It's a very old intuitive activity, as old as the steam engine.
Considering the rising life expectancy and the remarkable health conditions even in very old adults, leisure activities might become important indicators of everyday competence among older adults.
The strong sequence diversity demonstrated here suggests that instead phosphite oxidation is likely an old activity, and the very similar catalytic parameters, combined with the inability to increase kcat substantially by directed evolution, suggest that the rates of oxidation of phosphite by PTDHs may be limited by a relatively high intrinsic barrier.
A proper thermodynamic definition of single-ion activities is a very old and vexing unsolved problem in physical chemistry, as is the thermodynamic measurement of these same quantities.
Haak et al. [ 2] found that independence in daily activities among the very old (80+) is strongly linked to aging in place, and that independence is highly valued and reinforces the older person's sense of self.
For example, simple masseteric reflex activity is maintained until very old age (Kossioni and Karkazis 1998).
Background: Little is known about physical activity (PA) in the very old, the fastest growing age group in the population.
Notably, we found very high telomerase expression and activity in ovary, even though very old female (30 months old) are not fertile.
The rate of such activity remained high even in very old age and in participants with cognitive deficit.
The World Health Organization (WHO) divides elderly people according to their health conditions and living dependency into three categories: the Recent Old, who remain active and undertake normal activities without support, the Old, who can only afford reduced amount of activities and work, and the Very Old, who have difficulty to take care of themselves [14].
