Hoffmann et al. (CHMS)
About this reference
The Canadian Health Measures Survey (CHMS) is a nationally representative survey run by Statistics Canada, collecting directly measured health data at mobile examination centres. Cycle 5 (2016-2017) included a physical fitness battery administered by specialists certified by the Canadian Society for Exercise Physiology. Jumping power is measured by jumping mechanography: a two-leg countermovement jump performed on a Leonardo Mechanograph Ground Reaction Force Plate (Novotec Medical GmbH), sampling ground reaction forces at 400 or 800 Hz. After one or two practice jumps, participants completed three valid trials to a maximum of five, and were permitted to swing their arms. The trial in which the participant jumped highest was selected, and power from that trial is reported in kilowatts. Table 5 of the article reports percentile values at P5, P10, P20, P30, P40, P50, P60, P70, P80, P90 and P95 by sex for 16 age groups from 8-9 through 65-69.
Known limitations
- Based on a Canadian sample, so values may not generalise to all populations
- Jumping power is reported in kilowatts and is not scaled to body size, so the percentiles compare absolute output rather than output per kilogram
- The published n of 5,188 is the full cycle 5 fitness subsample across all five tests, not the jumping-power sample; the article restricts the jump analysis to ages 8 to 69 and reports per-test counts only in a flowchart figure whose values are not given in the text
- The authors note the survey's health-related focus may have had a larger impact on recruiting fitter children and adolescents, so youth percentiles may sit slightly high
- No data for adults aged 70 and above, or for children under 8
- Values are specific to force-plate jumping mechanography. The study authors state these norms should be compared only with data generated on the Leonardo Mechanograph force plate, given known systematic biases in jumping height data against field-based protocols, and note that protocol differences matter even between studies using the same plate
- P25 and P75 are FitnessNorms midpoint estimates from the published P20/P30 and P70/P80 columns, not percentiles printed in the article
- Cycle 5 had a combined response rate of 48.5%. Survey weights account for non-response and the complex sampling design
- The reported trial is the one in which the participant jumped highest, not the trial with the highest power, so a participant's peak power across attempts may be higher