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AMIS SPORT FOR ATHLETIC VO2 PERFORMANCE TESTING

Why AMIS Sport?

  • Extremely accurate system – used by Elite Test Centers around the world – as good as the gold standard Douglas bag method (CV of differences: 2.4%) [Ref. 1]
  • Low inspiratory and expiratory flow resistance [Ref. 2]
  • Minimal dead space
  • Ultra-lightweight tubes
  • Laser diode oxygen sensor – no limited life-time parts
  • Suitable across all disciplines (running, cycling, rowing, skiing)

Why is AMIS Sport technology accurate?

  • It uses a mixed expired gas method, which is not critical with respect to correction for flow-gas delay.
  • Flow is measured on the inspiratory side, which is not affected by humidity or saliva.

 

TECHNOLOGY

AMIS Sport is developed specifically for VO2 max and submax tests in the Elite Sports segment where conventional CPX systems based on the Breath-by-Breath method are inadequate due to low accuracy and repeatability.

AMIS Sport is the successor of AMIS 2001 and upgraded with a more compact analyser unit. It uses inspiratory flow measurements and mixed expiratory gas analysis from a dynamic mixing bag with no significant difference in VO2 (CV of differences: 2.4%) between the system and the gold standard Douglas bag method [Ref. 1]. This principle is more precise than what can be obtained using the Breath‑by-Breath method which requires extremely fast gas analyser response and compensation for flow-gas delay.

The athlete breathes through a low dead space two-way valve and an ultra-lightweight low resistance breathing circuit which interferes minimally with the respiration even at max. exercise intensity [Ref. 2].

With the flowmeter positioned in the inspiratory tubing, problems caused by saliva and condensation are avoided.

The system uses fast laser diode absorption spectroscopy O2 and NDIR CO2 sensors with high reliability and no limited life parts.

The system software is controlled by touch screen and runs under Windows 10. It supports Polar pulse belts via Bluetooth for accurate heart rate measurement and can control the most common exercise devices (ergometers and treadmills).

 

 

 

 

PRODUCT

AMIS Sport is very easy to use and the operator needs to be trained only 1 – 2 hours by one of our specialists. It requires very few calibration procedures.

AMIS Sport analyser
Mixing bag and inspiratory flowmeter
Two-way breathing valve with mouth piece
Complete setup
Cycling with mask
Running with mask

Video: running on treadmill

Video: Cycling

Parameters:

VO2. . . . . . . . Oxygen uptake
VCO2 . . . . . . Carbon dioxide production
RER . . . . . . . . Respiratory exchange ratio
VE . . . . . . . . . Expiratory minute ventilation
VT . . . . . . . . . Tidal volume
RR . . . . . . . . . Respiratory rate
HR . . . . . . . . . Heart rate
and derived parameters

Technical Specifications:

Oxygen sensor
Principle. . . . . . . . . . . . . . . . . . . . . . Long life laser diode absorption spectroscopy
Range. . . . . . . . . . . . . . . . . . . . . . . . 5-100%
CO2 sensor
Principle. . . . . . . . . . . . . . . . . . . . . . Non-Dispersive Infrared
Range. . . . . . . . . . . . . . . . . . . . . . . . 0-10%
Flowmeter
Principle. . . . . . . . . . . . . . . . . . . . . . Differential pressure, with auto-zeroing valve
Range (peak flow) . . . . . . . . . . . . ± 900 l/min
Flow resistance. . . . . . . . . . . . . . . < 1.5 cm H2O/(l/s) up to a flow rate of 14 l/s
Pulse rate
Wireless receiver. . . . . . . . . . . . . Bluetooth on computer
Polar belt. . . . . . . . . . . . . . . . . . . . . H7 transmitter
Range. . . . . . . . . . . . . . . . . . . . . . . . . >10 m
Dead space
System dead space. . . . . . . . . . . 63 ml
Environmental (detected by integrated ambient sensors)
Temperature (max. internal). . . 5 – 40 °C
Pressure. . . . . . . . . . . . . . . . . . . . . . . 700 – 1150 mbar (525-900 mmHg)
Humidity . . . . . . . . . . . . . . . . . . . . . 0 – 95 % RH, non-condensing
Mechanical
Size . . . . . . . . . . . . . . . . . . . . . . . . . . < 35 x 20 x 7 cm
Weight. . . . . . . . . . . . . . . . . . . . . . . < 2 kg
Electrical
Voltage. . . . . . . . . . . . . . . . . . . . . . . 100-240 VAC, 50-60 Hz
Typical/Max current. . . . . . . . . . . 30 W max. (12 VDC 1.5A typical)
Protection . . . . . . . . . . . . . . . . . . . . IEC 61010-1

Product data sheet

 

 

SCIENTIFIC LITERATURE

VALIDATION PUBLICATIONS
RELATING TO AMIS SPORT/AMIS 2001 TECHNOLOGY

A metabolic cart for measurement of oxygen uptake during human exercise using inspiratory flow rate.
Jensen K, Jørgensen S, Johansen L
Eur J Appl Physiol. 2002 Jul;87(3):202-6. Epub 2002 Apr 26.

Breathing resistance in automated metabolic systems is high in comparison with the Douglas Bag method and previous recommendations
Mats Ainegren, Kurt Jensen, Hans Rosdahl
Proc IMechE Part P: J Sports Engineering and Technology 1–9, 2018, Volume 232, Issue 2, Pages 122-130.

SELECTED APPLICATIONS
FOR AMIS SPORT / AMIS2001 TECHNOLOGY

A Comparison between Different Methods of Estimating Anaerobic Energy Production.
Erik P. Andersson, Kerry McGawley
Front. Physiol., 08 February 2018

No superior adaptations to carbohydrate periodization in elite endurance athletes.
Gejl KD, Thams LB, Hansen M, Rokkedal-Lausch T, Plomgaard P, Nybo L, Larsen FJ, Cardinale DA, Jensen K, Holmberg HC, Vissing K, Ørtenblad N.
Med Sci Sports Exerc. 2017 Dec;49(12):2486-2497. doi: 10.1249/MSS.0000000000001377.

The Reliability and Validity of a Four-Minute Running Time-Trial in Assessing V˙O2max and Performance.
Kerry McGawley
Front Physiol. 2017; 8: 270.

The effects of prior high intensity double poling on subsequent diagonal stride skiing characteristics.
Björklund G, Holmberg HC, Stöggl T.
Springerplus. 2015 Feb 1;4:40. doi: 10.1186/s40064-015-0796-y. eCollection 2015.

Physiological Capacity and Physical Testing in Male Elite Team Handball.
Lars Bojsen Michalsik, Klavs Madsen, Per Aagaard
J Sports Med Phys Fitness. 2015 May;55(5):415-29. Epub 2014 Jan 9.

Physiological Comparison of Concentric and Eccentric Arm Cycling in Males and Females.
Beaven CM, Willis SJ, Cook CJ, Holmberg HC.
PLoS One. 2014; 9(11): e112079.

Aerobic and Anaerobic Contributions to Energy Production Among Junior Male and Female Cross-Country Skiers During Diagonal Skiing.
McGawley K, Holmberg HC.
Int J Sports Physiol Perform. 2014 Jan;9(1):32-40. doi: 10.1123/ijspp.2013-0239. Epub 2013 Sep 30.

Effects of resistance training on endurance capacity and muscle fiber composition in young top-level cyclists.
Aagaard P, Andersen JL, Bennekou M, Larsson B, Olesen JL, Crameri R, Magnusson SP, Kjaer M.
Scand J Med Sci Sports. 2011 Dec;21(6):e298-307. doi: 10.1111/j.1600-0838.2010.01283.x. Epub 2011 Mar 1.

Reversed drift in heart rate but increased oxygen uptake at fixed work rate during 24 h ultra‐endurance exercise.
C. M. Mattsson, J. K. Enqvist, T. Brink‐Elfegoun, P. H. Johansson, L. Bakkman, B. Ekblom
Scand J Med Sci Sports. 2010 Apr;20(2):298-304. doi: 10.1111/j.1600-0838.2009.00878.x. Epub 2009 Mar 29.

Dietary nitrate reduces maximal oxygen consumption while maintaining work performance in maximal exercise.
Larsen FJ, Weitzberg E, Lundberg JO, Ekblom B.
Free Radic Biol Med. 2010 Jan 15;48(2):342-7. doi: 10.1016/j.freeradbiomed.2009.11.006. Epub 2009 Nov 12.

Interleukin-6 in human plasma during ultra endurance exercise.
Linnea Wallberg
Stockholm University, 2009-05

Lung function, arterial saturation and oxygen uptake in elite cross country skiers: influence of exercise mode.
H.-C- Holmberg, H. Rosdahl, J. Svedenhag
Scand J Med Sci Sports. 2007 Aug;17(4):437-44. Epub 2006 Oct 13.

Dietary Nitrate and Oxygen Cost During Exercise.
Larsen FJ, Weitzberg E, Lundberg JO, Ekblom B.
Acta Physiol (Oxf). 2007 Sep;191(1):59-66. Epub 2007 Jul 17.

Maximal oxygen uptake is not limited by a central nervous system governor.
T. Brink-Elfegoun, L. Kaijser, T. Gustafsson, and B. Ekblom
01 Feb 2007https://doi.org/10.1152/japplphysiol.00566.2006

Biomechanical & physiological characterisation of four cycling positions.
Alan Swanton, Amir Shafat, Ross Anderson
24 International Symposium on Biomechanics in Sports (2006)

Why do arms extract less oxygen than legs during exercise?
J.A.L. Calbet, H.-C. Holmberg, H. Rosdahl, G. Van Hall, M. Jensen-Urstad, B. Saltin
Am J Physiol Regul Integr Comp Physiol 289: R1448–R1458, 2005.

Maximal muscular vascular conductances during whole body upright exercise in humans.
J.A.L. Calbet, M. Jensen-Urstad, G. Van Hall, H.-C. Holmberg, H. Rosdahl, B. Saltin
J Physiol. 2004 Jul 1;558(Pt 1):319-31. Epub 2004 Apr 30.

Estimation of VO2max from the ration between HRmax and HRrest – the Heart Rate Method.
Niels Uth, Henrik Sørensen, Kristian Overgaard, Preben K. Pedersen
Eur J Appl Physiol. 2004 Jan;91(1):111-5. Epub 2003 Nov 18.

Incidence of Injury and Physical Performance Adaptations During Military Training.
Rosendal L, Langberg H, Skov-Jensen A, Kjaer M.
Clin J Sport Med. 2003 May;13(3):157-63.

No Evidence of Insulin-Like Growth Factor-Binding Protein 3 Proteolysis during a Maximal Exercise Test in Elite Athletes.
Dall R, Lange KH, Kjaer M, Jørgensen JO, Christiansen JS, Orskov H, Flyvbjerg A.
J Clin Endocrinol Metab. 2001 Feb;86(2):669-74.

 

References

Among our users in the Nordic region are:

The system is also used in several sports performance test labs across Scandinavia:

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ABOUT

AMIS Sport is a product from Innovision ApS, Denmark, who has more than 25 years of experience in developing medical equipment using advanced gas exchange methods. AMIS Sport is the successor of the AMIS 2001 using the same method, but a more compact analyser.

Innovision ApS
Skovvænget 2

DK-5620 Glamsbjerg
Denmark
+4565959100
info@innovision.dk