A human powered vehicle (HPV) is, broadly, any vehicle powered solely by humanmuscular effort. The most common HPV is the bicycle. Recumbent bicycles are a common variant, and have broken human powered speed records (but they cannot be used in UCI[?]cycling events). Human powered aeroplanes have been built and flown, there are examples in the IHPVA's Air section (see external web link below). Human powered boats and even submarines also exist.
... 65 years of age or older. The median age is 34 years. For every 100 females there are 96.1 males. For every 100 females age 18 and over, there are 93.9 males.
The median ...