved by gently rotating the head to either side, plus lifting the head (do not sit up, only lift the head) or pushing back against the nylon cover while lifting the shoulders off the cover for a stretch in extension.
Full inversion. Only perform these exercises when you are comfortable with being fully inverted. Do not overdue it - as with any exercise to which your body is unaccustomed, you may experience sore muscles if you do too much too fast.
Inverted crunches. Place your hands on your chest or behind your head and lift your torso halfway to your knees.
Full sit-ups. This is the only way to perform a full sit up that is safe for your back. Your spine is in line with gravity, so the full sit up does not place a harmful load on the back. Place your hands behind your head or on your chest. Sit up all the way to your knees. You may need to place your hands behind your knees to help pull yourself up to a full sit up. Some people claim that 1 full inverted sit up is as difficult as 10 regular sit ups (without the strain on your back!) Users of the Back Revolution will only be able to perform partial sit ups.
Inverted squats. On the tables and racks, you are able to exercise your legs as well! You may want to steady yourself by placing each hand on the rear legs of the A-frame. Bending your knees, lift your entire body toward the sky. This action is similar to a standing squat, except that you are utilising your leg muscles to pull your body weight up instead of resisting your body weight.
Rotational stretching. You can use the A-frame, support structure or door frames to aid with stretching. Reach with one arm to the opposite side of the structure and pull, rotating your torso to one side. Do the same with the opposite arm.
Back extensions. For the inversion table, reach your hands over each shoulder and grab onto the bed frame. Push your body out away from the bed, arching your back out. (Do not use the rear legs of the A-frame for extensions, as that may place your body weight outside the safe support area of the A-frame). For the Back Revolution, cross your arms across your chest and arch backward slowly.
Added traction. On the inversion table, reach your hands forward and grab onto the crossbar of the A-frame. Pull gently to feel added traction to your lower back. On the Back Revolution, grab hold of the lower handles and pull gently to feel added traction to your lower back.
THE MOST IMPORTANT THING TO REMEMBER IS NOT TO OVERDO IT. INVERSION IS NOT A "NO PAIN, NO GAIN" SITUATION. AS SOON AS YOU FEEL LIKE YOU HAVE HAD ENOUGH, STOP!
7. I'm feeling some aching in my back when I return upright from inverting. Is this normal?
There could be several causes for this:
You did too much too soon: If you are new to inversion, your body is not used to being inverted (chances are you haven't hung upside down since 2nd grade!) By inverting too much too soon, you are probably going to be a little sore. You can liken inversion to beginning any new exercise programme. If you overdo it on the first day, you will probably pay for it later!
You returned upright too fast: When inverted, your vertebrae have a chance to separate and the discs can decompress. This action reduces pressure on the nerves that run through your spinal column. When you ascend (return upright) on the inversion table, your spine "re-compresses" - the vertebrae return to their normal position and the pressure on the discs increases again. If you come up from inversion too fast, you might place sudden pressure on the nerves that run through the spine, which can cause some pain. Instead, you should invert to a mild angle (30-40 degrees) for just a few minutes. Come back up only to the horizontal position (lying flat). Remain horizontal for several minutes to allow your spine to slowly re-compress. Then slowly come up the rest of the way.
Always keep in mind that if you experience extreme pain, or if you always experience pain while inverting, you should discontinue inversion until you have had a chance to talk with your doctor.
8. Is the inverting detrimental if you should have heart disease or high blood pressure?
It is true that people should not invert if they have uncontrolled high blood pressure. However, inversion can cause a state of relaxation that results in a drop in heart rate and BP (sometimes even lower than at a resting state). Some doctors have used inversion as a treatment for high BP. If you have concerns, you should check with your doctor before inverting.
9. Will inversion therapy help with a bulged disc?
When inverted, the natural pull of gravity allows a separation of your vertebrae, which lessens the pressure on the discs in between each vertebrae. The action of increasing the space margins between the vertebrae can actually create a mild suction in the disc, which may help encourage the bulged disc return to its proper place.
The main benefits are realised by increased circulation and waste elimination to injured discs. In the opinion of many medical professionals, several sessions of intermittent traction are the best way to help the body dissolve a bulged disc.
The length of healing time will vary with different people. However, it has been our experience that you should hang three or more times every day for short sessions at an angle most comfortable for you. Do not overdo it - this is not a "no pain, no gain situation."
10. Will inversion help with headaches or migraines?
Some people have found that inverting on a regular basis can actually help reduce the frequency of migraine occurrences. However, we do not have any medical studies to specifically back this claim. I would advise not to invert if you are in the middle of experiencing a migraine, as it could potentially worsen your headache.