A swing speed training club includes a shaft having a proximal end and a distal end; and a head portion affixed to the distal end of the shaft and having a body having a proximal end and a distal end. The head portion is configured to produce a distinctive sound when the head portion is swung through the air at the distal end of the club shaft at a suitable speed.

A golf training device having a proximal stop a distal stop and a free moving weight. When a proper swing is used by the device the weight will remain against the first stop through the majority of the swing's arch, and not contact the second distal stop until the bottom of the arch, where the club would strike the ball. A golf club having such a training device integral with the club or removably associated with the club.

Described herein are systems and methods for favorably coordinating a timing relationship between a musculoskeletal activity cycle and a cardiac cycle of a user. A method may include repetitively detecting a signal that correlates to a blood volume in the user; determining an actual value of the signal that varies with the timing relationship; computing a trend of the actual value of the signal; and adjusting the movement guidance based on the trend of the actual value. A system may include a prompt device configured to provide recurrently a movement guidance to the user for guiding performance of the rhythmic musculoskeletal activity; a sensor configured to provide a signal that correlates to a blood volume in the user; and a processor configured to determine an actual value of the signal that varies with the timing relationship and to adjust the movement guidance based on the trend of the actual value.

A portable modular solution for a workout mace, including a multi section handle, and a mace head capable of having variable weights, where the solution allows adding many different handles, ad-ons and accessories such as different handles for an all-round workout with a single device. The carrying bag/backpack of the modular system may be made in the form of a vest and be doubled as a weight vest.

A portable modular solution for a workout mace, including a multi section handle, and a mace head capable of having variable weights, where the solution allows adding many different handles, ad-ons and accessories such as different handles for an all-round workout with a single device. The carrying bag/backpack of the modular system may be made in the form of a vest and be doubled as a weight vest.

The present invention relates to a pitching training aid for shadow pitching training, the pitching training aid comprising: a receiving body which includes an inner receiving space and has openings at both sides thereof, and replicates a baseball in a state where a user encompasses and holds the receiving body with his/her hand or wears the receiving body on his/her fingers through the receiving space; a locking holder which is detachably inserted and fixed in the receiving space through the opening of the receiving body, and provides a locking region where locking through-holes are formed in the longitudinal direction, so as to allow at least one finger to be fitted and locked into the locking holder in the longitudinal direction, the locking holes extending in a curved shape having a predetermined curvature; and an elongated body which has a rod shape extending a predetermined length from one side of the receiving body, and provides load and vibration while being elastically deformed and restored by rotation of a user's arm.

An exercise device that simultaneously incorporates both balance and resistance training comprises a base including a rear and a front portion; a balancer disposed in the base proximal to the front portion of the base and configured to both support a user thereon and move with weight shifting by the user thereon; one or more lines retractably disposed in the front portion of the base; a resistance mechanism disposed in the base and operably associated with the one or more lines, wherein both balance and resistance training are provided by the balancer and the resistance mechanism when a user attempts to balance the user's weight on the balancer while pulling on the one or more lines.

An exercise device that simultaneously incorporates both balance and resistance training comprises a base including a rear and a front portion; a balancer disposed in the base proximal to the front portion of the base and configured to both support a user thereon and move with weight shifting by the user thereon; one or more lines retractably disposed in the front portion of the base; a resistance mechanism disposed in the base and operably associated with the one or more lines, wherein both balance and resistance training are provided by the balancer and the resistance mechanism when a user attempts to balance the user's weight on the balancer while pulling on the one or more lines.

An aqua-resistance exercise device includes an elongate member, a strap, fasteners, and one or more fins. The elongate member includes an engagement portion, a shaft extending from the engagement portion, and a handle to be gripped by a user. The fasteners are provided to the engagement portion of the elongate member and an inner side of the strap to releasably attach the strap to the engagement portion of the elongate member. The one or more fins are adapted to be received on the strap, and the fasteners releasably secure the strap to the engagement portion of the elongate member to thereby releasably secure the fins to the elongate member.

Provided is a golf training apparatus that helps a golfer learn a swing with trunk rotation and limited excessive arm movement, which includes an attachment member configured to be detachably attached to a pants belt loop on the front and right side of a user's waist, a case to which the attachment member is fixed, and first and second pads attached to the case via first and second string-like members, respectively. A force in a direction of winding up the first string-like member inside the case is constantly applied on the first string-like member, and the same applies to the second string-like member. The user executes a practice swing with the first and second pad sandwiched under the armpits. If the user opens an armpit, the first or second pad is pulled by the first or second string-like member and then returns to a region near the case.