My topic is handedness—whether in different sports it is better to be left or right-sided or whether a more balanced approach is

My topic is handedness—whether in different sports it is better to be left or right-sided or whether a more balanced approach is more successful. I’m left-handed myself and I actually didn’t see any(26)relevance to my own life when I happened to start reading an article by a sports psychologist called Peter Matthews. He spent the first part of the article talking about handedness in(27)music instead of sport, which I have to say almost put me off from reading further. But what I soon became struck by was the(28)sheer volume of both observation and investigation he had done in many different sports and I felt persuaded that what he had to say would be of real interest. I think Matthews’ findings will be (29)beneficial, not so much in helping sportspeople to work on their weaker side, but more that they can help them (30)identify the most suitable strategies to use in a given game. Although most trainers know how important handedness is, at present they are rather reluctant to(31)make use of the insights scientists like Matthews can give, which I think is rather(32)short-sighted because focusing on individual flexibility is only part of the story.
    Anyway, back to the article.
    Matthews found a German study which looked at what he called "mixed-handedness", that is, the capacity to use both left and right hands(33)equally. It looked at mixed-handedness in 40 musicians on a variety of instruments. Researchers examined a number of(34)variables, e.g. type of instrument played, regularity of practice undertaken and length of time playing instrument... and found the following: keyboard players had high levels of mixed-handedness, whereas string players like cellists and violinists strongly(35)favoured one hand. Also those who started younger were more mixed-handed.