The U.S. Department of Health and Human Services recommends that adults engage in at least 2.5 hours of moderate aerobic physical activity each week. Recommendations for children age 6 to 17 are even higher: at least 1 hour of moderate or vigorous activity each day.
Yet according to the CDC, only one-third of American adults regularly engage in some kind of physical activity, and the prevalence of childhood obesity has more than tripled in the past three decades—to nearly 20% among children age 6 to 19. The warm and sunny days of summer provide an excellent opportunity to try new outdoor activities, or spend more time engaged in old favorites. Wolfram|Alpha can perform useful computations for many popular summer water sports, including fishing, water skiing, and sailing. By adding time and/or body weight to these inputs, you can tailor the calculations to your own physical measurements and activity schedule:
- fishing for three hours »
- fat burned water skiing if I weigh 175 lbs »
- calories burned sailing for 45 minutes »
- rowing 50 m/min »
- going for a swim at 4 mph »
- rowing for 35 minutes at 4 meter/min 150 lbs male »
- swimming 9 min/mile for 30 minutes 25 years old »
In addition to basic information about calories and fat burned, the amount of oxygen consumed, and the metabolic equivalents required for the activity, Wolfram|Alpha also computes estimates of working heart rate and heart rate reserve.
Below the “Heart rate pod”, Wolfram|Alpha generates an “Equivalent activities” pod that displays the amount of time it would take to expend the same amount of energy performing other activities. Within the “Speed” and “Pace” pods that follow, you can click “Show comparisons” to see how your predicted performance measures up against various world records. Below the “Pace” pod, there are “Distance” and “Time” pods followed by the “Performance prediction” pod. Using Riegel’s endurance model, this pod displays the predicted time, speed, and pace over standard swimming race distances.
For rowing computations, you can also specify an experience level, which takes into account the efficiency of body movements as well as the metabolic processes of the rower. You can add experience into the equation by pressing the orange “experience” link located below the basic input fields, or by using natural language input:
We invite you to consult Wolfram|Alpha for tailored results following your next aquatic workout. What’s your favorite water-based activity for staying fit and having fun during these lazy days of summer?