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193
models/zones.py
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193
models/zones.py
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"""Zone definitions and calculations for workouts."""
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from typing import Dict, Tuple, List
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from dataclasses import dataclass
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@dataclass
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class ZoneDefinition:
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"""Definition of a training zone."""
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name: str
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min_value: float
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max_value: float
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color: str
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description: str
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class ZoneCalculator:
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"""Calculator for various training zones."""
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@staticmethod
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def get_power_zones() -> Dict[str, ZoneDefinition]:
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"""Get power zone definitions."""
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return {
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'Recovery': ZoneDefinition(
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name='Recovery',
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min_value=0,
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max_value=150,
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color='lightblue',
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description='Active recovery, very light effort'
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),
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'Endurance': ZoneDefinition(
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name='Endurance',
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min_value=150,
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max_value=200,
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color='green',
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description='Aerobic base, sustainable for hours'
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),
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'Tempo': ZoneDefinition(
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name='Tempo',
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min_value=200,
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max_value=250,
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color='yellow',
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description='Sweet spot, sustainable for 20-60 minutes'
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),
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'Threshold': ZoneDefinition(
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name='Threshold',
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min_value=250,
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max_value=300,
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color='orange',
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description='Functional threshold power, 20-60 minutes'
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),
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'VO2 Max': ZoneDefinition(
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name='VO2 Max',
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min_value=300,
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max_value=1000,
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color='red',
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description='Maximum aerobic capacity, 3-8 minutes'
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)
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}
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@staticmethod
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def get_heart_rate_zones(lthr: int = 170) -> Dict[str, ZoneDefinition]:
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"""Get heart rate zone definitions based on lactate threshold.
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Args:
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lthr: Lactate threshold heart rate in bpm
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Returns:
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Dictionary of heart rate zones
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"""
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return {
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'Z1': ZoneDefinition(
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name='Zone 1',
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min_value=0,
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max_value=int(lthr * 0.8),
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color='lightblue',
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description='Active recovery, <80% LTHR'
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),
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'Z2': ZoneDefinition(
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name='Zone 2',
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min_value=int(lthr * 0.8),
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max_value=int(lthr * 0.87),
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color='green',
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description='Aerobic base, 80-87% LTHR'
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),
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'Z3': ZoneDefinition(
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name='Zone 3',
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min_value=int(lthr * 0.87) + 1,
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max_value=int(lthr * 0.93),
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color='yellow',
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description='Tempo, 88-93% LTHR'
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),
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'Z4': ZoneDefinition(
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name='Zone 4',
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min_value=int(lthr * 0.93) + 1,
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max_value=int(lthr * 0.99),
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color='orange',
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description='Threshold, 94-99% LTHR'
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),
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'Z5': ZoneDefinition(
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name='Zone 5',
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min_value=int(lthr * 0.99) + 1,
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max_value=300,
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color='red',
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description='VO2 Max, >99% LTHR'
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)
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}
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@staticmethod
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def calculate_zone_distribution(values: List[float], zones: Dict[str, ZoneDefinition]) -> Dict[str, float]:
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"""Calculate time spent in each zone.
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Args:
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values: List of values (power, heart rate, etc.)
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zones: Zone definitions
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Returns:
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Dictionary with percentage time in each zone
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"""
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if not values:
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return {zone_name: 0.0 for zone_name in zones.keys()}
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zone_counts = {zone_name: 0 for zone_name in zones.keys()}
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for value in values:
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for zone_name, zone_def in zones.items():
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if zone_def.min_value <= value <= zone_def.max_value:
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zone_counts[zone_name] += 1
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break
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total_count = len(values)
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return {
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zone_name: (count / total_count) * 100
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for zone_name, count in zone_counts.items()
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}
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@staticmethod
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def get_zone_for_value(value: float, zones: Dict[str, ZoneDefinition]) -> str:
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"""Get the zone name for a given value.
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Args:
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value: The value to check
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zones: Zone definitions
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Returns:
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Zone name or 'Unknown' if not found
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"""
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for zone_name, zone_def in zones.items():
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if zone_def.min_value <= value <= zone_def.max_value:
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return zone_name
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return 'Unknown'
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@staticmethod
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def get_cadence_zones() -> Dict[str, ZoneDefinition]:
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"""Get cadence zone definitions."""
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return {
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'Recovery': ZoneDefinition(
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name='Recovery',
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min_value=0,
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max_value=80,
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color='lightblue',
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description='Low cadence, recovery pace'
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),
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'Endurance': ZoneDefinition(
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name='Endurance',
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min_value=80,
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max_value=90,
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color='green',
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description='Comfortable cadence, sustainable'
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),
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'Tempo': ZoneDefinition(
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name='Tempo',
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min_value=90,
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max_value=100,
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color='yellow',
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description='Moderate cadence, tempo effort'
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),
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'Threshold': ZoneDefinition(
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name='Threshold',
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min_value=100,
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max_value=110,
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color='orange',
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description='High cadence, threshold effort'
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),
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'Sprint': ZoneDefinition(
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name='Sprint',
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min_value=110,
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max_value=200,
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color='red',
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description='Maximum cadence, sprint effort'
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)
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}
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