Abstract: A composition for strengthening, developing, differentiating, or regenerating muscle, or preventing, ameliorating, or treating muscle loss or muscle fatigue includes a Schizonepeta tenuifolia extract as an effective component. The Schizonepeta tenuifolia extract as an effective component has the effects of restoring the viability of muscle cells, increasing the endurance time on the rotarod performance test, i.e., the holding time without falling off from the rod, compared to the control group, reducing the content of LDH, AST, and ALT in blood, increasing the grip strength, enhancing the expression amount of energy metabolism-related genes in muscle tissues, increasing the density of muscle fibers in muscle tissues, inducing a change in the fibroblast arrangement to have a well-organized structure, and reducing the expression of MuRF1 in muscle tissues, as compared to the control group.

Abstract: Disclosed herein is a steering column, including: an inner tube; an outer tube formed in a hollow shape into which the inner tube is inserted and including a pair of telescope guides protruding to an outer circumferential surface thereof, a first slit cut in an axial direction between the pair of telescope guides, and a second slit cut toward both sides of a circumferential direction at one end of the first slit; and a control lever installed on the telescope guides, wherein the telescope guides have a taper that is formed obliquely along a lengthwise direction, and the operating force of the lever is uniformly maintained according to the position of the control lever in the lengthwise direction by means of the taper.

Abstract: Disclosed herein is a steering column, including: an inner tube; an outer tube formed in a hollow shape into which the inner tube is inserted and including a pair of telescope guides protruding to an outer circumferential surface thereof, a first slit cut in an axial direction between the pair of telescope guides, and a second slit cut toward both sides of a circumferential direction at one end of the first slit; and a control lever installed on the telescope guides, wherein the telescope guides have a taper that is formed obliquely along a lengthwise direction, and the operating force of the lever is uniformly maintained according to the position of the control lever in the lengthwise direction by means of the taper.