They occur most frequently in runners who: 1) increase their mileage too quickly; 2) run on hard surfaces; or 3) do high-intensity speedwork sessions.
If you do these types of workouts with tight muscles, your risk of shinsplints will be higher still.
Here's what to do. Make sure you stretch before running, after a brief warmup. Be especially thorough before your speedwork sessions. Afterward, ice your shins for 15 to 20 minutes and consider taking anti-inflammatories.
Tight calf muscles are a leading cause of shinsplints, so you'll want to pay particular attention to them.
The best time for speedwork is midweek, between easy-run days. If speedwork has caused shinsplints for you in the past, try the following: