thanks to all for the constructive replies/feedback.
I agree with JC that jogging is good for strengthening bones and if I was to do it on soft surfaces ( eg running around the local park/oval) then I'm sure this would asisst my general leg muscle strength but I'm kinda after stuff that I can do during my normal Monday to Friday.
Like lots of people, I have a busy schedule so I'm trying to make my existing waking hours move "productive"......for example, on the train, I will do a kinda wall-sit against the train seat and I measure myself to see how many stations the train can pass before the pain in the legs/quads becomes too much......'cause its not till the pain starts that any benefits in leg muscle strength begins to develop......
Also I agree with skier-J, I do try to stand during my commute to work and I do alternating one-legged stands and these really work on my ability to balance and its especailly effective when I try to do it with my eyes closed.......just so that it doesn't look too strange I usually camoflage what my feet are doing by putting my gym back down in such a position at the base of my feet so people on the train can't see the fact that one foot is raised slightly off the ground...I also carry a Walkman with earphones on the train so to the casual observer it appears I am simply listening/enjoying music with my eyes closed.....
Ott, I like your suggestion of exercising by going up flights of stairs carrying a case of beer....... I would never have thought of that one......but I can't see myself doing that around the office building ......
The balance disk has been suggested by Harrison and SCSA and I know others have this as well....but I don't. ....so I'll put this on my list for Santa. I tried making/using a tipping board, like HH has in his Book, but it wasn't very successful for me.....so I didn't perserve with it.... a balance disk is something I could use around my home when I'm doing other stuff like relaxing and watching sport on TV...
The Hindu squats look like a better result for me as I could work on those anywhere during the day whilst in private/alone and also at home when relaxing....thanks for that tip and the description on how to do them.....
And lastly, piggyslayer's and JC comments about imbalance in leg/ankle/foot muscle strength & dynamic body posture whilst skiing are also worthwhile exploring.....I've been toying with similar ideas in relation to dynamic balance.....which is one of the reasons I practice on moving trains which can unexpectedly jolt the body....just like the unexpected jolt which can happen whilst skiing.....I have noticed my ability to balance on one leg impoved but I was also interested to notice that at the moments of imbalance, that there were specific musles which were primary culprits...and specifically the muscles controlling the lateral stabilty of the knee and the ankle......so my thoughts around this are that, although I am trying to build up muscle strength in these specific areas, I am also now coming to the conclusion that a strong conscious focus on those areas whilst trying to stay in dynamic balance may also be a major factor for me...... previously I was always aware of my feet/knees but not to the extent of actively, specifically consciously strongly focusing on them whilst trying to dynamically balance and so trying to strongly control the direction of any reaction ( read lateral movement) they may exhibit whilst trying to regain/move back into balance and the dynamic interplay of upper body movements which seem to compensate for nay imbalance.....I've probably lost you at this point so I'll leave it there.....
I've been given more than enough to go on with by you guys so thanks again for the input....
Bluey