System, method and apparatus for exercise device

Abstract

An exercise device can include a handle having a handle axis and a handle weight. A head can be removably coupled to a distal end of the handle with a single fastener adjacent a proximal end of the head. The head can have a head weight and can be axe-shaped. A distal end of the head can be blunt. A portion of each of the proximal and distal ends can be planar.

1 - 20 . (canceled) 
     
     
         21 . An exercise device, comprising:
 a handle having a handle axis and a handle weight;   a head coupled to a distal end of the handle, the head comprises a proximal end, a distal end and a head weight, the distal end of the head is blunt, a portion of each of the proximal and distal ends of the head is planar, and the head weight is distributed asymmetrically with respect to a geometric center of the head in at least one of x, y and z-axes of the head; and   a total weight of the exercise device is at least about 2 pounds.   
     
     
         22 . The exercise device of  claim 21 , wherein the handle weight is not greater than about 30% of the head weight, and further comprising a strap extending from the handle. 
     
     
         23 . The exercise device of  claim 21 , wherein the handle comprises no non-fastener metallic components. 
     
     
         24 . The exercise device of  claim 21 , wherein substantial entireties of the proximal and distal ends of the head are substantially parallel to each other. 
     
     
         25 . The exercise device of  claim 21 , wherein the head comprises side walls on opposing lateral sides thereof, and the sidewalls are substantially parallel to each other. 
     
     
         26 . The exercise device of  claim 21 , wherein the head comprises a center of mass that is spaced apart from the handle axis by at least about 4 cm. 
     
     
         27 . The exercise device of  claim 21 , wherein at least about 25% of the head weight or total weight of the exercise device is located within about 2.5 cm of the handle axis, and not greater than about 60% of the head weight or total weight is located within about 2.5 cm of the handle axis. 
     
     
         28 . The exercise device of  claim 21 , wherein at least about 50% of the head weight is located within about 6 cm of the handle axis, and not greater than about 80% of the head weight is located within about 6 cm of the handle axis. 
     
     
         29 . The exercise device of  claim 21 , wherein at least about 20% of the head weight is located within about 2.5 cm of the distal end of the head, and not greater than about 50% of the head weight is located within about 2.5 cm of the distal end of the head. 
     
     
         30 . The exercise device of  claim 21 , further comprising concave recesses formed in lateral sides of the head, each concave recess is asymmetric in at least one dimension, the head comprises a head width, each concave recess extends into the head in a range of at least about 10% of the head width to not greater than about 40% of the head width. 
     
     
         31 . The exercise device of  claim 21 , wherein:
 the handle comprises a handle distal portion adjacent the head, a handle proximal portion opposite the handle distal portion, and a handle middle portion located between the handle proximal and distal portions, each of which is configured to be gripped by a user;   the handle proximal portion comprises a loop configured to be secured to a strap; and   one of the handle and the head comprises a spline, and the other of the handle and the head comprises a groove configured to couple with the spline.   
     
     
         32 . The exercise device of  claim 31 , wherein:
 when the handle distal portion is gripped in a hand of the user and the handle is vertical, a total magnitude of force applied to the hand by the exercise device is at least about 30% greater than the actual head weight, and not greater than about 60% of the actual head weight; and   when the handle distal portion is gripped in the hand of the user and the handle is horizontal, a total magnitude of force applied to the hand by the exercise device is at least about 400% greater than the actual head weight, and not greater than about 600% of the actual head weight.   
     
     
         33 . The exercise device of  claim 31 , wherein:
 when the handle middle portion is gripped in a hand of the user and the handle is vertical, a total magnitude of force applied to the hand by the exercise device is at least about 30% greater than the actual head weight, and not greater than about 60% of the actual head weight; and   when the handle middle portion is gripped in the hand of the user and the handle is horizontal, a total magnitude of force applied to the hand by the exercise device is at least about 200% greater than the actual head weight, and not greater than about 300% of the actual head weight.   
     
     
         34 . The exercise device of  claim 31 , wherein:
 when the handle proximal portion is gripped in a hand of the user and the handle is vertical, a total magnitude of force applied to the at least one hand by the exercise device is at least about 30% greater than the actual head weight, and not greater than about 60% of the actual head weight; and   when the handle proximal portion is gripped in the hand of the user and the handle is horizontal, a total magnitude of force applied to the hand by the exercise device is at least about 100% greater than the actual head weight, and not greater than about 200% of the actual head weight.   
     
     
         35 . An exercise device, comprising:
 a handle having a handle axis;   a head extends from the handle, the head comprises a head weight that is distributed asymmetrically with respect to a geometric center of the head in at least one of x, y and z-axes of the head;   substantial entireties of proximal and distal ends of the head are substantially blunt and parallel to each other;   side walls of the head are on opposing lateral sides of the head, and the sidewalls are substantially parallel to each other;   the head comprises a core that is more dense than a material used to form the head; and   a total weight of the exercise device is at least about 2 pounds.   
     
     
         36 . The exercise device of  claim 35 , wherein:
 the head comprises a center of mass that is spaced apart from the handle axis by at least about 4 cm; and   at least about 25% of the head weight is located within about 2.5 cm of the handle axis, and not greater than about 60% of the head weight is located within about 2.5 cm of the handle axis.   
     
     
         37 . An exercise device, comprising:
 a handle having a handle axis, a handle proximal portion, a handle middle portion and a handle distal portion;   a head extends from the handle, the head comprises a head weight, the head has proximal and distal ends that are blunt, and the head comprises a core that is more dense than a material that forms the head; wherein   when the handle distal portion is gripped in a hand of a user and the handle is vertical, a total magnitude of force applied to the hand by the exercise device is at least about 10% greater than the head weight, and not greater than about 100% of the head weight;   when the handle middle portion is gripped in the hand of the user and the handle is vertical, a total magnitude of force applied to the hand by the exercise device is at least about 25% greater than the head weight, and not greater than about 150% of the head weight; and   when the handle proximal portion is gripped in the hand of the user and the handle is vertical, a total magnitude of force applied to the hand by the exercise device is at least about 50% greater than the head weight, and not greater than about 200% of the head weight; and   a strap extending from the handle.   
     
     
         38 . The exercise device of  claim 37 , wherein the handle has a handle weight that is not greater than about 30% of the head weight. 
     
     
         39 . The exercise device of  claim 37 , wherein the head comprises side walls on opposing lateral sides thereof, and the sidewalls are substantially parallel to each other. 
     
     
         40 . The exercise device of  claim 37 , wherein at least about 25% of the head weight or total weight of the exercise device is located within about 2.5 cm of the handle axis, and not greater than about 60% of the head weight or total weight is located within about 2.5 cm of the handle axis.