Video Analysis of "Cool Skating Move"

As with any sport, ice skating can be analysed in graphs. Consider the following graph below, excerpted from the upcoming Volume 9 of Glide, Spin, & Jump! The Science of Ice Skating by Schottenbauer Publishing. 

Discussion Questions

1. What body parts are moving in this example?
2. Which body part moves the most in the x direction? In the y direction?
3. What is the name of this move?

Now, consider the following pictures, excerpted from the video. (This move is shown in the YouTube Video Cool Skating Move.) 

Discussion Questions

1. Is this move in the first or second half of the graph?
2. What is the primary motion which occurs between these two pictures?
3. What concept(s) from physics are relevant for this move?
4. Is this move found in (a) figure skating, (b) ice hockey, or (c) both?

The diagram below highlights the move on the graph.

Discussion Questions

1. Which body part moves the most during this segment of the graph?
2. Which body part moves the most in the x direction? In the y direction?

Additional free graphs are available in a free pamphlet from the publisher's webpage. 

The following books from Schottenbauer Publishing contain similar types of graphs and data pertaining to the science of ice skating, figure skating, and hockey:

Graphs & Data for Science Lab: Multi-Volume Series

• The Science of Ice Skating 
• Volume 1: Translational Motion
• Volume 2: Rotational Motion (Curves)
• Volume 3: Rotational Motion (Spins)
• Volume 4: Jumps
• Volume 5: Ice Hockey
• Volume 6: Biophysics
• Volume 7: Video Analysis
• Volume 8: Reference Manual
• The Science of Hockey
• Volume 1: Force, Acceleration, & Video Analysis of Pucks & Balls
• Volume 2: Force & Acceleration of Sticks, plus Biophysics
• Volume 3: Video Analysis of Ice, Field, & Street Hockey Sticks

Anthologies of 28 Graphs

• The Science of Figure Skating
• The Science of Ice Hockey
• The Science of Winter Olympic Sports

Additional Information

Schottenbauer Publishing

Free Education Resources

Affordable Synthetic Ice for Home Practice

The location and cost of ice rinks is often a limiting factor for families interested in recreational skating. Fortunately, several low-cost options are available for both ice hockey and figure skaters.

Shooting Boards
Starting at less than $100, it is possible to purchase various types of hockey shooting pads. These are plastic boards which can be used for practicing puck handling techniques, but not skating. These boards, approximately 2 to 4 feet wide and 4 to 8 feet long, are available from a variety of manufacturers and stores.

HDPE, US Plastic Corporation
High Density Polyethylene (HDPE) is an affordable plastic which can be purchased directly from a manufacturing company, starting at only $2 to $3 per square foot. As a low-glide surface, it is suitable for ice hockey practice and some basic figure skating. A demonstration video available on YouTube shows the use of two HDPE sheets, each 4 x 8 feet and 3/16 inches thick, from US Plastics Corporation. In February 2014, these two sheets cost only $140, plus a $140 freight shipping charge! Placed side by side, these two sheets make a rink 8 feet by 8 feet.

UHDPE, Direct Import from China
The next best surface is Ultra-High Density Polyethylene (UHDPE), which is commonly used at commercial synthetic ice rinks. These are available from various companies in the USA and abroad, but the best value can be imported direct from China. According to a February 2015 estimate, an Olympic-sized synthetic ice rink (100 ft x 200 ft UHDPE) with sideboards is available for only $22,000, including shipping to East Coast USA! (Import tax and transportation from seaport were not included in this estimate.)

Recycled Plastic, Budget Ice from Canada
One of the lowest-cost synthetic rinks in North America is a recycled plastic surface available from Canada. A small sample is available for only $208 plus tax and shipping, according to an estimate in October 2015.

Sinter-Pressed, SmartRink from Canada
One of the highest-quality synthetic ice consists of sinter-pressed materials, which are reported not to flake or scratch like other brands. This surface is available from Canada, as well as some US warehouse locations.

Buildings
Ice rinks can range from a recreation-room or basement model  (e.g., 8' x 8') to a full Olympic sized rink. Although outdoor rinks offer a lower cost and the ambiance of outdoors, indoor rinks have many additional benefits. For instance, indoor rinks allow for more flexibility of use, such as skating at night and during bad weather, as well as protection from leaves and organic matter. Some of the most common buildings used for ice rinks include tension fabric structures, steel structures, and pole barns. These options are available at ultra low-cost from China, with prices as low as $3 per square foot, compared to US models from $9 per square foot or more! Some companies also offer free installation options.


Additional Information

Schottenbauer Publishing

Free Education Resources

The Physics of Spins

Acceleration is an important feature of all ice skating. The same as with motion, acceleration can be translational (in a straight line), or rotational (in a circle). If acceleration is rotational, then it is in an axial direction, pointing inward to the center of the circle of motion. This form of acceleration is called centripetal acceleration.

Consider the following graph, excerpted from The Science of Ice Skating: Volume 3 from Schottenbauer Publishing. The graph shows acceleration during a figure skating spin.

Discussion Questions

1. Initially, which direction is vertical or nearly vertical?
2. At the end, which direction is vertical or nearly vertical?
3. Describe the relationship between the initial and final angles of the foot in relation to the floor.
4. Is it possible to identify how many revolutions are present? If so, how many? If not, why?
5. Is it possible to determine whether this is a slow or fast spin? If so, which is it?
6. What is the initial velocity? The final velocity?
7. What is most likely the cause of the spikes in the graph?

Additional free graphs are available in a free pamphlet from the publisher's webpage. 

The following books from Schottenbauer Publishing contain similar types of graphs and data pertaining to the science of ice skating, figure skating, and hockey:

Graphs & Data for Science Lab: Multi-Volume Series

• The Science of Ice Skating 
• Volume 1: Translational Motion
• Volume 2: Rotational Motion (Curves)
• Volume 3: Rotational Motion (Spins)
• Volume 4: Jumps
• Volume 5: Ice Hockey
• Volume 6: Biophysics
• Volume 7: Video Analysis
• Volume 8: Reference Manual
• The Science of Hockey
• Volume 1: Force, Acceleration, & Video Analysis of Pucks & Balls
• Volume 2: Force & Acceleration of Sticks, plus Biophysics
• Volume 3: Video Analysis of Ice, Field, & Street Hockey Sticks

Anthologies of 28 Graphs

• The Science of Figure Skating
• The Science of Ice Hockey
• The Science of Winter Olympic Sports

Additional Information

Schottenbauer Publishing

Free Education Resources