What is the Reactive Strength Index (RSI)?

RSI measures explosive, reactive power, how well you absorb and rebound from landing. It is calculated from a drop jump and reflects your ability to produce force quickly, a key quality for sprinting, jumping, and other fast stretch-shortening movements.

How is RSI calculated?

RSI = jump height / ground contact time, both during a drop jump. Enter your jump height and the time your feet spend on the ground between landing and take-off, and the calculator returns your RSI along with a rating.

What is a good RSI value?

RSI is typically expressed in metres per second; values around 1.5-2.0 are good and above roughly 2.5-3.0 indicate excellent reactive strength, while below 1.5 suggests room to improve. The aim is high jump height with minimal ground contact time.

Reaktiewe Sterkte-indeks-sakrekenaar

Jou RSI uit spronghoogte en kontaktyd

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Spronghoogte (cm)

afspring-spronghoogte, bv. 30

Grondkontaktyd (ms)

millisekondes op die grond, bv. 200

Reaktiewe Sterkte-indeks-sakrekenaar

Die Reaktiewe Sterkte-indeks is die go-to-veldtoets van plofbare, reaktiewe krag vir springers en naelloop-atlete. Voer jou afspring-spronghoogte en jou grondkontaktyd in, en hierdie sakrekenaar gee jou RSI terug — spronghoogte gedeel deur kontaktyd — plus 'n graderingsband. Gebruik dit om pliometriese oefening te monitor, neuromuskulêre vermoeidheid te bestuur, en reaktiewe vermoë tussen atlete te vergelyk.

Die Reaktiewe Sterkte-indeks (RSI) meet hoe goed jy impak verdra en hergebruik: spronghoogte gedeel deur grondkontaktyd, vanaf 'n afspring-sprong. 'n Hoër RSI beteken 'n meer plofbare, veerkragtiger rek-verkortingsiklus. Tipiese riglynwaardes: onder 0.5 laag, rondom 1.0 gemiddeld, 1.5–2.5 goed, bo 2.5 elite. Meet kontaktyd met 'n sprongmat of kragplaat en hou die afspringhoogte dieselfde om verandering te volg.

Gereelde Vrae

What is the Reactive Strength Index (RSI)?: RSI measures explosive, reactive power, how well you absorb and rebound from landing. It is calculated from a drop jump and reflects your ability to produce force quickly, a key quality for sprinting, jumping, and other fast stretch-shortening movements.
How is RSI calculated?: RSI = jump height / ground contact time, both during a drop jump. Enter your jump height and the time your feet spend on the ground between landing and take-off, and the calculator returns your RSI along with a rating.
What is a good RSI value?: RSI is typically expressed in metres per second; values around 1.5-2.0 are good and above roughly 2.5-3.0 indicate excellent reactive strength, while below 1.5 suggests room to improve. The aim is high jump height with minimal ground contact time.

Reaktiewe Sterkte-indeks-sakrekenaar

Gereelde Vrae

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