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The influence of active and passive ...

Siegler, Jason C.

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The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise./
作者:	Siegler, Jason C.
面頁冊數:	69 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-09, Section: B, page: 4494.
Contained By:	Dissertation Abstracts International65-09B.
標題:	Health Sciences, Human Development. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3148067
ISBN:	0496071599

The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise.
Siegler, Jason C.

The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise. - 69 p.

Source: Dissertation Abstracts International, Volume: 65-09, Section: B, page: 4494.

Thesis (Ph.D.)--The University of New Mexico, 2004.

Recovery from short-term, high intensity bouts of exercise is often characterized by the continuous removal of waste products and byproducts of metabolism, and the restoration of endogenous substrates used during such exercise. For this exercise intensity, a majority of research has focused on the various metabolites or by products of glycolysis, or other limiting factors associated with fatigue (Linderman et al., 1992; Medbo et al., 2000; Stringer et al., 1992). However, little research has compared the recovery kinetics of these metabolites (i.e. blood lactate and pH). Of the existing research comparing metabolic recovery kinetics, none have compared them under various modes of recovery.

ISBN: 0496071599Subjects--Topical Terms:

1019218
Health Sciences, Human Development.

The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise.
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245 1 4 $a The influence of active and passive recovery on acid-base kinetics during multiple bouts of intense exercise.
300 $a 69 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-09, Section: B, page: 4494.
500 $a Chair: Robert Robergs.
502 $a Thesis (Ph.D.)--The University of New Mexico, 2004.
520 $a Recovery from short-term, high intensity bouts of exercise is often characterized by the continuous removal of waste products and byproducts of metabolism, and the restoration of endogenous substrates used during such exercise. For this exercise intensity, a majority of research has focused on the various metabolites or by products of glycolysis, or other limiting factors associated with fatigue (Linderman et al., 1992; Medbo et al., 2000; Stringer et al., 1992). However, little research has compared the recovery kinetics of these metabolites (i.e. blood lactate and pH). Of the existing research comparing metabolic recovery kinetics, none have compared them under various modes of recovery.
520 $a The purpose of this study was to assess the difference between blood acid-base balance under the influence of active or passive recovery during multiple bouts of intense exercise. The sample consisted of 10 volunteers (30 +/- 6.8yrs, 180.25 +/- 7.5cm, 76.3 +/- 9.7kg, 11.6 +/- 4.3%BF). Subjects first completed a standardized 5 minute warm-up on an upright cycle ergometer (Monarch 824). After the warm-up, the subjects performed 3 bouts of intense cycle exercise with a resistance and cadence of 80 to 90 rev/min equivalent to 110% workload at VO2max. Workloads were pre-determined using the maximal watt output from an initial VO2max test. The test was designed to fatigue the subjects in 2--3 minutes.
520 $a Immediately upon termination of the first exercise bout, the subjects were either seated (passive recovery) or asked to continue cycling (20%VO 2max) while post-exercise blood draws commenced. Blood samples (3 mL) were drawn every two minutes for 14 minutes. Once 15 minutes expired, the subjects repeated the exercise bout. Upon reaching volitional fatigue, the subjects repeated their recovery mode (passive or active). This procedure was repeated until a total of 3 exercise and recovery bouts had been completed. Blood acid-base (pH, HCO3-, and base excess (BE)) were analyzed using a clinical blood gas analyzer (Bayer Rapidlab 865, Pittsburgh, PA). Lactate was analyzed using enzymatic spectroscopy.
520 $a The severity of acidosis and the normalization of acid-base balance following intermittent, intense exercise to exhaustion was altered by mode of recovery. Compared to a passive recovery, blood acidosis was not as severe in bouts 2 and 3 when preceded by an active recovery. In addition, the active recovery was associated with more rapid pH recovery in the 15 min recovery intervals. Active recovery also enhances blood lactate elimination during multiple bouts of intense exercise to exhaustion. However, performance may not be dependent upon blood acid-base balance as there was no difference between trials.
590 $a School code: 0142.
650 4 $a Health Sciences, Human Development. $3 1019218
650 4 $a Health Sciences, Recreation. $3 1018003
650 4 $a Biology, Animal Physiology. $3 1017835
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