the following illustrative embodiments are provided to illustrate the disclosure of the present invention , these and other advantages and effects can be apparently understood by those in the art after reading the disclosure of this specification . the present invention can also be performed or applied by other different embodiments . the details of the specification may be on the basis of different points and applications , and numerous modifications and variations can be devised without departing from the spirit of the present invention . fig1 a is a schematic diagram showing a musculature training device 1 according to an embodiment of the present invention . the musculature training device 1 comprises an attaching member 10 , at least a fixing - and - adjusting member 11 , and at least an elastic member 12 . the attaching member 10 is fixed around a joint of a user &# 39 ; s body or limbs , and can be adjusted according to the dimension of the limbs , to satisfy the musculature training demands for different body parts . with regard to the musculature training for knee joints , for example , the attaching member 10 is fixed at a first position , which is ⅓ of the length of the thigh away from the knee and a second position , which is ⅓ of the length of the shank away from the knee , as shown in fig1 b . with regard to the musculature training for elbow joints , the attaching member 10 is fixed at a first position , which is ⅓ of the length of the upper arm away from the elbow and a second position , which is ⅓ of the length of the forearm away from the elbow , as shown in fig1 c . with regard to the musculature training for finger joints , the attaching member 10 is fixed to a finger tip and a proximal phalanx , as shown in fig1 d . in an embodiment , the attaching member 10 is a ring - shaped girdle that has a through hole 101 for a user a &# 39 ; s body or limbs to pass therethrough , and an engaging portion 102 for adjusting the size of the through hole 101 , as shown in fig1 e . in another embodiment , the attaching member 10 is a cloth strip 103 that has a first surface 10 a , a second surface 10 b opposing to the first surface 10 a , a first engaging portion 104 disposed on the first surface 10 a , and a second engaging portion 104 ′ disposed on the second surface 10 b , for the user to fix the attaching member 10 to his body or limbs by engaging the first engaging portion 104 with the second engaging portion 104 ′, as shown in fig1 f . in yet another embodiment , the attaching member 10 is another cloth strip 103 ′ that has a first surface 10 a , a second surface 10 b opposing to the first surface 10 a , and an engaging portion 102 and a buckle 105 that are disposed on the first surface 10 a , for the user to fix the attaching member 10 to his body or limbs with the second surface 10 b adhered to his body or limbs and the engaging portion 102 surrounding the body or limbs and engaged with the buckle 105 , as shown in fig1 g . in yet another embodiment , the attaching member 10 has a first surface 10 a coupled with the fixing - and - adjusting member 11 , a second surface 10 b opposing to the first surface 10 a , and an engaging portion 102 disposed on the second surface 10 b , for the user to fix the attaching member to a cloth a ′ wore on his body or limbs , as shown in fig1 h . the at least a fixing - and - adjusting member 11 is installed on the attaching member 10 that is disposed on two sides of the joint . in an embodiment , the fixing - and - adjusting member 11 is a clamp buckle , a slide buckle or a cam buckle . the at least an elastic member 12 is coupled with the fixing - and - adjusting member 11 . an initial length of the elastic member 12 is set by the fixing - and - adjusting member 11 . when the user moves his body or limbs to deform the elastic member 12 and change the initial length of the elastic member 12 , the elastic member 12 generates a restoring force that provides resistance needed for musculature training around the joint . the shorter the initial length is , the greater the restoring force generated by the elastic member 12 becomes . therefore , the user may select suitable training strength on his demands . in an embodiment , the elastic member 12 is a tubing , a thera - band , a spring or a metal sheet . in an embodiment , at least two fixing - and - adjusting members 11 are installed on the attaching member 10 that is disposed on two sides of the joint , and two ends of the elastic member 12 are coupled with fixing - and - adjusting members 11 , respectively , that are installed on two side of the joint . in another embodiment , the fixing - and - adjusting member 11 that is coupled with one end of the elastic member 12 is disposed on the attaching member 10 , which is disposed on one side of the joint , and the other end of the elastic member 12 is coupled with the attaching member 10 that is disposed on the other side of the joint . in yet another embodiment , the elastic member 12 is deformed when being pulled , compressed , bended or twisted . in yet another embodiment , the user is allowed to dispose the fixing - and - adjusting member 11 or the elastic member 12 on certain positions corresponding to the musculature to be trained . the elastic member 12 is deformed as the musculature to be trained contracts . with regard to the training of quadriceps femoris at the front side of thigh , the fixing - and - adjusting member 11 is fixed at the thigh and the front side of the shank , as shown in fig1 i . with regard to the training of biceps femoris at the rear side of thigh , the fixing - and - adjusting member 11 is fixed at the thigh and the rear side of the shank , as shown in fig1 j . in another embodiment , the fixing - and - adjusting member 11 is used to adjust the initial length of the elastic member 12 , such that the elastic member 12 provides the resistance needed for musculature training of various strength . in yet another embodiment , the elastic member 12 can be in parallel to or interlaced with a motion direction of the joint by changing the positions where the two ends of the elastic member 12 are coupled with the fixing - and - adjusting member 11 , to form force arms with different length and change the magnitude of the resistance . in yet another embodiment , a user may select an elastic member 12 with a different resistance coefficient or change a number of the elastic members 12 on his demands . it is recommended that an elastic member 12 with a low resistance coefficient is selected for muscle strength training , and another elastic member 12 with a high resistance coefficient is selected for muscular endurance training in another embodiment , the fixing - and - adjusting member 11 has a first engaging portion 111 , and the elastic member 12 has a second engaging portion 121 extending along a length thereof . the initial length of the elastic member 12 can thus be adjusted by adjusting a position where the second engaging portion 121 is engaged with the first engaging portion 111 , as shown in fig1 k . in yet another embodiment , the fixing - and - adjusting member 11 is a button 112 or a button hole 113 , and the elastic member 12 has a plurality of button holes 123 or buttons 122 disposed along a length thereof . accordingly , a user can adjust the initial length of the elastic member 12 by engaging the fixing - and - adjusting member 11 with one of the button holes 123 or the buttons 122 , as shown in fig1 l and 1 l ′, respectively . fig2 is a schematic diagram showing a musculature training device 2 according to another embodiment of the present invention . the musculature training device 2 comprises at least a training cloth 20 , a plurality of fixing - and - adjusting members 21 , and at least an elastic member 22 . the musculature training device 2 differs from the musculature training device 1 in that the fixing - and - adjusting members 21 of the musculature training device 2 are coupled with the training cloth 20 , and are disposed on two sides of the joint of a user &# 39 ; s body or limbs . with regard to the musculature training for knee joints , for example , the fixing - and - adjusting member 21 is disposed at a first position , which is ⅓ of the length of the thigh away from the knee and a second position , which is ⅓ of the length of the shank away from the knee . with regard to the musculature training for elbow joints , the fixing - and - adjusting member 21 is fixed at a first position , which is ⅓ of the length of the upper arm away from the elbow and a second position , which is ⅓ of the length of the forearm away from the elbow . in conclusion , since a musculature training device of the present invention includes an attaching member or a training cloth , a user may take rehabilitation treatment or strength training without worrying about getting injured . by contrast , the conventional weight training equipment such as 1 rm ( repetition maximum ) likely introduces sport injure . moreover , a musculature training device of the present invention has a fixing - and - adjusting member in cooperation with an elastic member , so as to change training resistance of musculature around a single joint , perform a certain joint sport , and act as an auxiliary device that is composed of active and passive body elements , such as muscles , joints and ligaments . therefore , the musculature training device provides resistance against muscles , and provides athletes or patients with improved musculature training effectiveness . when a user is walking , the musculature training device provides light resistance training the foregoing descriptions of the detailed embodiments are only illustrated to disclose the features and functions of the present invention and not restrictive of the scope of the present invention . it should be understood to those in the art that all modifications and variations according to the spirit and principle in the disclosure of the present invention should fall within the scope of the appended claims .
a musculature training device is disclosed . the musculature training device includes an attaching member , a fixing - and - adjusting member coupled to the attaching member , and an elastic member connected to the fixing - and - adjusting member , wherein the fixing - and - adjusting member sets an initial length of the elastic member . when a user move his / her body or limbs to deform the elastic member and change the initial length of the elastic member , the elastic member generates a restoring force that provides a resistance needed for a musculature training around the user &# 39 ; s joint . therefore , the user can train himself anytime and anywhere . moreover , the user is allowed to perform a single joint musculature training to avoid sport injury and improve training effectiveness .