Medical researcher: Scientists compared a large group of joggers who habitually stretch before jogging to an equal nu...

Does D trigger in both directions? Meaning: If you are more likely to get injured, then you are more likely to stretch; and, if you are more likely to stretch, then you are more likely get injured. In other words, the language - "the more likely X, the more likely X" - can be treated as "if and only if": X <----> Y please help thank you