Affichage des articles dont le libellé est Knee. Afficher tous les articles
Affichage des articles dont le libellé est Knee. Afficher tous les articles

mardi 10 juin 2014

Raising from Seiza


A friend of mine had a Math teacher, a long time ago, who would individually comment on the test results of each student. The guy was a great motivator, one of his classical saying was :

"Mr Smith,  there were to ways to solve this problem: The right way, ... and yours"


As we get older, it becomes increasingly important to save our energy and optimize its use.

Basically: apply the littlest effort to achieve the maximum effect.

Last February I hurt (again) my right knee: I was performing a classical Jujitsu move when my knee unexpectedly collapsed at an unusual and painful angle. 

Since then, I have avoided walking as much as as I used to (and I used to walk a lot). This considerably weakened the quadriceps of both my legs, and the my right calf. I am presently trying to slowly rebuild them by gently practicing my Iai from Seiza and Tatehiza positions. And here is a little trick I practice, which you might want to try.

At the end of each waza, you stand up from a half kneeling position : one knee is up with its foot flat on the ground, the other knee is on the floor.

Your position in this stance is important, you can do it the hard way or the smart way.

If instead of using a short stance to lift your torso vertically using mostly your quadriceps, you adopt a slightly longer stance and push forward with your back foot, you will be surprised how easier it becomes. You will raise almost effortlessly with more stability.



To do this, I take a stance about 6" longer than usual. You need to figure out what is good for you. 

Of course, if you are tough, you still can do it the hard way !


mardi 1 mai 2012

Arnica Montana

Last night, one student rushing to sweep me with o soto gari (this is the sweep used in Yoshukai Karate Ippon Kumite # 4), swept me sideways instead of backwards.

Needless to say, my knee did not appreciate this sideways bending. It popped, generating a rather sharp pain, I rolled to the ground holding my knee and immediately thought: "Well, there won't be any Karate or Sword for a loooong time...".

We quickly applied a cold pad on the joint, I was able to walk, and went to my bag where I had a tube of Arnica Gel. I rubbed it on my knee. The rubbing happened at hte lastest 5 minutes after the accident. AFter I came home, I applied more Arnica to my knee.

In the morning, there was no swelling of the knee, but I could not fully extend it, neither could I bend it more than 45 degrees without discomfort. At least, I could walk ! I took an extra serving of Glucosamine and Hyaluronic acid potion.

In the evening, I was able to teach a Iaido class, I practiced all waza standing up, no seiza or tatehiza today ! I was extremely suprised that I did not feel more discomfort.

It is possible that the injury was not very serious. However, I clearly felt the knee popping out of alignment, and could feel several times some parts move inside it, which did not use to.

I really believe this amazing healing is due to the very early use of this Arnica gel.

A few years ago, someone broke a Bo (1 3/4" Diamter) on my right ankle. ( I forgot to jump...) I thought it was broken. I immediately rubbed it with Arnica gel, there was no bruise the next day.





WHen you use this medicine, the main thing is to apply it very quickly after the injury. The faster you use it, the more efficient it is.

I usually bring my gel from Europe. However, you can get it now in the US at reasonable prices (under $10.00). Considering how efficient this is, I suggest you keep a tube of it in your bag.

dimanche 18 décembre 2011

Older people with visual impairment can benefit from Tai Chi

Researchers from the Centre for East-meets-West in Rehabilitation Sciences, The Hong Kong Polytechnic University designed and conducted a 16 week trial involving forty people aged over 70.  
 
After this trial, the Tai Chi participants showed significant improvements in knee proprioception (awareness of the position of one's limbs) and in their visual and vestibular ratios (ability to balance) compared to a control group.
 


Care home residents in the Tai Chi group were taught a modified 8-form Yang style Tai Chi routine and practiced this in 90 minute sessions, three times a week for 16 weeks. 

Participants in the control group learned to play the Djembe, a percussion instrument.

Dr. Tsang said: "... Our study shows that Tai Chi can be a suitable form of exercise for those with visual impairment and indeed assists with improving their balance control. ..."

Read the Full article

vendredi 20 mai 2011

Tai Chi and Balance - Proprioception of the Knee and Ankle


study published by the British Journal of Sport Medicine shows that elderly people who regularly practice Tai Chi not only show better proprioception of the ankle and knee joints than sedentary people. Which would explain why Tai Chi improves balance in its practitioners.

Not only long term Tai Chi practitioners have better ankle and knee joint kinesthesis than sedentary controls but also their ankle joint kinesthesis is better than regular swimmers/runners. Furthermore, the latter did not perform any better in ankle and knee joint kinesthesis tests than their sedentary counterparts. 

 

The postural control system is the control circuit between the sensory sources, the central nervous system, and the musculoskeletal system. Proprioceptors and visual and vestibular (internal ear) centres contribute information to the central nervous system on body position and balance.

Other studies also showed that :
  • All age groups are more dependent on proprioception than on vision for the maintenance of balance.
  • Disruption of proprioceptive input was the most important determinant of quantitative balance performance in subjects older than 80 years.
  • Different kinds of exercise have different effects on balance. Comparison of the effects of proprioceptive exercise, bioenergetic physical activities (swimming, cycling, or jogging), and no exercise on postural control in elderly people shows that muscular strength was significantly increased in the bioenergetic exercise group, but proprioceptive exercise appeared to have the greatest effect on balance control.
Swimming and running are two of the most common exercises practiced by elderly people; they are excellent forms of aerobic exercise, and provide good training stimuli for cardiopulmonary function and muscle strength. Compared with Tai Chi, swimming and running involve cyclic repetitive actions. But awareness of joint position and movement is not emphasized during these exercise forms but highly in Tai Chi. This probably explains why the swimmers/runners did not have better scores for knee and ankle kinesthesis in this study.

It is interesting that the effects of Tai Chi on proprioception were different in the knee and ankle joints. An old Tai Chi proverb states, “In Tai Chi, the feet act as roots”. Also most Tai Chi forms are performed in a low position, which puts load on the muscles which stabilize hip, knee and ankle. The continuous changes of stances and steps cause more variations in ankle joint position, (toes or heels outward or inward, up or down). 

Moreover, while making a stride, feet moves are slow and deliberate. "Control your weight, don't let your weight control you".

These movements greatly improve and help to retain the sensitivity of proprioceptors located in the joint capsules, ligaments, tendons, and muscles.

Ankle proprioception is very important for the elderly to maintain proper postural control. When it comes to control of postural stability, the elderly rely more on hip movements, while young people rely on ankle movements. Therefore the impact of Tai Chi on ankle proprioception is of great benefit in improving and maintaining balance in old people.

The decline in proprioception with age is an important contributing factor to falls in the elderly. This study shows that, compared with other common activities, long term Tai Chi exercise is more valuable for maintaining balance control in the elderly. 


Practice, Slow... 
 

mardi 4 novembre 2008

Ancient Chinese Exercise Relieves Knee Pain


Released October 22, 2008

Tai chi is effective in the treatment of pain and physical impairment in people with severe knee osteoarthritis, according to research presented this week at the American College of Rheumatology Annual Scientific Meeting in San Francisco, Calif.

Read the full article at : http://www.newswise.com/articles/view/545482/

Source: American College of Rheumatology (ACR)

TAI CHI Helps cut pain of Knee Arthritis

(Reuters; October 26, 2008) - The traditional Chinese form of exercise known as tai chi can help reduce pain and physical impairment in people who have knee arthritis, researchers said on Saturday.

In their study, one group of people in their 60s with severe knee osteoarthritis performed tai chi for an hour twice a week for 12 weeks while a similar group did the same amount of conventional stretching exercises over the same period.

Those who did Tai Chi experienced greater pain reduction, less depression and improvements in physical function and overall health, researchers led by Dr. Chenchen Wang of Tufts Medical Center in Boston reported at a meeting of the American College of Rheumatology in San Francisco.

(Reporting by Will Dunham; Editing by Julie Steenhuysen and Peter Cooney)
. . . read entire article at:

http://www.reuters.com/article/healthNews/idUSTRE49P0VB20081026