Oxymax HRequest InformationRequest Support
Oxymax-H is Columbus Instruments' non-clinical metabolic monitoring system. The instrument employs the same analytical grade gas sensors employed in the entire Oxymax line. Measurements are made by affixing a mask or canopy to the subject through which a continuous flow of air is drawn. The rate is selected so as to collect all expired gases from the subject. The flow is accurately metered by a precise controller that measures the exact mass of air being transported. A small sample is drawn from the effluent flow, dried, and presented to an electrochemical Oxygen sensor (paramagnetic and zirconia sensors also available) and a single beam non-dispersive Carbon Dioxide sensor. The resulting values are processed by the Oxymax H controlling software for presentation of Oxygen consumption, carbon dioxide production, respiratory exchange ratio, and heat.
Oxymax H may also be employed in situations where the use of a mask may not be suitable; it works equally well with a tent or canopy.
Equations for Energy Expenditure
Features / Specifications
Oxygen Sensor Range: 19.0% to 21.25%
Oxygen Sensor Accuracy: 1% of reading, ± 1 digit
Carbon Dioxide Sensor Range: 0% to 1.0%
Carbon Dioxide Sensor Accuracy: 1% of reading, ± 1 digit
Flow Meter Range: 45-450 Liters per Minute
Flow Meter Accuracy: 1% of reading, ± 1 digit
Contact Columbus Instruments
Click on any of the following titles to search for the document in a new window using Google Scholar.
Activity promoting games and increased energy expenditure
Some of these references may be difficult to locate using Google Scholar. If you are having trouble finding the correct reference paper, try searching for it on PubMed: http://www.ncbi.nlm.nih.gov/PubMed
Lorraine Lanningham-Foster, Ph.D., Randal C. Foster, B.S., Shelly K. McCrady, M.S., Teresa B. Jensen, M.D., Naim Mitre, M.D., and James A. Levine
J Pediatr. 2009 June; 154(6): 819-823.
A Stand-Alone Accelerometer System for Free-Living Individuals to Measure and Promote Physical Activity
Chinmay U. Manohar, MS, Gabriel A. Koepp, MHA, Shelly K. McCrady-Spitzer, MS, James A. Levine, MD, PhD
ICAN: Infant, Child, & Adolescent Nutrition August 2012 vol. 4 no. 4 222-229
Non-exercise Physical Activity in Agricultural and Urban People
James A. Levine, Shelly K. McCrady, Sandra Boyne, Joanne Smith, Kathryn Cargill, Terrence Forrester
Urban Stud November 15, 2010
Laboratory Measurement of Posture Allocation and Physical Activity in Children.
LANNINGHAM-FOSTER, LORRAINE M.; JENSEN, TERESA B.; MCCRADY, SHELLY K.; NYSSE, LANA J.; FOSTER, RANDAL C.; LEVINE, JAMES A.
Medicine & Science in Sports & Exercise. 37(10):1800-1805, October 2005
An office-place stepping device to promote workplace physical activity.
McAlpine, David A; Manohar, Chinmay U; McCrady, Shelly K; Hensrud, Donald; Levine, James A
British Journal of Sports Medicine. 41(12):903-907, December 2007
The energy expenditure of using a "walk-and-work" desk for office workers with obesity.
Levine, James A; Miller, Jennifer M
British Journal of Sports Medicine. 41(9):558-561, September 2007.
Nonexercise movement in elderly compared with young people
Ann M. Harris, Lorraine M. Lanningham-Foster, Shelly K. McCrady, and James A. Levine
Am J Physiol Endocrinol Metab 292: E1207-E1212, 2007
Pedometer Accuracy for Children: Can We Recommend Them for Our Obese Population?
Naim Mitre, MDa,b
, Lorraine Lanningham-Foster, PhDb
, Randal Foster, MSb
and James A. Levine, MD, PhDb
PEDIATRICS Vol. 123 No. 1 January 2009, pp. e127-e131
The energy expenditure of an activity-promoting video game compared to sedentary video games and TV watching
Mitre, Naim,Foster, Randal, Lanningham-Foster, Lorraine,Levine, James A.
Journal of Pediatric Endocrinology and Metabolism. Volume 24, Issue 9-10, Pages 689-695
Endurance Capacity, Not Body Size, Determines Physical Activity Levels: Role of Skeletal Muscle PEPCK
Colleen M. Novak1*, Carlos Escande2
, Susan M. Gerber1
, Eduardo N. Chini2
, Minzhi Zhang1
, Steven L. Britton3
, Lauren G. Koch3
, James A. Levine1
PLoS ONE 4(6): e5869 - e5869, June 2009