A good article in this month's "Sports Health" mag- "An evidence-based approach to hamstring strain injury: A systematic review of the literature".
1. Hip flexor flexibility appears to be more important than hs flexibility.
2. hamstring strength,quad/hs imbalances assessed isokinetically is conflicting.
3. Yet another article that points to the efficacy of the Sherry/Best functional protocol outlined in JOSPT '04.