Held Needed: Strength Training for Old(er) Man

[gamboolman]

I need some help and advice.
Age 47
5' 7"
160 lbs
I work international oilfield in tropics, hot and humid.

I walk about 6 miles a day at least 6 days per week when home in States. When Offshore at work I walk for 1 hour outside and I walk the platform and climb a lot of stair steps for about 1 hour - this is a lot of steps.
I also do 50 pushups, 5 pullups, & 5 chinups I do this three times during the day.
I do these 6 or 7 days per week.
I am not interested in bulking up, I just want to increase in strength and stamina.
I had hernia surgery a couple of years ago so I do not need to be lifting weights.
I also have herniated discs in neck due to sins of oilfield youth - so I need to be careful that way too.
Any help and advice would be greatly appreciated.
Thanks, gamboolman....

[swanso5]

strength is built with heavy wt or very hard versions of your exercises...which ever way you go, your sets should not exceed 15secs or so or you'll switch over to a different "time inder tension" bracket (muscle gain)...i would suggest going to www.ringtraining.com and looking at their articles for some ideas of bodyweighht type training although a lot of their stuff is performed with gymnastics rings...www.bodyweightculture.com is also another goody