Related Experiment Video
Updated: Jan 30, 2026
05:54
Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats
Published on: April 4, 2019
11.4K
Can green space quantity and quality help prevent postpartum weight gain? A longitudinal study.
Xiaoqi Feng1,2,3, Thomas Astell-Burt1,2,3,4
1Population Wellbeing and Environment Research Lab (PowerLab), Faculty of Social Sciences, School of Health and Society, University of Wollongong, Wollongong, New South Wales, Australia.
Journal of Epidemiology and Community Health
|January 25, 2019
Summary
Increased green space may help reduce postpartum weight gain. Areas with 21-40% green space showed the lowest body mass index (BMI) in mothers, especially if local parks were perceived as high quality.
Area of Science:
- Environmental Health
- Public Health
- Epidemiology
Background:
- Postpartum weight gain is a significant concern for many mothers.
- The impact of green space quantity and quality on postpartum weight has not been previously studied.
Purpose of the Study:
- To investigate the association between residential green space and body mass index (BMI) in mothers post-childbirth.
- To explore the influence of both the amount and perceived quality of green space on maternal BMI over time.
Main Methods:
- A longitudinal study followed 3843 Australian mothers for 15 years postpartum.
- Multilevel growth curve models were used to analyze body mass index (BMI) in relation to green space metrics.
- Green space quantity was measured by land use percentage, and quality by self-report.
Main Results:
- Mothers in areas with 21%-40% green space exhibited the lowest adjusted BMI.
- No independent association was found between BMI and green space quality alone.
- Significantly lower BMI in the greenest areas (≥41%) was observed only when local parks were perceived as high quality.
Conclusions:
- Urban greening strategies targeting at least 21% green space may aid in mitigating postpartum weight gain.
- While green space can help reduce postpartum weight gain, it may not entirely prevent it.
- Further research is warranted to explore the underlying mechanisms connecting green space and maternal weight management.
Related Concept Videos
01:26Longitudinal Studies
524
Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
524
02:20Longitudinal Research
13.3K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.3K
01:14Base Quantities and Derived Quantities
26.1K
In any system of units, the units for some physical quantities must be specified through a measurement process. These measurements are the base quantities of the system, and their units are the base units of the system. The algebraic combinations of the base values can then be used to express all other physical quantities. Each of these physical quantities is then referred to as a derived quantity, with each unit being referred to as a derived unit.
The International Organization for...
The International Organization for...
26.1K
01:15Gain
410
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
410
00:57Weighted Mean
6.3K
While taking the arithmetic, geometric, or harmonic mean of a sample data set, equal importance is assigned to all the data points. However, all the values may not always be equally important in some data sets. An intrinsic bias might make it more important to give more weightage to specific values over others.
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
6.3K
01:05Estimation of the Physical Quantities
7.6K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
7.6K