Who am I compared to?
The data we currently have is based on healthy populations. When you provide the patient's age and gender, the app will display the corresponding values for that specific age range and gender. The age ranges we consider are as follows:
- 18 to 30
- 31 to 40
- 41 to 50
- 51 to 60
- 61 and above.
This is true for the grip and the bilateral stance assessments.
For the CMJ assessments we use data collected from high performing athletes (basketball, rugby and soccer) for both males and females within the age of 18 and 32 years old.
For the Kpush and Kpull isometric strength tests we are using as reference values the norms that are reported from Mckay et al. (10.1212/WNL.0000000000003466 ).
How are the displayed numbers calculated?
To generate the rankings displayed in the assessments, we utilize percentile ranking. This method enables us to determine where an individual stands within the population based on specific variables, such as Fmax, Power RFD, and others, as measured in the Kinvent physio.
To calculate a percentile ranking, we gather data on the variable of interest from the entire population in our database. After removing any nonsensical values, we arrange the individuals in descending order based on that particular variable.
Once the individuals are ranked, we can determine the percentage of the population that falls below a specific individual. For example, if an individual’s test score is higher than that of 75% of the population, their percentile rank would be 75.
Percentile ranking is a valuable tool as it allows for comparisons of an individual’s performance against the entire population. It also helps identify outliers or individuals who exhibit exceptional performance, whether positively or negatively.