Abstract:
:The ventilatory threshold (VT) has been suggested as a method for determining exercise training intensity in cardiac transplant patients (CTPs). Since the VT has not been validated against the more accepted marker of the anaerobic threshold, the lactate threshold (LT), in CTPs, the purpose of this investigation was to compare the VT to the LT within, as well as between, CTPs and normal subjects (NLs). Ten male orthotopic CTPs and 10 age, size, and gender matched NLs were exercised to symptom-limited maximal levels following incremental treadmill protocols. The VT was determined using the V-slope method, and the LT was identified using the log-log transformation method. The NLs and significantly higher absolute levels of VO2 at both the VT (1298.6 +/- 78.5 vs 919.0 +/- 57.2 ml.min-1) and LT (1561.1 +/- 144.2 vs 921.6 +/- 47.6 ml.min-1) compared with the CTPs. However, there was no significant difference in the relative VO2 (% peak) between CTPs and NLs at the VT (57.2 +/- 3.0 vs 49.0 +/- 3.5%) or LT (58.2 +/- 3.3 vs 58.5 +/- 4.9%), respectively. Within groups there was no significant difference between the VT and LT for either CTPs (919.0 +/- 57.2 vs 921.6 +/- 47.6 ml.min-1 or NLs (1298.6 +/- 78.5 vs 1561.1 +/- 144.2 ml.min-1). From the results of this investigation it appears that the VT may be used as an indicator of LT in CTPs and is within a range acceptable for clinical application.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Brubaker PH,Berry MJ,Brozena SC,Morley DL,Walter JD,Paolone AM,Bove AAsubject
Has Abstractpub_date
1993-02-01 00:00:00pages
191-6issue
2eissn
0195-9131issn
1530-0315journal_volume
25pub_type
临床试验,杂志文章abstract:INTRODUCTION:Common life events, such as getting married or gaining employment, may be opportunities to intervene on health behaviors like physical activity. The purpose of this study was to determine the changes in moderate-to-vigorous physical activity (MVPA) associated with several common life events from adolescenc...
journal_title:Medicine and science in sports and exercise
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doi:10.1249/MSS.0000000000001839
更新日期:2019-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/MSS.0000000000000455
更新日期:2015-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1249/00005768-198508000-00001
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000001637
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journal_title:Medicine and science in sports and exercise
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doi:
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pub_type: 杂志文章
doi:10.1249/MSS.0b013e3182300267
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e31824f5be4
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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