The Hypervibe G14 is for people who are really going to use frequencies above 20 hertz. I am not saying the Zaaz 20K, the Vibratrim Vt500 or the Vmax Pulser 2 is not good because they only go to 14 to 15 hertz.
The G14 serves only a special purpose for those doing high acceleration training. Those doing this for just lymphatic drainage should have no problem with machines that go up to 15 hertz since only 5 to 6 hertz is the speed that allows enough time to create a negative pressure in the lymph system.
I only recommend the G14 for those who are going to be doing serious workouts and not just looking for bone density, circulation, or lymph drainage. There are plenty of other more affordable machines than the Hypervibe G14 for those purposes. Because it's a dedicated machine for working out it does not have the rails on the sides. I always use the front handlebar in front of me to lean back. If I am leaning on my heels I feel the G force go up my body but if I lean back without the front handle bar I will fall backwards so for doing high acceleration training and leaning on my heels as close to 100% as I can, it's much easier with the handlebar.
Walking after using the G14 for 10 minutes -
If I walk immediately after a 10 minute session, I barely can walk down the stairs and if I just walk across the room I walk as if all the energy was drained out of my legs. It feels kinda like doing 5 sets of leg presses in the gym. It was way more difficult to walk normal after a 10 min session than any leg workout at the gym.
Itchiness: On level 15 or higher, I itch but more so on levels closer to 25 hertz. The machines that go up to 14 hertz I really don't itch unless its on the spiral mode like on the Vmax Pulser 2 or the Vibratrim Vt500 but the G14 doesn't need the spiral since the higher speeds makes up for it. The spiral machines are the 2nd most effective based on my reviews for those that only are getting a motor that goes up to 15 hertz. The lower hertz motors still are great for most people but I feel it more in my legs and not up my back due to less g force.
Fast twitch: Just standing on the Hypervibe G14 engages my fast twitch muscle reflexes. It makes the muscles contract without trying to do this. The body naturally will contract the muscles to protect internal organs and the joints when the body senses a quick change to activate a reflex. The 20 hertz speed will still make these reflexes but the involuntary muscle contractions are much stronger at 25 hertz and on the 35 hertz G17 even stronger. Those that have a weaker body should not go to the highest levels until they are ready. Just standing on the G14 at high speeds can fatigue the muscles. It is super hard to stabilize the muscles in the legs and lower back to maintain my posture on the G14. The body will alway try to keep itself balanced until it is too fatigued. That is the time when I get off the machine if I have over done it. I recommend the virtual trainer so people can follow along and go at a recommended pace by the manufacturer from their studies. Also, the legs can become very warm just by standing on it due to the involuntary muscles working so hard. Once the itching gets uncomfortable, I know it is time for me to get off the plate.
Noise: It is quiet just like all the others that go up to 15 hertz but after that on the speeds 20 to 25 it is much louder. The Hypervibe G14 has a lot of power that I would put this on the first floor so people living below wouldn't be disturbed. If using it for lymph drainage on the low levels it should be fine.
Ballistic impact: You still have to bend your knees a little but it does not have the jarring that the 12 and 13mm amplitude machines have on the high levels unless the knees are really bent. The G17 is the only one that I can turn it up to 35 hertz without bending my knees at all. My eyes did not water at all. If I did this on a Nitrofit I would probably have a headache in less than a minute. It feels like being punched in the back of the head with a hammer 1200 times (20 hertz x60 seconds) on the Nitrofit if my legs weren't bent. The Nitrofit like I said is the closes machine to the G14. The workout is way way way more intense but for athletes that don't have a bad back and strong knees it is my most preferred machine. The persons who has weak knees would prefer the G14 and G17 much more. I like the G14 much more on level 5 or 6 which is the speed I use for lymph drainage. The Zaaz has 10mm amplitude while the G14 has 11mm. So, there is more displacement on the G14. But for levitational force, the G17 beats them all. Levitational force is not the same as a high amplitude plate that gives more levitation. For bone density and high acceleration training, the more time my heels are in contact with the plate the more I use my fast twitch muscles and itchiness much sooner.
If anyone is not trained and their legs are not in good condition, the hypervibe G14 delivers more gforce than any other machine. The displacement on the G14 at 25 hertz times 11mm amplitude is 275mm of displacement. The Nitrofit has 22 hertz and 13 amplitude (286mm of displacement). The difference is so close, like 1 extra up and down vibration in 1 second. The Nitrofit is a little too high for many people and on the tippy edge some people may need a strap around their legs to avoid sliding off. The G14 is much easier to stay on. The body takes in way more G force due to higher levitational force on the G14 but the Nitrofit is more intense but due to higher levitation the heels float on the plate more than the heel time on the G14.
Greenness: The latest Hypervibe G14 has the greenest motor and tilt table construction of all the machines in its class. It only uses 300 watts. The Nitrofit uses 900 watts. There are some other knock offs of the Hypervibe that are sold in other countries that are not UL listed to sell in Canada or the USA. They also go to 25 hertz. I get people that think I am in their country that think I can fix them and tell me the motor in their machine is smoking and giving off a burnt smell. I hear this all the time on brands that I never heard of. I am not saying this as a fact but it is more than obvious that Hypervibe re-engineered the Galileo (now known as the Vibraflex) but didn't copy it exactly. So, Hypervibe has a patent on their machine and so far since the Hypervibe Performance (the original back in 2008), no one has copied it. It costs next to nothing to run a 300 watt motor. I have also tested the motor with my laser thermometer and although not a continuous duty motor, it stayed cool compared to the 1000 watt motors out there.