Heart rate and oxygen consumption relationship changes following intense training

Richardson, R. S.; Johnson, Stephen C.; Walker, James A.

doi:10.1080/15438629209517007

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…For each bout, exercise work rate (WR) was increased from 25 to 50 to 75 and then to 90 and 100% of normoxic (N) maximum WR (WRmAx) with data obtained at each level. After a-2-3-min period at each work rate, sufficient to attain constant pulmonary oxygen uptake (Vo2) (7), the sequence of events at each work rate was as follows: (a) 3-ml blood samples were taken, and (b) femoral vein blood flow was measured. Duplicate measurements of all variables were then taken without delay, to keep total exercise time to a minimum.…”

Section: Methodsmentioning

confidence: 99%

Myoglobin O2 desaturation during exercise. Evidence of limited O2 transport.

Richardson¹,

Noyszewski²,

Kendrick³

et al. 1995

J. Clin. Invest.

550

527

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Section: Methodsmentioning

confidence: 99%

Myoglobin O2 desaturation during exercise. Evidence of limited O2 transport.

Richardson¹,

Noyszewski²,

Kendrick³

et al. 1995

J. Clin. Invest.

550

527

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Red Blood Cell Transit Time in Man: Theoretical Effects of Capillary Density

Richardson

Poole

Knight

et al. 1994

Advances in Experimental Medicine and Biology

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The effect of aerodynamic handlebars on oxygen consumption while cycling at a constant speed

Richardson

Johnson

1994

Ergonomics

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In this study, the oxygen consumption (VO2) of bicycling was measured at a fixed speed (40 km.h-1), on level terrain, with normal and aerodynamic handlebars using a Douglas bag collection system. Eleven elite (USCF category 1 or 2) men cyclists age 24 to 40 years (mean = 28.5, SD +/- 4.6) performed four consecutive (two with each bar in alternating order) steady state rides at 40 km.h-1 over a 4 km flat course (same direction each trial). Expired gases were collected in a 1501 Douglas bag attached to a following vehicle during the last 45 s (approx. 0.5 km) of each trial. A repeated measures analysis of variance revealed a significant (p < 0.02) handlebar effect. Specifically, VO2 was 2% lower under the aerodynamic handlebar treatment (mean = 4.26, SD +/- 0.36 l.min-1) when compared with that of the normal handlebar treatment (mean = 4.34, SD +/- 0.35 l.min-1). The results of this study demonstrate that the reported aerodynamic advantage of the aerodynamic handlebars produces a small but significant reduction in the VO2 of bicycling at 40 km.h-1.

show abstract

Heart rate and oxygen consumption relationship changes following intense training

Cited by 4 publications

References 23 publications

Myoglobin O2 desaturation during exercise. Evidence of limited O2 transport.

Myoglobin O2 desaturation during exercise. Evidence of limited O2 transport.

Red Blood Cell Transit Time in Man: Theoretical Effects of Capillary Density

The effect of aerodynamic handlebars on oxygen consumption while cycling at a constant speed

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