Oscillating (pivotal or see-saw)-Best for fitness, therapy & health
Tri-Planer-Tri-Plainer Vibration (Lineal)-Best for specialized training
Very high frequency vertical micro-vibrations (1 to 4 min.) are created by this machine. This
style ot machine can be uncomfortable for some users and is used mainly for high level fitness
training. Some use tri-planer machines to rest their feet on. If they are in a wheel chair for
example. Others perform sit ups and squats on the machine. Tri-planers are not recommended
for those that are not in top shape and can be very uncomfortable for older users.