Why do odds on Basketball, Volleyball and Handball drop more frequently than Football?

I have noticed this a lot over recent months and as a consequence of this lost quite a bit of money. I tend to find dropping odds on football a lot more reliable but I can't seem to figure out why in sports like Basketball, Volleyball or Handball drop so frequently. Every day you may see odds drop for a Basketball game go from 4.00 to 2.50 or 3.00 to 1.89 or something crazy like that. Is it simply because lineup changes have a dramatic effect on the odds? Is it because there is less players on a team such as Basketball, Volleyball and Handball that when a lineup is changed it dramatically effects the odds?