Cuestionario vinculado a una guía · duro Nivel

Cómo comprobar su forma de ejercicio con AI Quiz

Prueba cómo la estimación de pose encuentra puntos clave del cuerpo, por qué un ángulo de cámara oculta algunos errores y cuándo un entrenador calificado supera a una aplicación.

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Pregunta 1 de 8

What does a pose estimation model output for each video frame?

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  1. What does a pose estimation model output for each video frame?
    • A 3D scan of the whole body surface
    • Coordinates for body landmarks called keypoints
    • A heart-rate reading
    • The weight on the bar
  2. How many landmarks does Google's MediaPipe Pose track, according to the guide?
    • 33
    • 17
    • 12
    • 68
  3. Why might an app filming from the side miss knees caving inward?
    • Knee caving only shows up in slow motion
    • Side views hide the hips
    • Inward knee movement runs toward or away from a side camera, which a flat image shows poorly
    • Apps do not track knees
  4. Which problem does the guide say is mostly invisible to a single-camera app?
    • Whether you did 8 or 10 reps
    • Whether your hips went below your knees from the side
    • Your tempo
    • Bracing, breathing and pressure through the feet
  5. Why does the guide say 'good form' from an app does not guarantee safety?
    • The thresholds are generic and ignore differences like thigh length, ankle mobility and injury history
    • Apps always score everyone as good
    • Form does not matter for safety
    • Apps only work for push-ups
  6. How is a knee angle calculated from keypoints?
    • By measuring the length of the shin only
    • From the hip, knee and ankle keypoints, using the angle between the vectors from the knee
    • By counting the frames in one rep
    • From the heatmap's brightest color
  7. Why do rep counters typically use two different angle thresholds?
    • To measure the weight lifted
    • To tell squats from lunges
    • To stop small wobbles from counting as extra reps
    • To save battery
  8. Which situation does the guide say calls for a coach rather than relying on the app?
    • Counting push-ups at home
    • Checking tempo on bodyweight squats
    • Filming from a second angle
    • Feeling pain, learning heavy barbell lifts, rehab, or stalled progress