This article is from the Running FAQ, by Ozzie Gontang with numerous contributions by others.
(Kenrick J. Mock firstname.lastname@example.org)
Here is a little table adapted from "Beyond Diet...Exercise Your Way to
Fitness and Heart Health" by Lenore R. Zohman, M.D.
Energy Range = Approx. Calories Per Hour
Energy Range Activity Conditioning Benefits 72-84 Sitting, Conversing None 120-150 Strolling, 1 mph Not strenuous enough to produce endurance unless Walking, 2 mph your exercise capacity is very low 150-240 Golf, power cart. Not sufficiently taxing or continuous to promote endurance. 240-300 Cleaning windows Adequate for conditioning if carried out Mopping floor continuously for vacuuming 20-30 minutes Bowling Too intermittent for endurance Walking, 3mph Adequate dynamic exercise if Cycling, 6mph your capacity is low Golf, pulling cart Useful if you walk briskly,if cart is heavy isometrics may be involved. 300-360 Scrubbing floors Adequate if done in at least 2 minute stints Walking, 3.5 mph Usually good dynamic aerobic exercise Cycling, 8 mph Ping Pong Vigorous continuous play can Badminton have endurance benefits. May aid skill. Volleyball Tennis, doubles Not beneficial unless there is continuous play for at least 2 minutes at a time. Aids skill. 360-420 Walking, 4mph Dynamic, aerobic, beneficial. Cycling, 10mph Skating Should be continuous 420-480 Walking, 5mph Dynamic, aerobic, beneficial. Cycling, 11mph Tennis, singles Benefit if played 30 minutes or more with an attempt to keep moving Water Skiing Total isometrics 480-600 Jogging, 5 mph Dynamic, aerobic, endurance Cycling, 12mph building exercise. Downhill skiing Usually too short to help endurance significantly. Paddleball Not sufficiently continuous for aerobic benefits. 600-660 Running, 5.5 mph Excellent conditioner. Cycling, 13 mph Over 660 Running, 6+ mph Excellent conditioner Handball, Squash Conditioning benefit if played 30 min or more. Swimming (wide Good conditioning exercise caloric range)