Related Experiment Video

Updated: Feb 11, 2026

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption
08:45

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

Published on: June 20, 2025

598

Psychometric Properties of Eight-Item Physical Activity Enjoyment Scale in a Chinese Population

Pak-Kwong Chung, Ka-Man Leung

    Journal of Aging and Physical Activity
    |May 4, 2018
    PubMed

    Keywords:
    exercisemeasurementolder adults

    More Related Videos

    Culture and Assay of Large-Scale Mixed-Stage Caenorhabditis elegans Populations08:51

    Culture and Assay of Large-Scale Mixed-Stage Caenorhabditis elegans Populations

    Published on: May 5, 2021

    5.7K
    Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity05:59

    Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

    Published on: March 7, 2019

    7.3K

    Related Concept Videos

    Physical and Chemical Properties of Matter02:57

    Physical and Chemical Properties of Matter

    The characteristics that enable us to distinguish one substance from another are called properties.
    167.1K
    Physical Properties of Amines01:26

    Physical Properties of Amines

    Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
    4.2K
    Physical Properties Affecting Solubility02:19

    Physical Properties Affecting Solubility

    Solutions of Gases in Liquids
    As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
    27.1K
    Physical Properties of Alkanes02:33

    Physical Properties of Alkanes

    Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is minimal, and hence alkanes have a zero dipole moment. This leads to the presence of only dispersion forces between the molecules. The strength of dispersion forces is dependent on the surface area of the molecules on which they act. Since the surface area increases with the molecular length for straight-chain alkanes, the dispersion forces also...
    14.9K
    Physical Properties of Ethers02:17

    Physical Properties of Ethers

    Overview
    An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
    Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
    8.5K
    Urine: Physical and Chemical Properties01:18

    Urine: Physical and Chemical Properties

    Urine comprises approximately 95% water and 5% solutes. The primary ingredient, apart from water, is urea - a byproduct of the breakdown of amino acids. Other notable components include uric acid, a residue from nucleic acid metabolism, and creatinine, a metabolite from creatine phosphate breakdown in skeletal muscle tissue.
    The concentration of these solutes varies, with urea being the most abundant nitrogenous waste product. Other solutes include sodium, chloride, potassium, phosphate,...
    4.0K