name: Sine over-unders
description: >-
  Warm-up ramp, then eight sinusoidal cycles oscillating either side of
  threshold, then a cool-down. Power-channel, so the trainer holds the target
  regardless of cadence.
looping: false

blocks:
  # Ten-minute warm-up, 100 W rising to 200 W.
  - type: ramp
    channel: power
    from: 100.0
    to: 200.0
    extent:
      seconds: 600.0

  # Eight two-minute cycles: 240 W mean, +/- 40 W.
  - type: wave
    channel: power
    shape: sine
    midpoint: 240.0
    amplitude: 40.0
    period:
      seconds: 120.0
    repeats: 8.0

  # Five-minute cool-down.
  - type: constant
    channel: power
    value: 120.0
    extent:
      seconds: 300.0