Hearst Magazines Digital Media [1] is partnering with video and on-demand television network ExerciseTV [2] to produce the Seventeen Trainer, a series of Seventeen [3] magazine-branded exercise videos for teenage girls.

Chris Johnson, Hearst Magazines Digital Media vice president of content and business development, said that the company’s magazines consistently focus on health and fitness as major components of their content, and that workout and trainer videos are consistently the top performing videos across Hearst magazine-branded sites.

Consequently, the company is producing a 50-part video series that it hopes will help inspire readers to make fitness a regular part of their daily lives (and generate revenue for Hearst). A Hearst spokesperson declined to comment on the partnership’s revenue model.

Expected to launch in October, the series of 50 two- to three-minute videos will be available for download and on demand on the ExerciseTV Web site and at seventeen.com.