and transmission a simple approach is to provide a tall enough output container and or a slow enough pump rate so that the container is unlikely to overflow during the maximum exercise session however it is desirable that the output container fill to about 3 4 during the average session since this is reasonably encouraging for the average user the maximum session will then fill the container more than once to keep track of these cycles a counter is useful it can be operated by a float and reset manually fig1 shows the relationship of components in a generalized basic embodiment item 1 shows a gear on the pump shaft this represents the last element of power transmission in general it can be a spur gear pinion friction wheel sprocket wheel or pulley the pump can be located near the power source to simplify transmission design by routing the liquid path 9 as required any remaining distance is spanned by means such as a drive shaft chain belt rack gears torsion cable lever and the like depending on the transmission type the pump shaft or drive shaft can have universal joint s a piston force pump provides accurate metering and firm resistance and is a suggested type of pump pump cycling should be essentially undetectable a dual cylinder pump is preferred if used only for metering any type of variable delivery pump which maintains a constant proportion of pump operating rate to liquid transfer rate over the expected range of operating speeds can be used fig2 details the output container 10 as enhanced with an automatic return valve and cycle counter float 24 can be guided.