I am trying to bring out a Scriptural PRINCIPLE here, instead of saying whether or not adventure sports is right.
Paul wrote about Ephaphroditus - "Because for the work of Christ he was nigh unto death, NOT REGARDING HIS LIFE, to supply your lack of service toward me" (Phil 2:30).
Here, Ephaphroditus RISKED his life for the cause of Christ. Similarly, Priscilla and Aquila "LAID DOWN THEIR OWN NECKS" for Paul (Rom 16:3-4). Paul did the same thing (Acts 20:24).
Further, Paul said, "For to me TO LIVE is Christ, and to die is gain" (Phil 1:21).
What I am trying to say here is, Paul jeopardized his life for the sake of the Lord. But his LIFE was for Christ. Why then should we jeopardize our lives for some thing else, especially when we cannot jeopardize it for the Lord?
Since the Bible tells us, "For ye are bought with a price: therefore glorify God in your BODY, and in your spirit, WHICH ARE GOD'S" (1 Cor 6:20), and "YE ARE NOT YOUR OWN" (verse 19), why should we put the body to risk to suffer injury, thus disabling us to LIVE FOR CHRIST? Think about it!!!