Measuring strength | Right Decisions

Update your RDS mobile app to v4.7.2 to download toolkits even when website is down.

We are pleased to advise that deep linking capability, enabling users to directly download individual mobile toolkits, has now been released on the RDS mobile app. You will see that each toolkit has a small QR code icon in the header area beside the search icon – see screenshot below. Clicking on this icon will open up a window with a full-size QR code and the alternative of a short URL for sharing with users. Instructions are provided.

You may need to actively update to the latest release - RDS app version 4.7.1 - to see this improvement.

Updating to this latest version of the RDS app is also strongly recommended to get the full benefits of the new resilience arrangements – specifically, that if the RDS website should fail, you will still be able to download new mobile app toolkits. To check your current RDS version, click on the three dots bottom right of the RDS app screen. This takes you to a “More” page where you will see the version number. To install latest updates:

On iPhones – go to the Apple store, click on your profile icon top right, scroll down to see the apps waiting to be updated and update the RDS app.

On Android phones – these can vary, but try going to the Google Play store, click on your profile icon top right, click on “Manage apps and device”, select and update the RDS app.

Please get in touch with ann.wales3@nhs.scot with any questions.

Leg Press/Sit to Stand

Test either Leg Press (if machine is available) or single leg sit to stand.

Leg Press

Measuring 1RM in post operative patients/rehabilitation may not be appropriate; either 5RM/10RM may be more suitable. LSI can be calculated using these parameters.

If Leg Press is unavailable, then a max rep single leg sit to stand can be used. This is demonstrated in the following video:

Mick Hughes Single Leg Sit To Stand (video link)

Single Leg Bridge

Patient in Supine bridge position, knees at 90˚. Ask patient to lift one foot from the floor and proceed to bridge 20 repetitions, or until fatigue or unable to complete a full repetition.

Repeat on opposite leg. Use the numbers for each leg to calculate LSI.

Pure Physio Single Leg Bridge Test (video link)

Calculation of Limb Symmetry Index (LSI)

LSI (%) = Injured Limb Score ÷ Uninjured Limb Score x 100

Calculation of Relative Strength Index (RSI)

RSI (%) = weight pushed (Kg) ÷ bodyweight (Kg) x 100

Last reviewed: 22/07/2024

Next review date: 22/07/2025

Approved By: MSK Physiotherapy Extended Management Team

Reviewer name(s): Louise Ross, Alison Baird, Karen Glass.