Related Experiment Video
Updated: Feb 9, 2026
14:25
Determining 3D Flow Fields via Multi-camera Light Field Imaging
Published on: March 6, 2013
17.2K
Reliability and validity of depth camera 3D scanning to determine thigh volume
Mehdi Kordi1,2, Nicos Haralabidis3, Matthew Huby4
1a British Cycling, National Cycling Centre , Manchester , UK.
Journal of Sports Sciences
|June 1, 2018
Summary
Depth camera 3D imaging offers a reliable and cost-effective method for measuring thigh volume. This technology shows good agreement with MRI, providing a faster alternative for assessing this key sports performance and health metric.
Area of Science:
- Biomedical Engineering
- Sports Science
- Anthropometry
Background:
- Gross thigh volume is crucial for predicting sport performance and health.
- Current measurement methods like the frustum method have high error rates.
- Medical imaging (MRI) is accurate but expensive and time-consuming.
Purpose of the Study:
- To establish the between-session reliability of depth camera 3D-imaging systems for thigh volume measurement.
- To examine the agreement between depth camera 3D-imaging and MRI for thigh volume measurement.
Main Methods:
- Forty-eight male cyclists had thigh volume measured twice using a depth camera system.
- A subset of 32 participants underwent lower body MRI scans.
- Between-session reliability and agreement with MRI were analyzed.
Main Results:
- Depth camera measurements showed low between-session variability (CV = 1.7%).
- The system exhibited good agreement with MRI, with a systematic difference of 32.6 cm³.
- The depth camera provides a reliable and comparable measurement to MRI.
Conclusions:
- Depth camera 3D-imaging systems are reliable for measuring gross thigh volume.
- These systems offer a cost-effective and time-saving alternative to MRI.
- This technology can be valuable for sports performance and health assessments.
More Related Videos
Related Concept Videos
01:29Reliability and Validity
14.1K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
14.1K
01:20Muscles that Move the Thigh
2.9K
The thigh's motion is primarily governed by muscles originating in the pelvic girdle and inserted into the femur. One crucial muscle, the iliopsoas, is a combination of the psoas major and the iliacus muscles, sharing a common insertion point on the lesser trochanter of the femur.
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar...
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar...
2.9K
02:28Leaky Scanning
5.7K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.7K
01:27Uniform Depth Channel Flow
610
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
610
01:25Distribution Reliability and Automation
519
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
519
02:41Constant Volume Calorimetry
30.8K
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
30.8K