Related Experiment Video
Updated: Jul 23, 2025

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Inviting Newton to Visit the Delivery Room. The Role of Gravity During Childbirth
Michael Stark1, Ospan Mynbaev1, Antonio Malvasi1,2
1The New European Surgical Academy, Berlin, Germany.
Throughout history, the upright position was the norm for most deliveries. However, due to cultural reasons, this practice was changed in the 17th century, and since then, the majority of deliveries have been conducted with the parturient lying on her back. The aim of this review article is to challenge the nowadays recumbent birth position and to emphasize the added value of gravity to the childbirth. Physiologically there is a strong argument for delivering in an upright position due to the significant role of gravity. The baby's presenting part does not move back between contractions as happens in today's recumbent position when due to the anatomy of the pelvis, the presenting part moves uphill. In this position, the second stage is shorter, and the signal for active pushing occurs spontaneously. It is recommended that any parturient should be informed about the risks and benefits of each birthing option to decide the birthing position that suits her.
Throughout history, the upright position was the norm for most deliveries. However, due to cultural reasons, this practice was changed in the 17th century, and since then, the majority of deliveries have been conducted with the parturient lying on her back. The aim of this review article is to challenge the nowadays recumbent birth position and to emphasize the added value of gravity to the childbirth. Physiologically there is a strong argument for delivering in an upright position due to the significant role of gravity. The baby's presenting part does not move back between contractions as happens in today's recumbent position when due to the anatomy of the pelvis, the presenting part moves uphill. In this position, the second stage is shorter, and the signal for active pushing occurs spontaneously. It is recommended that any parturient should be informed about the risks and benefits of each birthing option to decide the birthing position that suits her.
Related Concept Videos
Work Done by Gravity
Like other forces, gravity does work on an object if it displaces it toward the Earth's center. In this case, the work done by gravity is said to be positive. If an external force acts on the object against the pull of gravity and manages to lift it away from the Earth's center, work is done against gravity. In this case, the net work done is said to be...
Newton's Law of Gravitational Attraction
Newton's law of gravitational attraction is a fundamental law of physics that governs the attraction between objects. It states that the magnitude of the gravitational force between any two objects is proportional to their masses and inversely...
Measuring Acceleration Due to Gravity
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
Newton's Law of Gravitation
Gravitation
Center of Gravity

