The intransigence was both a function of his strength and a contributor to it.

ECONOMIST: Bagehot

The ability to move beyond your core capabilities is a function of the strength of your following and the ability to logically and emotionally connect the new ventures with your life coaching practice.

FORBES: How Life Coaches Become Very Wealthy (Part 3 of 3-part Series)

In the U.S. a lack of job growth and poor home sales data confirm that the recent strength in the home market was a function of the U.S. stimulus.

FORBES: Shorting The S&P 500

As evidence, they cite a 12-week scheme using weights that helped women 64 and above to double their leg strength and a walking program that reversed decades of declining lung function in a group in their seventies.

CNN: Bring the Barbells, Granny

Inside the lodges, trekkers rest up ahead of their final climb, conserving their strength and yet still burning energy just trying to breathe and function at such an altitude -- at 4, 800m, oxygen levels are only about 55% of those at sea level.

BBC: Nepal��s other Everest

In this case, the worm Caenorhabditis elegans (C. elegans) was found by scientists at Rutgers University in New Jersey, US, to losing its muscle mass and strength as it aged, without any accompanying loss in nervous system function.

BBC: Waistline secrets revealed by worms