Reports / mr_ma_elias
Z25 REPORT
Elias Voss
Recreational football · 9/8/2026 · KRS-27 phantom scaled
Legacy Z25 teaching reference. The KRS-27 values have not been independently sourced or validated. Bands and indices below are illustrative, not muscle diagnoses, clinical thresholds or treatment recommendations.
Illustrative index
11/100
Symmetry SI
5.5%
Phantom index
39
BMI (descriptive)
23.4kg/m²
Cartography
Sage fill scales with stature-adjusted z versus KRS-27.
Regional development
Bilateral symmetry
Zone table
| Zone | cm | Scaled | z | Band |
|---|---|---|---|---|
| Chest Width | 32.0 | 30.6 | -0.96 | Lower demo band |
| L Deltoid | 35.4 | 33.8 | -0.91 | Lower demo band |
| R Deltoid | 36.2 | 34.6 | -0.64 | Lower demo band |
| L Upper Arm | 30.4 | 29.1 | -0.82 | Lower demo band |
| R Upper Arm | 31.1 | 29.7 | -0.56 | Lower demo band |
| L Forearm | 26.2 | 25.0 | -1.03 | Lower demo band |
| R Forearm | 26.6 | 25.4 | -0.81 | Lower demo band |
| Waist | 79.4 | 75.9 | -0.08 | Near demo reference |
| Chest Circ. | 96.2 | 92.0 | -0.91 | Lower demo band |
| L Thigh | 50.2 | 48.0 | -2.18 | Below demo reference |
| R Thigh | 57.8 | 55.3 | -0.53 | Lower demo band |
| L Calf | 33.1 | 31.6 | -2.06 | Below demo reference |
| R Calf | 36.9 | 35.3 | -0.61 | Lower demo band |
| Upper Traps | 39.4 | 37.7 | -0.84 | Lower demo band |
| L Rear Delt | 34.2 | 32.7 | -0.92 | Lower demo band |
| R Rear Delt | 34.8 | 33.3 | -0.70 | Lower demo band |
| L Lat Width | 28.6 | 27.3 | -0.79 | Lower demo band |
| R Lat Width | 29.1 | 27.8 | -0.61 | Lower demo band |
| L Tricep | 29.4 | 28.1 | -0.92 | Lower demo band |
| R Tricep | 30.0 | 28.7 | -0.69 | Lower demo band |
| Lower Back | 82.6 | 79.0 | -0.29 | Near demo reference |
| L Glute | 90.4 | 86.4 | -1.55 | Below demo reference |
| R Glute | 95.8 | 91.6 | -0.59 | Lower demo band |
| L Hamstring | 49.6 | 47.4 | -2.00 | Below demo reference |
| R Hamstring | 56.2 | 53.7 | -0.49 | Near demo reference |
Proportionality ratios
- Waist : chest0.83
Descriptive girth ratio. No validated target or performance inference.
- Thigh : calf1.54
Descriptive girth ratio. No validated target or performance inference.
- Quad girth : ham girth1.02
Descriptive girth ratio. No validated target or performance inference.
- Arm : chest0.32
Descriptive girth ratio. No validated target or performance inference.
- Gluteal : waist1.17
Descriptive girth ratio. No validated target or performance inference.
Interpretation boundary
Automated exercise prescriptions are disabled. Girth measurements do not establish muscle strength, activation, injury risk or a need for treatment.
Methods note
Measured girths are retained in centimetres. Scaled values use a stature reference of 170.18 cm. The legacy KRS-27 comparison table is unverified; use it only to demonstrate calculations, not as a normative population.