Yes. There are a lot of variables to consider: For example, the AbsValue( slope ) of the 20-period EMA of a one-minute can be below the threshold to be qualified as a strong trend. Yet, the ADX of the five-minute chart can be above 55. ( Unless the setting is really weird, an ADX above 55 should be considered as a strong trend. ) This happened to CLG3 few days ago. Just consider the slope of an EMA in a single timeframe may not be enough to decide whether price is trending strongly.
=============== Good question; its more helpful to test the numbers on many time frame///large time frames.EMA//ma of most any kind is helpful , not the slope.But feel free to find that out yourself=good trends go more than i forcast. None of this is a prediction; but its a high probability trends go further than i think ..... I study trends a lot.LOL