Physiologic assessment of phosphoglycerate mutase deficiency: Incremental exercise tests

Neurology ◽  
1985 ◽  
Vol 35 (6) ◽  
pp. 828-828 ◽  
Author(s):  
J. T. Kissel ◽  
W. Beam ◽  
N. Bresolin ◽  
G. Gibbons ◽  
S. DiMauro ◽  
...  
Keyword(s):  
Incremental Exercise ◽  
Phosphoglycerate Mutase ◽  
Exercise Tests

Blood glucose threshold and the metabolic responses to incremental exercise tests with and without prior lactic acidosis induction

2003 ◽  
Vol 89 (6) ◽  
pp. 603-611 ◽  
Author(s):  
Herbert Gustavo Sim�es ◽  
Carmen S. G. Campbell ◽  
Michael R. Kushnick ◽  
Akiko Nakamura ◽  
Christos S. Katsanos ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Lactic Acidosis ◽  
Incremental Exercise ◽  
Metabolic Responses ◽  
Exercise Tests ◽  
Glucose Threshold

Cardiorespiratory responses during three repeated incremental exercise tests in sickle cell trait carriers

2007 ◽  
Vol 102 (2) ◽  
pp. 181-187 ◽  
Author(s):  
Laurent Marlin ◽  
Philippe Connes ◽  
Sophie Antoine-Jonville ◽  
Julien Tripette ◽  
Mona Montout-Hedreville ◽  
...  
Keyword(s):  
Sickle Cell ◽  
Sickle Cell Trait ◽  
Incremental Exercise ◽  
Exercise Tests ◽  
Cardiorespiratory Responses

A Prediction Model for Peak Power Output From Different Incremental Exercise Tests

2006 ◽  
Vol 1 (2) ◽  
pp. 122-136 ◽  
Author(s):  
Hans Luttikholt ◽  
Lars R. McNaughton ◽  
Adrian W. Midgley ◽  
David J. Bentley
Keyword(s):  
Power Output ◽  
Peak Power ◽  
Cycle Ergometer ◽  
Incremental Exercise ◽  
Peak Power Output ◽  
Exercise Tests ◽  
Male Athletes ◽  
Power Profile ◽  
Wide Range ◽  
Level Of Agreement

Context:There is currently no model that predicts peak power output (PPO) thereby allowing comparison between different incremental exercise test (EXT) protocols. In this study we have used the critical power profile to develop a mathematical model for predicting PPO from the results of different EXTs.Purpose:The purpose of this study was to examine the level of agreement between actual PPO values and those predicted from the new model.Methods:Eleven male athletes (age 25 ± 5 years, VO2max 62 ± 8 mL · kg–1 · min–1) completed 3 laboratory tests on a cycle ergometer. Each test comprised an EXT consisting of 1-minute workload increments of 30 W (EXT30/1) and 3-minute (EXT25/3) and 5-minute workload increments (EXT25/5) of 25 W. The PPO determined from each test was used to predict the PPO from the remaining 2 EXTs.Results:The differences between actual and predicted PPO values were statistically insignificant (P > .05). The random error components of the limits of agreement of ≤30 W also indicated acceptable levels of agreement between actual and predicted PPO values.Conclusions:Further data collection is necessary to confirm whether the model is able to predict PPO over a wide range of EXT protocols in athletes of different aerobic and anaerobic capacities.

HEART RATE DEFLECTION, HEART RATE TURN POINT, AND MAXLASS IN DIFFERENT INCREMENTAL EXERCISE TESTS

2002 ◽  
Vol 34 (5) ◽  
pp. S182
Author(s):  
I Floimayr ◽  
R Pokan ◽  
P Hofmann ◽  
S P. von Duvillard ◽  
P Schmid ◽  
...  
Keyword(s):  
Heart Rate ◽  
Incremental Exercise ◽  
Turn Point ◽  
Exercise Tests

scholarly journals Does cerebral oxygen delivery limit incremental exercise performance?

2011 ◽  
Vol 111 (6) ◽  
pp. 1727-1734 ◽  
Author(s):  
Andrew W. Subudhi ◽  
J. Tod Olin ◽  
Andrew C. Dimmen ◽  
David M. Polaner ◽  
Bengt Kayser ◽  
...  
Keyword(s):  
Exercise Performance ◽  
Oxygen Delivery ◽  
Respiratory Acidosis ◽  
Barometric Pressure ◽  
Incremental Exercise ◽  
Peak Oxygen Consumption ◽  
Peak Power Output ◽  
Cerebral Oxygen ◽  
Exercise Tests ◽  
Hemoglobin Oxygenation

Previous studies have suggested that a reduction in cerebral oxygen delivery may limit motor drive, particularly in hypoxic conditions, where oxygen transport is impaired. We hypothesized that raising end-tidal Pco2 (PetCO2) during incremental exercise would increase cerebral blood flow (CBF) and oxygen delivery, thereby improving peak power output (Wpeak). Amateur cyclists performed two ramped exercise tests (25 W/min) in a counterbalanced order to compare the normal, poikilocapnic response against a clamped condition, in which PetCO2 was held at 50 Torr throughout exercise. Tests were performed in normoxia (barometric pressure = 630 mmHg, 1,650 m) and hypoxia (barometric pressure = 425 mmHg, 4,875 m) in a hypobaric chamber. An additional trial in hypoxia investigated effects of clamping at a lower PetCO2 (40 Torr) from ∼75 to 100% Wpeak to reduce potential influences of respiratory acidosis and muscle fatigue imposed by clamping PetCO2 at 50 Torr. Metabolic gases, ventilation, middle cerebral artery CBF velocity (transcranial Doppler), forehead pulse oximetry, and cerebral (prefrontal) and muscle (vastus lateralis) hemoglobin oxygenation (near infrared spectroscopy) were monitored across trials. Clamping PetCO2 at 50 Torr in both normoxia ( n = 9) and hypoxia ( n = 11) elevated CBF velocity (∼40%) and improved cerebral hemoglobin oxygenation (∼15%), but decreased Wpeak (6%) and peak oxygen consumption (11%). Clamping at 40 Torr near maximal effort in hypoxia ( n = 6) also improved cerebral oxygenation (∼15%), but again limited Wpeak (5%). These findings demonstrate that increasing mass cerebral oxygen delivery via CO2-mediated vasodilation does not improve incremental exercise performance, at least when accompanied by respiratory acidosis.

scholarly journals A comparison of incremental exercise tests during cycle and treadmill ergometry

1983 ◽  
Vol 15 (6) ◽  
pp. vii ◽  
Author(s):  
RONALD D. FAIRSHTER ◽  
JOHN WALTERS ◽  
KYM SALNESS ◽  
MICHAEL FOX ◽  
VU-DINH MINH ◽  
...  
Keyword(s):  
Incremental Exercise ◽  
Exercise Tests ◽  
Treadmill Ergometry

scholarly journals Comparison of 6-min ???all-out??? and incremental exercise tests in elite oarsmen

1984 ◽  
Vol 16 (6) ◽  
pp. 567???571 ◽  
Author(s):  
DONALD A. MAHLER ◽  
BRUCE E. ANDREA ◽  
DONALD C. ANDRESEN
Keyword(s):  
Incremental Exercise ◽  
Exercise Tests
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