Abstract: A personalized training system to perform operations that include: receiving a score that corresponds with a content identifier from a user account, the score comprising at least a value that comprises an attribute; accessing a user profile associated with the user account, the user profile indicating a cohort associated with the user account; identifying a set of scores within a leaderboard associated with the content identifier based on the cohort associated with the user account; determining a first ranking of the score associated with the user account among a portion of the set of scores based on at least the attribute of the score; and determining a second ranking of the user account among a subset of the portion of the set of scores based on the value of the score.

Abstract: Disclosed is a jump rope assembly comprising one or more handles having a jump rope secured to a head that is rotatably disposed on a body of the handle. Additionally, head may include a fastener attached to an end of the rope and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.

Abstract: Disclosed is a jump rope comprising: an oil impregnated bushing; having a pair of handles with an external surface treatment. Additionally, the rope may include a fastener attached to each end and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.

Abstract: Disclosed is a jump rope comprising: an oil impregnated bushing; having a pair of handles with an external surface treatment. Additionally, the rope may include a fastener attached to each end and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.