A translatable carriage exercise machine comprising first and second spaced elongate side rails. A moveable carriage translatable along the side rails. An upper support surface on the carriage sized to support the entire posterior trunk of an adult human in supine. A plurality of elastic tension members secured to a bottom of the moveable carriage and fixable to a plurality of spring anchors. An upright footbar positioned at a machine first end. A pair of carriage pulleys fixed at a second end of the exercise apparatus with carriage ropes adjustably fixed to the moveable carriage each looped around respective carriage pulleys. A rotational resistance mechanism comprising an elongate resistance band having an extended configuration and a retracted configuration. The rotational resistance mechanism comprising a resistor comprising a load member. A user option to utilize one or more of the elastic tension members and rotational resistance mechanism during exercise.

A translatable carriage exercise machine comprising first and second spaced elongate side rails. A moveable carriage translatable along the side rails. An upper support surface on the carriage sized to support the entire posterior trunk of an adult human in supine. A plurality of elastic tension members secured to a bottom of the moveable carriage and fixable to a plurality of spring anchors. An upright footbar positioned at a machine first end. A pair of carriage pulleys fixed at a second end of the exercise apparatus with carriage ropes adjustably fixed to the moveable carriage each looped around respective carriage pulleys. A rotational resistance mechanism comprising an elongate resistance band having an extended configuration and a retracted configuration. The rotational resistance mechanism comprising a resistor comprising a load member. A user option to utilize one or more of the elastic tension members and rotational resistance mechanism during exercise.

The invention relates to a water board (2) made of a material that can float on water, having a support area (8), on which a user rests at least partially. To reduce the current forces acting on the user while holding on to and being towed behind a motorized watercraft (24), it is proposed that the water board (2) has, at a front-end area, an attachment segment (22) for the articulation of the water board (2) to the watercraft (24).

An exercise machine includes a cyclical actuator and a mechanical energy storage device. Connective structure operatively connects the cyclical actuator to the mechanical energy storage device. Motion of the cyclical actuator urges physical motion of and energy storage in the mechanical energy storage device. The exercise machine further includes an electric machine. A communication pathway enables exchange of data between multiple associated exercise machines such that multiple associated operators on multiple associated exercise machines have a common experience.

Disclosed are computer-implemented techniques for providing immediate feedback to rowers for training and other activities to improve competitiveness of rowing crews. The techniques include a computing device receiving from a set of stroke unit devices, data that represent changes in acceleration of users' seats corresponding to users' strokes, receiving reference stroke data corresponding to a reference user's stroke, and generating from the received data from the set of stroke unit devices and the received reference strokes data, feedback data that correspond to relative stroke timing differences of each of the users, relative to the reference stroke, and transmitting the generated feedback data to user devices according to a feedback mechanism. Various feedback mechanisms are disclosed including visual, audio and tactical feedback mechanisms.

Disclosed are computer-implemented techniques for providing immediate feedback to rowers for training and other activities to improve competitiveness of rowing crews. The techniques include a computing device receiving from a set of stroke unit devices, data that represent changes in acceleration of users' seats corresponding to users' strokes, receiving reference stroke data corresponding to a reference user's stroke, and generating from the received data from the set of stroke unit devices and the received reference strokes data, feedback data that correspond to relative stroke timing differences of each of the users, relative to the reference stroke, and transmitting the generated feedback data to user devices according to a feedback mechanism. Various feedback mechanisms are disclosed including visual, audio and tactical feedback mechanisms.

A rowing machine includes a base mount with pulleys, a resistance device, a handle, a transmission member, and a resilient member. The resistance device includes a housing, a shaft having an outer shaft section located outside the housing, and an inner shaft section located inside the housing, a plurality of blades mounted to the inner shaft section, and a transmission wheel mounted to the outer shaft section. The transmission member extends from the handle and has an engagement section engaged with the transmission wheel. The resilient member has a first end disposed to the based mount, and a second end connected with the transmission member in a way that the transmission member and the resilient member wrap around the pulleys. As such, the rowing machine can provide uniform resistance and accurately determine the travel distance of the handle that is pulled by a user.

A rowing machine includes a base mount with pulleys, a resistance device, a handle, a transmission member, and a resilient member. The resistance device includes a housing, a shaft having an outer shaft section located outside the housing, and an inner shaft section located inside the housing, a plurality of blades mounted to the inner shaft section, and a transmission wheel mounted to the outer shaft section. The transmission member extends from the handle and has an engagement section engaged with the transmission wheel. The resilient member has a first end disposed to the based mount, and a second end connected with the transmission member in a way that the transmission member and the resilient member wrap around the pulleys. As such, the rowing machine can provide uniform resistance and accurately determine the travel distance of the handle that is pulled by a user.

An apparatus for securely and removably attaching an apparatus for adjusting the hydrodynamics of a watercraft is provided. The apparatus is attached to the watercraft by an elastic cord. One or more flow resistance members are removably attached to the cord. The cord is looped in a configuration that allows for infinite length/size adjustment. A closure for forming the loop can be released, allowing the user to add or subtract resistance members to achieve a desired resistance.

An apparatus for securely and removably attaching an apparatus for adjusting the hydrodynamics of a watercraft is provided. The apparatus is attached to the watercraft by an elastic cord. One or more flow resistance members are removably attached to the cord. The cord is looped in a configuration that allows for infinite length/size adjustment. A closure for forming the loop can be released, allowing the user to add or subtract resistance members to achieve a desired resistance.