Emerging Technologies for Nutrition Research Potential for Assessing Military Performance Capability (1997) / Chapter Skim
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Pages 297-314
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Emerging Technologies for Nutrition Research, 1997 Pp.
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heart-rate recording (Spurr et al., 1988) , pedometers and accelerometers (Kashiwazaki et al., 1986; Montoye, et al., 1983)
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and integration of ventilation and gas concentrations and, thus, the calculation of oxygen uptake. TEEM 100 Specifications The TEEM 100 is the newest of the portable systems and has been available commercially for approximately 4 years (TEEM 100 Operator's Manual, 1993)
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TABLE 13-2 COSMED K2 Specifications Weight: 0.85 kg (transmitter + battery pack) VE: Turbine flowmeter in facemask (range: 2 to > 300 liters· min-1)
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VO2 = VE × F1O2 -FeO2) , (Equation 13-1)
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TABLE 13-3 Average Values of Minute Ventilation (liters · min-1, BTPS) Intensity COSMED1 COSMED2 DB Stage 2 79 ± 19 79 ± 19 78 ± 19 Stage 4 99 ± 24 98 ± 26 97 ± 25 Stage 6 121 ± 33 119 ± 32 122 ± 33 Maximal 151 ± 35 151 ± 32 159 ± 40 NOTE: BTPS, body temperature and pressure, saturated gas; DB, Douglas bag.
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Mean values of VO2 among systems showed significant differences only at Stage 6 of the submaximal exercise test (Table 13-5)
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TABLE 13-6 Oxylog Specifications Weight: < 2 kg VI: Turbine flowmeter in facemask (range: 2–150 liters · min-1) FIO2 and FeO2: Figaro fuel cell (range: 0–25%)
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highest intensity (4.9% lower for Oxylog) , while Oxylog values for VO2 were 4.4 percent lower (p < 0.01)
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TABLE 13-8 Oxygen uptake, liters · min-1 (mean ± SE) Grade (%)
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carriage, lifting, lift and carry, and obstacle course navigation) in chemical protective clothing.
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References Ballal, M.A., and I.A. MacDonald 1982 An evaluation of the Oxylog as a portable device with which to measure oxygen consumption.
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Oxylog Operator's Manual 1994 Operator's Manual. Oxylog 2.
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JOHN PATTON: Advantage between them?
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JOHN PATTON: Yes, and barometric pressure. That is all you are going to need.
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DOUGLAS WILMORE: So thermal loads and things [affect the results]
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apply it to the equation for oxygen uptake, there is going to be little change, little effect on oxygen uptake per se. I mean with just the masked condition itself, you tend to hypoventilate a little bit, but you extract more oxygen, so when you make the calculation for oxygen uptake there is little change.
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