Catapult has engineered the Tennis Analytics suite, which quantifies and categorizes Tennis movements and stroke types on the court to help coaches make better decisions for their athletes and identify the causes of performance strain with more accuracy.
It uses the inertial sensors inside the device to provide absolute and relative time spent in the five movement categories:
- Running
- Dynamic
- Alert
- Low Intensity
- Passive
And four stroke types:
- Serve
- Right-to-left strokes
- Left-to-right strokes
- Other strokes
Identification of these movements and strokes allow for better insights on mechanical work done by athletes during an activity. Thereby, allowing practitioners to make more informed decisions on load management.
For more information on how these metrics are detected and calculated, see Tennis Analytics explained. Note: this article has restricted access - please sign in to see all details.
Tennis Parameter Definitions
|
Parameter |
Definition |
Unit of measurement |
|---|---|---|
|
Stroke Counts |
||
|
Total Stroke Count |
Total number of strokes i.e. the sum of all Serves, Right-to-left, Left-to-right and Other stroke counts |
# |
|
Serve Count |
Total number of serves |
# |
|
Right-to-left Stroke Count |
Total number of Right-to-left strokes Right-to-left strokes are a 'right handed forehand / left handed backhand' |
# |
|
Left-to-right Stroke Count |
Total number of Left-to-right strokes Left-to-right strokes are a 'left handed forehand / right handed backhand' |
# |
|
Other Stroke Count |
Total number of Other strokes Other strokes consist of overheads, volleys, blocks and improvised shots |
# |
|
Total Strokes / Min |
The Total # Strokes accumulated per minute of the selected period(s)/activity(s) (Total Strokes / Duration in seconds) * 60 |
# |
|
Tennis Loads |
||
|
Total Tennis Load |
Total accumulated Tennis Load i.e. the sum of Serve Load, Right-to-left Stroke Load, Left-to-right Stroke Load, Other Stroke Load, Tennis Dynamic Load, Tennis Alert Load, Tennis Running Load,Tennis Low intensity Load |
arb |
|
Serve Load |
Total tennis load accumulated during all Serve strokes |
arb |
|
Right-to-left Stroke Load |
Total tennis load accumulated during all Right-to-left strokes |
arb |
|
Left-to-right Stroke Load |
Total tennis load accumulated during all Left-to-right strokes |
arb |
|
Other Stroke Load |
Total tennis load accumulated during all Other strokes |
arb |
|
Tennis Dynamic Load |
Total tennis load accumulated during movements classified in the Dynamic category |
arb |
|
Tennis Alert Load |
Total tennis load accumulated during movements classified in the Alert category |
arb |
|
Tennis Running Load |
Total tennis load accumulated during movements classified in the Running category |
arb |
|
Tennis Low intensity Load |
Total tennis load accumulated during movements classified in the Low intensity category |
arb |
|
Total Tennis Load / Min |
The Total Tennis Load accumulated per minute of the selected period(s)/activity(s). (Total Tennis Load / Duration in seconds) * 60 |
arb |
|
Tennis Stroke and Movement durations |
||
|
Serve Duration |
The total duration spent performing all Serve strokes |
HH:MM:SS |
|
Right-to-left Stroke Duration |
The total duration spent performing all Right-to-left strokes |
HH:MM:SS |
|
Left-to-right Stroke Duration |
The total duration spent performing all Left-to-right strokes |
HH:MM:SS |
|
Other Stroke Duration |
The total duration spent performing all Other strokes |
HH:MM:SS |
|
Tennis Dynamic Duration |
The total duration spent accumulating Dynamic Tennis Load |
HH:MM:SS |
|
Tennis Alert Duration |
The total duration spent accumulating Dynamic Tennis Load |
HH:MM:SS |
|
Tennis Running Duration |
The total duration spent accumulating Dynamic Tennis Load |
HH:MM:SS |
|
Tennis Low intensity Duration |
The total duration spent accumulating Low Intensity Tennis Load |
HH:MM:SS |
|
Tennis Passive Duration |
The total duration spent accumulating Passive Tennis Load |
HH:MM:SS |
|
Serve Duration % |
The percentage of time spent performing all Serve Strokes relative to the duration of the activity or period selected |
% |
|
Right-to-left Stroke Duration % |
The percentage of time spent performing all Right-to-left Strokes relative to the duration of the activity or period selected |
% |
|
Left-to-right Stroke Duration % |
The percentage of time spent performing all Left-to-right Strokes relative to the duration of the activity or period selected |
% |
|
Other Stroke Duration % |
The percentage of time spent performing all Other Strokes relative to the duration of the activity or period selected |
% |
|
Tennis Dynamic Duration % |
The percentage of time spent accumulating Dynamic Tennis Load relative to the duration of the activity or period selected |
% |
|
Tennis Alert Duration % |
The percentage of time spent accumulating Alert Tennis Load relative to the duration of the activity or period selected |
% |
|
Tennis Running Duration % |
The percentage of time spent accumulating Running Tennis Load relative to the duration of the activity or period selected |
% |
|
Tennis Low intensity Duration % |
The percentage of time spent accumulating Low Intensity Tennis Load relative to the duration of the activity or period selected |
% |
|
Tennis Passive Duration % |
The percentage of time spent accumulating Passive Tennis Load relative to the duration of the activity or period selected |
% |
|
Tennis Stroke mean rotation |
||
|
Serve mean rotation magnitude |
The average rotation magnitude achieved across all Serve Strokes Total Serve Rotation magnitude / Serve # |
Revolutions/second |
|
Right-to-left Stroke mean rotation magnitude |
The average rotation magnitude achieved across all Right-to-left Strokes Total Right-to-left Rotation magnitude / Right-to-left Stroke # |
Revolutions/second |
|
Left-to-right Stroke mean rotation magnitude |
The average rotation magnitude achieved across all Left-to-right Strokes Total Left-to-right Rotation magnitude / Left-to-right stroke # |
Revolutions/second |
|
Other Stroke mean rotation magnitude |
The average rotation magnitude achieved across all Other Strokes Total Other Rotation magnitude / Other stroke # |
Revolutions/second |