Effect of endurance training on different mechanical efficiency indices during submaximal cycling in subjects unaccustomed to cycling

Frédérique Hintzy, Laurent Mourot, Stéphane Perrey, Nicolas Tordi

Результат исследований: Материалы для журналаСтатья

11 Цитирования (Scopus)

Выдержка

The purpose of this study was to evaluate different efficiency indices, i.e., gross (GE: no baseline correction), net (NE: resting metabolism as baseline correction), and work (WE: unloaded exercise as baseline correction), to reveal the effect of endurance training on mechanical efficiency. Nine healthy sedentary women undertook an incremental test and submaximal cycling exercise, at an intensity corresponding to 50% of the pretraining peak oxygen uptake, before and after 6 weeks of endurance training (18 sessions of 45 min). The training effects on efficiency indices were tested by comparisons based on GE, NE, and WE as well as by the differences between the percentage changes of all indices (%GE, %NE, %WE). Endurance training resulted in significantly higher GE (+11.1%; p < 0.001) and NE (+9.1%; p < 0.01). Only minor significant improvement (+2.4%; p < 0.05) was observed with the WE index because the value used for baseline subtraction was significantly reduced by the training sessions, due perhaps to improvement in pedaling skill. As a consequence, %WE was significantly lower than %GE (p < 0.01) and %NE (p < 0.05), while %GE and %NE were not significantly different. We conclude that mechanical efficiency of cycling increases with training in women previously unfamiliar with cycling, and that the WE index is less sensitive to this training effect than GE and NE indices.

Язык оригиналаАнглийский
Страницы (с-по)520-528
Число страниц9
ЖурналCanadian Journal of Applied Physiology
Том30
Номер выпуска5
DOI
СостояниеОпубликовано - 1 янв 2005
Опубликовано для внешнего пользованияДа

Отпечаток

Exercise
Foot
Oxygen

ASJC Scopus subject areas

  • Physiology
  • Orthopedics and Sports Medicine

Цитировать

Effect of endurance training on different mechanical efficiency indices during submaximal cycling in subjects unaccustomed to cycling. / Hintzy, Frédérique; Mourot, Laurent; Perrey, Stéphane; Tordi, Nicolas.

В: Canadian Journal of Applied Physiology, Том 30, № 5, 01.01.2005, стр. 520-528.

Результат исследований: Материалы для журналаСтатья

@article{67656412d16c40c7b2b0aaafa419ee6d,
title = "Effect of endurance training on different mechanical efficiency indices during submaximal cycling in subjects unaccustomed to cycling",
abstract = "The purpose of this study was to evaluate different efficiency indices, i.e., gross (GE: no baseline correction), net (NE: resting metabolism as baseline correction), and work (WE: unloaded exercise as baseline correction), to reveal the effect of endurance training on mechanical efficiency. Nine healthy sedentary women undertook an incremental test and submaximal cycling exercise, at an intensity corresponding to 50{\%} of the pretraining peak oxygen uptake, before and after 6 weeks of endurance training (18 sessions of 45 min). The training effects on efficiency indices were tested by comparisons based on GE, NE, and WE as well as by the differences between the percentage changes of all indices ({\%}GE, {\%}NE, {\%}WE). Endurance training resulted in significantly higher GE (+11.1{\%}; p < 0.001) and NE (+9.1{\%}; p < 0.01). Only minor significant improvement (+2.4{\%}; p < 0.05) was observed with the WE index because the value used for baseline subtraction was significantly reduced by the training sessions, due perhaps to improvement in pedaling skill. As a consequence, {\%}WE was significantly lower than {\%}GE (p < 0.01) and {\%}NE (p < 0.05), while {\%}GE and {\%}NE were not significantly different. We conclude that mechanical efficiency of cycling increases with training in women previously unfamiliar with cycling, and that the WE index is less sensitive to this training effect than GE and NE indices.",
keywords = "Cycle ergometer, Gross efficiency, Internal work, Net efficiency, Work efficiency",
author = "Fr{\'e}d{\'e}rique Hintzy and Laurent Mourot and St{\'e}phane Perrey and Nicolas Tordi",
year = "2005",
month = "1",
day = "1",
doi = "10.1139/h05-138",
language = "English",
volume = "30",
pages = "520--528",
journal = "Applied Physiology, Nutrition and Metabolism",
issn = "1715-5312",
publisher = "National Research Council of Canada",
number = "5",

}

TY - JOUR

T1 - Effect of endurance training on different mechanical efficiency indices during submaximal cycling in subjects unaccustomed to cycling

AU - Hintzy, Frédérique

AU - Mourot, Laurent

AU - Perrey, Stéphane

AU - Tordi, Nicolas

PY - 2005/1/1

Y1 - 2005/1/1

N2 - The purpose of this study was to evaluate different efficiency indices, i.e., gross (GE: no baseline correction), net (NE: resting metabolism as baseline correction), and work (WE: unloaded exercise as baseline correction), to reveal the effect of endurance training on mechanical efficiency. Nine healthy sedentary women undertook an incremental test and submaximal cycling exercise, at an intensity corresponding to 50% of the pretraining peak oxygen uptake, before and after 6 weeks of endurance training (18 sessions of 45 min). The training effects on efficiency indices were tested by comparisons based on GE, NE, and WE as well as by the differences between the percentage changes of all indices (%GE, %NE, %WE). Endurance training resulted in significantly higher GE (+11.1%; p < 0.001) and NE (+9.1%; p < 0.01). Only minor significant improvement (+2.4%; p < 0.05) was observed with the WE index because the value used for baseline subtraction was significantly reduced by the training sessions, due perhaps to improvement in pedaling skill. As a consequence, %WE was significantly lower than %GE (p < 0.01) and %NE (p < 0.05), while %GE and %NE were not significantly different. We conclude that mechanical efficiency of cycling increases with training in women previously unfamiliar with cycling, and that the WE index is less sensitive to this training effect than GE and NE indices.

AB - The purpose of this study was to evaluate different efficiency indices, i.e., gross (GE: no baseline correction), net (NE: resting metabolism as baseline correction), and work (WE: unloaded exercise as baseline correction), to reveal the effect of endurance training on mechanical efficiency. Nine healthy sedentary women undertook an incremental test and submaximal cycling exercise, at an intensity corresponding to 50% of the pretraining peak oxygen uptake, before and after 6 weeks of endurance training (18 sessions of 45 min). The training effects on efficiency indices were tested by comparisons based on GE, NE, and WE as well as by the differences between the percentage changes of all indices (%GE, %NE, %WE). Endurance training resulted in significantly higher GE (+11.1%; p < 0.001) and NE (+9.1%; p < 0.01). Only minor significant improvement (+2.4%; p < 0.05) was observed with the WE index because the value used for baseline subtraction was significantly reduced by the training sessions, due perhaps to improvement in pedaling skill. As a consequence, %WE was significantly lower than %GE (p < 0.01) and %NE (p < 0.05), while %GE and %NE were not significantly different. We conclude that mechanical efficiency of cycling increases with training in women previously unfamiliar with cycling, and that the WE index is less sensitive to this training effect than GE and NE indices.

KW - Cycle ergometer

KW - Gross efficiency

KW - Internal work

KW - Net efficiency

KW - Work efficiency

UR - http://www.scopus.com/inward/record.url?scp=33644655474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644655474&partnerID=8YFLogxK

U2 - 10.1139/h05-138

DO - 10.1139/h05-138

M3 - Article

C2 - 16293901

AN - SCOPUS:33644655474

VL - 30

SP - 520

EP - 528

JO - Applied Physiology, Nutrition and Metabolism

JF - Applied Physiology, Nutrition and Metabolism

SN - 1715-5312

IS - 5

ER -