RSI Calculator Results
Name: participant.first participant.last
Time: _.localTime
reactive_strength_30cm.rsi = reactive_strength_30cm.jump_height / reactive_strength_30cm.contact_time / 1000
reactive_strength_30cm.rsi_table_index = ((reactive_strength_30cm.rsi - 1.5) / 0.5) + 1
reactive_strength_30cm.rsi | Your RSI |
|---|---|
| -1.5 | Low |
| 1.5 - 2.0 | Moderate |
| 2.0 - 2.5 | Good |
| 2.5 - 3.0 | High level |
| 3.0+ | World class |
What is Reactive Strength Index
The Reactive Strength Index (RSI) is a measure used in sports science to evaluate an athlete’s explosive strength and ability to quickly transition from an eccentric (muscle lengthening) to a concentric (muscle shortening) contraction. It’s often used to assess performance in activities that require rapid force production, such as jumping.
RSI is calculated by dividing the height of a jump by the contact time on the ground. A higher RSI indicates better reactive strength, meaning the athlete can generate more force in a shorter amount of time. This metric is particularly useful for coaches and trainers to monitor and improve an athlete’s plyometric performance and overall explosiveness.
If you’re interested in how to measure RSI or its applications in training, feel free to ask!