/**
* Inverse calculation
*
* Calculation is done for HR in [bpm] and time is transformed from [s] to [min].
*
* @param int $bpm [bpm]
* @param int $trimp value to reach
*/
protected function calculate($bpm, $trimp)
{
$Factor = new Factor($this->Athlete->gender());
$max = $this->Athlete->knowsMaximalHeartRate() ? $this->Athlete->maximalHR() : Calculator::DEFAULT_HR_MAX;
$rest = $this->Athlete->knowsRestingHeartRate() ? $this->Athlete->restingHR() : Calculator::DEFAULT_HR_REST;
$hr = max(0, ($bpm - $rest) / ($max - $rest));
$sum = $trimp / ($hr * exp($Factor->B() * $hr));
$this->value = 1 / $Factor->A() * $sum * 60;
}
/**
* Calculate
*
* Calculation is done for HR in [bpm] and time is transformed from [s] to [min].
*/
protected function calculate()
{
$Factor = new Factor($this->Athlete->gender());
$max = $this->Athlete->knowsMaximalHeartRate() ? $this->Athlete->maximalHR() : self::DEFAULT_HR_MAX;
$rest = $this->Athlete->knowsRestingHeartRate() ? $this->Athlete->restingHR() : self::DEFAULT_HR_REST;
$sum = 0;
$B = $Factor->B();
foreach ($this->Data as $bpm => $t) {
$hr = max(0, ($bpm - $rest) / ($max - $rest));
$sum += $t / 60 * $hr * exp($B * $hr);
}
$this->value = $Factor->A() * $sum;
}
public function testAllProperties()
{
$Gender = new Gender();
$Gender->set(Gender::MALE);
$Athlete = new Athlete($Gender, 210, 45, 70, 25, 60);
$this->assertTrue($Athlete->knowsGender());
$this->assertTrue($Athlete->knowsMaximalHeartRate());
$this->assertTrue($Athlete->knowsRestingHeartRate());
$this->assertTrue($Athlete->knowsAge());
$this->assertTrue($Athlete->knowsWeight());
$this->assertTrue($Athlete->knowsVDOT());
$this->assertEquals($Gender, $Athlete->gender());
$this->assertEquals(210, $Athlete->maximalHR());
$this->assertEquals(45, $Athlete->restingHR());
$this->assertEquals(70, $Athlete->weight());
$this->assertEquals(25, $Athlete->age());
$this->assertEquals(60, $Athlete->vdot());
}
/**
* Value in [%HRrest]
* @return int
*/
public function inHRrest()
{
return round(100 * ($this->value - $this->Athlete->restingHR()) / ($this->Athlete->maximalHR() - $this->Athlete->restingHR()));
}