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Test 4

Performed at:


Additional Information

Bio

21.1

Stats
51.50
Maximum oxygen uptake per kg body mass
111.8
Heart rate at aerobic threshold (avg VT1+BP1 & DFAa1 0.75)
172.3
Heart rate at anaerobic threshold (avg VT2+BP2 & DFAa1 0.50)
-
-
Maximum rate of fat oxidation
-
Maximum rate of carbohydrate oxidation
184
Maximum heart rate
2.50
Maximum tidal volume
25.3
First ventilatory threshold
47.3
Second ventilatory threshold
17.50
Fraction of expired oxygen
184
Maximum heart rate measured at VO2max
-
Maximum power measured at VO2max
-
Power at first ventilatory threshold
-
Power at second ventilatory threshold
-
Power at HRV nonlinear index at 0.75
-
Power at HRV nonlinear index at 0.50
-
Muscle-O2 breakpoint 1 (slope inflection)
-
Muscle-O2 breakpoint 2 (slope inflection)
173.4
Heart rate at VT2 (derivative VE method)
-
Heart rate at VT2 (CO2 method)
-
Power at muscle-O2 breakpoint 2 (slope inflection)
0.00
VE/VO2
136.10
Maximum minute ventilation
55.10
Highest respiratory frequency
21.1

Trim

Start time in minutes for trimming the analyzed data
End time in minutes for trimming the analyzed data

Ventilation thresholds

Override VT1 threshold time (mm:ss)
Override VT2 threshold time (mm:ss)
Override VT2 VCO2 threshold time (mm:ss)

Muscle Oxygenation (Break Points)

Override BP1 SmO2 threshold time (mm:ss)
Override BP2 SmO2 threshold time (mm:ss)

Detrended fluctuation analysis (DFA alpha1)

Override DFA a1 0.75 threshold time (mm:ss)
Override DFA a1 0.5 threshold time (mm:ss)

Effort Cues (S/L/O/E)

Time when sweating started (mm:ss). Look for: sweat on forehead/face, jersey getting wet, dripping
Time when loud breathing started (mm:ss). Look for: audible heavy breathing, mouth breathing, short/rapid breaths
Time when oscillations started (mm:ss). Look for: rocking hips, upper-body swaying, bouncing on saddle, loss of rhythm
Why the test ended. Look for: legs exhausted, breathing limit, pain, nausea, dizziness, equipment issue

Prompts

You are a sports physiologist for athletes. Based on the test results, HR parameters and the athlete's goals, you will need to prepare a detailed Vo2max report. Take the VO2max and determine which group the athlete belongs to based on age and gender. If you notice low VO2max values that may be limiting the athlete's performance, be sure to point them out. Then, based on the athlete's goals, give detailed recommendations on how to improve VO2max as well as other key metrics. Write an example of an overall training plan to improve VO2max for this athlete.

Age: 40 years
Height: 190 cm
Weight: 76 kg
BMI: 21.1
Sex: male
Training volume: 3 per week
Training experience: None
Chronic diseases: None
Health goals: None
Test type: None
Maximum oxygen uptake per kg body mass (VO2max): 51.50 mL/kg/min
Maximum heart rate measured at VO2max (HRmax VO2max): 184.00 bpm
Maximum power measured at VO2max (Pmax VO2max): None

Maximal Metrics

51.5
mL/kg/min
VO₂max
184
bpm
Heart Rate
136
L/min
Ventilation
2.5
L
Tidal Volume
55
br/min
Resp. Frequency

Maximal metrics values are provided at the time of VO₂max.

Thresholds

Aerobic Threshold (VT1)
112
bpm
Anaerobic Threshold (VT2)
172
bpm

Thresholds are transitions in patterns of breathing, SmO₂, DFAα1 etc.

Training Zones

Z1
<106
bpm
Z2
107-112
bpm
Z3
113-172
bpm
Z4
173-175
bpm
Z5
>176
bpm

Training zones are based on ventilatory thresholds (VT1, VT2) and VO₂max.

Summary

Summary Report is not available.

VO2max Analysis

2026-06-17T14:23:29.570370 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
Maximal oxygen uptake (VO2max) VO₂ [mL/kg/min] HR [bpm] Power [W] Pace [min/km]
Values at VO2max 51 184 — —

No VO2max Analysis available.

Respiratory Analysis

2026-06-17T14:23:32.607074 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
Parameter Value at VO₂max Unit
Maximal oxygen uptake (VO2max) 51 mL/kg/min
Fraction of expired oxygen (FeO₂) 17 %
Tidal volume (Tv) 2.5 L
Ventilation (Ve) 136 L/min
Respiratory frequency 55 br/min

No Respiratory Analysis available.

Ventilation thresholds

2026-06-17T14:23:31.356154 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
Threshold VO₂ [mL/kg/min] HR [bpm] Power [W] Pace [min/km]
Ventilation threshold 1 (FeO₂) 25 112 — —
Ventilation threshold 2 (Ve) 47 172 — —

No Ventilation thresholds Analysis available.

Show Progress Charts
VT1 (FeO2)
2026-06-17T14:23:28.636518 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
VT2 (Ve)
2026-06-17T14:23:28.798652 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
VT2_DVE
2026-06-17T14:23:28.933106 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
VT2_CO2
No data available
Show calculation methods and references

Ventilatory Thresholds (VT1 & VT2)

Ventilatory thresholds are determined from breath-by-breath gas-exchange during an incremental cardiopulmonary exercise test (CPET).

  • VT1 (FeO₂) (1) – first ventilatory threshold: the workload at which expired O₂ fraction (FeO₂) and VE/VO₂ start to rise systematically while VE/VCO₂ and end-tidal CO₂ remain stable, indicating the transition from purely aerobic to mixed aerobic–anaerobic metabolism.
  • VT2 (Ve) (1) – second ventilatory threshold (respiratory compensation point): the workload at which minute ventilation (VE) shows a clear second, non-linear increase relative to workload or VCO₂ because of respiratory compensation for metabolic acidosis.
  • VT2_DVE (2) – VE-curve method: derived from the VE–time (or VE–workload) curve alone and defined as the workload where VE leaves its previous near-linear trend and enters the main "bend" of the curve—the onset of the sharp upswing in VE, rather than the exact mathematical intersection of the two surrounding slopes.
  • VT2_CO₂ (3) – CO₂-based method: the workload where end-tidal CO₂ (PETCO₂) reaches a peak and then falls while VE/VCO₂ begins to rise, indicating the onset of respiratory compensation for metabolic acidosis.

References

  1. Wasserman K, Whipp BJ, Koyal SN, Beaver WL. Anaerobic threshold and respiratory gas exchange during exercise. Journal of Applied Physiology. 1973;35(2):236–243.
  2. Neder JA, Stein R. A simplified strategy for the estimation of the exercise ventilatory thresholds. Medicine and Science in Sports & Exercise. 2006;38(5):1007–1013.
  3. Mezzani A. Cardiopulmonary Exercise Testing: Basics of Methodology and Measurements. Annals of the American Thoracic Society. 2017;14(Supplement_1):S3–S11.

Training Zones

2026-06-17T14:23:28.271004 image/svg+xml Matplotlib v3.10.9, https://matplotlib.org/
Zone HR (bpm) Power (W) VO2 (mL/kg/min) Pace (min/km)
z1 <106 - <21.1 -
z2 107-112 - 21.2-25.2 -
z3 113-172 - 25.3-47.3 -
z4 173-175 - 47.4-49.1 -
z5 >176 - >49.2 -

No Training Zones Analysis available.

Files

File Analyze Delete?

DataAverage.xlsx for test 4

DataAverage.xlsx

Report.pdf for test 4

Report.pdf

VO2MasterUnit-Data.xlsx for test 4

VO2MasterUnit-Data.xlsx

HR_HeartRateMonitor-Data.xlsx for test 4

HR_HeartRateMonitor-Data.xlsx

Files Upload

Supported files: 'VO2MasterUnit-Data...', 'HR...', 'HeartRate...', 'CyclingPower..', 'DFA..', 'TrainRed..', 'Pnoe_..', 'CPET_..', '*lactate*' (.xlsx/.csv), 'DataAverage...'.