Children with various forms of organic acidaemia have carnitine requirements that exceed their dietary intake and biosynthetic capability, in order to permit excretion of accumulating organic acids.
In this analysis, use of dietary diary data has enabled the relationship between energy intake and physical capability to be explored, with positive results.
The initial model included macronutrient or energy intake, the physical capability measure, height and weight; energy intake was then added for the macronutrients, as well as childhood social class, adult social class and education.
There is limited research on the relationship between dietary intakes and physical capability, despite the fact that nutritional factors are potentially important and modifiable.
The current literature is conflicting on whether protein intake is associated with capability and on whether older people need more than current recommended amounts to maintain muscle mass and function.
Pressure capabilities range from low vacuums at intake to special compressors capable of 60,000 psig or higher.
Protein intake may also influence physical capability measures, but more detailed analysis of types and manner of consumption are required.
Childhood social class, adult social class and education were also adjusted for as they are associated with both physical capability and dietary intake [ 19].
There is little observational research on energy intake in relation to physical capability, possibly because food frequency questionnaires are the dietary assessment method most often used, and these are more designed to rank individuals rather than to measure total intake [ 26, 27].
In summary, in NSHD, analysis of diet in relation to measures of physical capability indicates that higher energy intake across adulthood is modestly associated with stronger grip strength later in life.
