rtp main 508
Sale Price:$400.00
Original Price:$500.00
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2. rtp vocal 77 8 The “Intensity-Type-Timing” Principle In the first RTT phase, it would be appropriate to refer to the principle of “intensity-type-timing ” In accordance with this principle, the terms “intensity,” “type,” and “timing” must be interpreted as follows: 1 The term “intensity” refers to the intensity of the exercise
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