⏵ Physical measures
⏵ Hand grip strength
This category contains data on right and left hand isometric grip strength, measured using a Jamar J00105 hydraulic hand dynamometer. Calibration records for the dynamometers are available in Resource 2431
, Resource 2432
and Resource 2433
, with a description in Resource 2434
The hand dynamometers in use at UK Biobank assessment centres were calibrated externally. This resource makes the calibration data available to researchers.
Each dynamometer is listed by its UKB_ID, which is the same as the Device ID listed in Field 38
Records exist from three different calibration companies. The format of the calibration certificates varies with company and over time. Some certificates state only whether the dynamometer passed or failed. Others include records of the pre-adjustment test values at 10, 30, 50, 70 and 90 kg.
Where pre-adjustment values are recorded, they are formatted in two possible ways. Either a standard input such as 10 kg is applied, and the corresponding reading on the dynamometer dial is recorded, or sufficient input is applied to produce a standard reading such as 10 kg on the dynamometer dial, and the size of the input is recorded.
Three different tsv files are therefore provided: Resource 2434
- Resource 2431 has the records that state only pass or fail or an adjustment comment, with no values.
- Resource 2432 has the records that use standard input weights.
- Resource 2433 has the records that use standard readings.
provides a text description of the calibration data.