From the community
News
Announcements from the community, alongside the latest posts from the muscleNIRS.com blog.
- muscleNIRS.com
mNIRS 2026 conference review – this time by someone who was there!
As promised here is a guest blog by my colleague Chris McManus. Chris went to Pavia and gave an invited lecture describing his new software for measuring…
- Tools
MCMITO 1.3.0 now available
Version 1.3.0 adds the Beever et al. (2020) blood flow correction, a best-fit slope window and a redesigned marker panel. Users on 1.1.0 or 1.2.0 can update from within the app.
- muscleNIRS.com
mNIRS 2026 initial thoughts and my new favourite mNIRS experiment!
I couldn’t make it to Pavia unfortunately. For a look at what you and I missed click here . Fortunately for us all, we will be updating the blog with highlights over…
- Tools
New tool added: MCMITO
A free Windows application that imports raw repeated occlusion NIRS recordings and delivers resting mV̇O₂, the rate constant and the time constant within minutes, created by Chris McManus at the University of Essex. Now listed on the Tools page.
- Tools
New tool added: {mnirs} app
A browser based app and open source R package by Jem Arnold for reading, processing and analysing muscle NIRS data from Moxy, Artinis, PIONIRS, Train.Red and other devices. Now listed on the Tools page.
- Conference
mNIRS 2026 opens in Pavia
The second international muscle NIRS meeting runs from 17 to 19 September at the University of Pavia, with three days of science, sponsor demonstrations and applied discussion.
- Site
mnirs.org has a new look
The site has been redesigned ahead of Pavia. The conference archive, video library and partner list are all still here.
- muscleNIRS.com
Welcome to MuscleNIRS
Muscle near infrared spectroscopy (mNIRS) has developed enormously since Frans Jöbsis first demonstrated in 1977 that near infrared light could be used to monitor…
- muscleNIRS.com
Measuring oxygen saturation using other Multi-Distance Methods
Methods other than SRS use multiple source–detector distances to estimate StO₂. While the methods vary, a shared principle is that shorter distances sample more…
- muscleNIRS.com
Measuring oxygen saturation using Spatially Resolved Spectroscopy (SRS)
There are methods for measuring absolute muscle tissue oxygen saturation (StO₂) that do not require expensive time-domain or frequency-domain systems. One such…
- muscleNIRS.com
Measuring oxygen saturation by physiological calibration
This simple approach can be applied to almost any mNIRS system. The principle is to expose the muscle to physiological conditions that produce a minimum and maximum…
- muscleNIRS.com
Measuring absolute heme concentrations
Whilst all mNIRS devices can in principle measure changes in oxy and deoxy heme concentrations, more expensive equipment is needed to measure absolute…
- muscleNIRS.com
Measuring changes in heme concentration
Early mNIRS measurements were reported in “arbitrary units” or used a “physiological calibration” (see later method). David Delpy and colleagues, together with…
- muscleNIRS.com
The first mNIRS
Near infrared light (700–1,000 nm) can penetrate tissue because of the relatively low absorbance of biological chromophores in this wavelength range. However, those…
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