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Interval Analysis

AUTO INTERVAL DETECTION & QUALITY SCORING

Every JoyTrain live session is auto-segmented into work / rest intervals, grouped into sets, scored for achievement / stability / decay / rest quality, and surfaced with optimization hints. No need to manually tag your intervals.

90%+ detection accuracy4-axis quality scoreOptimization hintsStart a live session
Demo data
Session time
50 min
Avg power
187 W
75% FTP
Normalized power
230 W
IF 0.92
Work reps detected
5
15.0 min

Manual Segment Edits

Auto-detected 11 segments. 0 marked invalid. Effective work time: 50 min.

0W50W100W150W200WSegment 1 · 10 min minSegment 2 · 3 min minSegment 3 · 3 min minSegment 4 · 3 min minSegment 5 · 3 min minSegment 6 · 3 min minSegment 7 · 3 min minSegment 8 · 3 min minSegment 9 · 3 min minSegment 10 · 3 min minSegment 11 · 13 min min0m12m25m37m50m

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Interval 1 · 5×3 min @ 123% FTP

single group

Decay from first to last rep, group-level quality score, and per-rep breakdown.

286W297W307W318W329W313R1310R2306R3304R4301R5
First rep
313 W
Last rep
301 W
Decay
-3.8%
Good — minor decay, well-paced.

Quality Score

Four-axis scoring from the JoyTrain analyzer.

86/ 100
Achievement98
Stability97
Decay control85
Rest quality54
Stable performance this set — keep current pace.

Detected Interval Groups

The detector found 1 interval groups in this session, totaling 5 work reps and 15.0 min of work.

#LabelWork repsWork timeRest timeAvg work WPeak W% FTPDecay
1Interval 1515:0028:27307319123%-3.8%
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This is a demo report with a synthetic 5×3-min VO2max session. Real sessions appear here automatically after they sync to JoyOne.