The ornamental design for a jumptrainingtoy, as shown and described.
FIG. 1 is a front perspective view of the jump training toy showing my new design;
FIG. 2 is a left side view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front view thereof;
FIG. 7 is a back view thereof;
FIG. 8 is a front perspective view showing the design with its components in a separated state; and,
FIG. 9 is a front perspective view showing the design with its components in a storage configuration.
The broken lines shown in FIGS. 1-4, 8 and 9 are included for the purpose of illustrating features of the jump training toy that form no part of the claimed design.