scholarly journals Characteristics of Pedaling Muscle Stiffness among Cyclists of Different Performance Levels

Medicina ◽  
2021 ◽  
Vol 57 (6) ◽  
pp. 606
Author(s):  
Isaac López-Laval ◽  
Rafel Cirer-Sastre ◽  
Francisco Corbi ◽  
Sebastian Sitko
Keyword(s):  
Exercise Test ◽  
Vastus Lateralis ◽  
Performance Level ◽  
Muscle Stiffness ◽  
Incremental Exercise ◽  
Performance Levels ◽  
Incremental Exercise Test ◽  
Cohen’S D ◽  
Cohen's D ◽  
The Impact

Background and Objectives: The aim of the present study was to compare the impact of an incremental exercise test on muscle stiffness in the rectus femoris (RF), vastus lateralis (VL), biceps femoris (BF), and gastrocnemius (GL) among road cyclists of three performance levels. Materials and Methods: The study group consisted of 35 cyclists grouped according to their performance level; elite (n = 10; professional license), sub-elite (n = 12; amateur license), and recreational (n = 13; cyclosportive license). Passive muscle stiffness was assessed using myometry before and after an incremental exercise test. Results: There was a significant correlation between time and category in the vastus lateralis with stiffness increases in the sub-elite (p = 0.001, Cohen’s d = 0.88) and elite groups (p = 0.003, Cohen’s d = 0.72), but not in the recreational group (p = 0.085). Stiffness increased over time in the knee extensors (RF, p < 0.001; VL, p < 0.001), but no changes were observed in the knee flexors (GL, p = 0.63, BF, p = 0.052). There were no baseline differences among the categories in any muscle. Conclusions: Although the performance level affected VL stiffness after an incremental exercise test, no differences in passive stiffness were observed among the main muscles implicated in pedaling in a resting state. Future research should assess whether this marker could be used to differentiate cyclists of varying fitness levels and its potential applicability for the monitoring of training load.

Maximal oxygen uptake, ventilatory threshold and fat oxidation after an incremental exercise test in triathletes

2017 ◽  
Vol 176 (12) ◽  
Author(s):  
Hanapi M. Johari ◽  
Brinnell A. Caszo ◽  
Victor F. Knight ◽  
Steven A. Lumley ◽  
Aminuddin K. Abdul Hamid ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Exercise Test ◽  
Maximal Oxygen Uptake ◽  
Ventilatory Threshold ◽  
Fat Oxidation ◽  
Incremental Exercise ◽  
Incremental Exercise Test

Changes in physiological, haematological and biochemical parameters in police working dogs during a treadmill incremental exercise test

2020 ◽  
Vol 16 (5) ◽  
pp. 387-394
Author(s):  
J.C. Alves ◽  
A. Santos ◽  
P. Jorge ◽  
M.P. Lafuente
Keyword(s):  
Exercise Test ◽  
Biochemical Parameters ◽  
Complete Blood Count ◽  
Rest Period ◽  
Incremental Exercise ◽  
Total Plasma ◽  
Incremental Exercise Test ◽  
Total Plasma Protein ◽  
Working Dogs ◽  
Stage T1

This study aimed to evaluate the physiological, haematological and biochemical changes during a treadmill incremental exercise test (IET). Animals were submitted to five stages of 6 min each, at 6, 7, 8, 9 and 10 mph, at an inclination of 5%. Blood samples were collected at rest (T0), immediately after exercise (T5) and after a 20 min rest period (T6), to determine complete blood count, urea, creatinine, creatine kinase, aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, total plasma protein, albumin, alkaline phosphatase (AP), cholesterol, triglycerides (Trig), Ca2+, Na+, K+ and Cl-. Blood lactate (BL), heart rate (HR), rectal temperature (RT) and glycaemia were measured at rest (T0), after each stage (T1-T5) and after the rest period (T6). Variations were recorded between T0 and T5 in red blood cells, haemoglobin, AP, Na+, K+ (P<0.01), Trig (P<0.05), Ca2+ and Cl- (P<0.02). Differences were observed in BL at T5 (P<0.02) and T6 (P<0.02), RT at T2-T6 (P<0.01), HR at T3-T5 (P<0.01) and glycaemia at T2-T4 (P<0.01) and T5 (P<0.05). This study is a novel description of the shifts of physical fit police working dogs during this IET protocol.

scholarly journals The Impact of Replacement Conventional Dentures on Eating Experience

2018 ◽  
Vol 4 (1) ◽  
pp. 29-40 ◽  
Author(s):  
H.F. Al-Sultani ◽  
J.C. Field ◽  
J.M. Thomason ◽  
P.J. Moynihan
Keyword(s):  
Quality Of Life ◽  
Social Issues ◽  
Complete Dentures ◽  
Social And Emotional ◽  
Cohen’S D ◽  
Related Quality ◽  
Emotional Issues ◽  
Cohen's D ◽  
The Impact

Introduction: Despite much research on the impact of edentulism and prosthetic rehabilitation on food and nutrient intake, there is little information on how replacing complete dentures affects social and emotional issues around eating. Objectives: To investigate, in a cohort study, how replacing conventional complete dentures affects eating-related quality of life (ERQoL). A secondary aim was to test the responsiveness of an Emotional and Social Issues Related to Eating (ESIRE) questionnaire to change in ERQoL. Methods: Participants, recruited from the Dental Hospital, Newcastle-upon-Tyne, UK, completed the self-administrated ESIRE questionnaire before and after provision of new conventional complete dentures. Paired t test was used to determine any change between pre- and posttreatment ESIRE scores, which can range from 0 (poor) to 100 (excellent). Cohen’s d effect size was used to measure the magnitude of change in ERQoL. Standardized response mean (SRM) was used to measure the responsiveness of the ESIRE questionnaire to changes in ERQoL. Results: Fifty-five participants aged 52 to 85 y (mean, 72 y), including 21 males (42%) and 29 females (58%), completed the study. A statistically significant improvement in the total ESIRE scores was found, mean (SE) +20.3 (3.30), P < 0.001. Equally, all domains of the ESIRE questionnaire showed significant improvements: enjoyment of food/eating, +27.3 (3.63), P < 0.001; self-consciousness/embarrassment, +18.1 (3.88), P < 0.001; interruption to meals, +13.3 (5.27), P < 0.05; confidence when eating, +18.7 (4.84), P < 0.001; time for eating/preparation of meals, +18.5 (4.85), P < 0.001); and functional ability to eat, +18.2 (3.67), P < 0.001). Cohen’s d was large (0.95) for the total score and ranged from medium (0.37) to large (1.30) for all domains. Value of SRM was large (0.87) for the total score and ranged from medium (0.36) to large (1.1) for all domains. Conclusion: Denture replacement can directly improve ERQoL. The ESIRE questionnaire was responsive to clinically important changes in ERQoL. Knowledge Transfer Statement: The results of this study improve the understanding of the impact of denture replacement on eating-related quality of life (ERQoL). Clinicians are encouraged to pay more attention to the impact of wearing conventional complete dentures on social and emotional issues around eating. The findings should motivate clinicians and inspire specialists in prosthodontics and oral rehabilitation to continue providing conventional complete dentures as a suitable treatment option for edentulous patients.

scholarly journals Ventilatory compensation during the incremental exercise test is inversely correlated with air trapping in COPD

F1000Research ◽  
2020 ◽  
Vol 8 ◽  
pp. 1661
Author(s):  
Rottem Kuint ◽  
Neville Berkman ◽  
Samir Nusair
Keyword(s):  
Gas Exchange ◽  
Exercise Testing ◽  
Exercise Test ◽  
Cardiopulmonary Exercise Testing ◽  
Incremental Exercise ◽  
Peak Exercise ◽  
Air Trapping ◽  
Incremental Exercise Test ◽  
Cardiopulmonary Exercise ◽  
Copd Patients

Background: Air trapping and gas exchange abnormalities are major causes of exercise limitation in chronic obstructive pulmonary disease (COPD). During incremental cardiopulmonary exercise testing, actual nadir values of ventilatory equivalents for carbon dioxide (V E/VCO 2) and oxygen (V E/VO 2) may be difficult to identify in COPD patients because of limited ventilatory compensation capacity. Therefore, we aimed in this exploratory study to detect a possible correlation between the magnitude of ventilation augmentation, as manifested by increments in ventilatory equivalents from nadir to peak exercise values and air trapping, detected with static testing.    Methods: In this observational study, we studied data obtained previously from 20 COPD patients who, during routine follow-up, underwent a symptom-limited incremental exercise test and in whom a plethysmography was obtained concurrently. Air trapping at rest was assessed by measurement of the residual volume (RV) to total lung capacity (TLC) ratio (RV/TLC). Gas exchange data collected during the symptom-limited incremental cardiopulmonary exercise test allowed determination of the nadir and peak exercise values of V E/VCO 2 and V E/VO 2, thus enabling calculation of the difference between peak exrcise value and nadir values of  V E/VCO 2 and V E/VO 2, designated ΔV E/VCO 2 and ΔV E/VO 2, respectively. Results: We found a statistically significant inverse correlation between both ΔV E/VCO 2 (r = -0. 5058, 95% CI -0.7750 to -0.08149, p = 0.0234) and ΔV E/VO 2 (r = -0.5588, 95% CI -0.8029 to -0.1545, p = 0.0104) and the degree of air trapping (RV/TLC). There was no correlation between ΔV E/VCO 2 and forced expiratory volume in the first second, or body mass index.  Conclusions: The ventilatory equivalents increment to compensate for acidosis during incremental exercise testing was inversely correlated with air trapping (RV/TLC).

scholarly journals Ventilatory compensation during the incremental exercise test is inversely correlated with air trapping in COPD

F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 1661
Author(s):  
Rottem Kuint ◽  
Neville Berkman ◽  
Samir Nusair
Keyword(s):  
Gas Exchange ◽  
Exercise Testing ◽  
Exercise Test ◽  
Cardiopulmonary Exercise Testing ◽  
Incremental Exercise ◽  
Peak Oxygen Consumption ◽  
Air Trapping ◽  
Incremental Exercise Test ◽  
Cardiopulmonary Exercise ◽  
Copd Patients

Background: Air trapping and gas exchange abnormalities are major causes of exercise limitation in chronic obstructive pulmonary disease (COPD). During incremental cardiopulmonary exercise testing, ventilatory equivalents for carbon dioxide (VE/VCO2) and oxygen (VE/VO2) may be difficult to identify in COPD patients because of limited ventilatory compensation capacity. Therefore, we aimed to detect a possible correlation between the magnitude of ventilation augmentation, as manifested by increments in ventilatory equivalents from nadir to peak effort values and air trapping, detected with static testing.    Methods: In this observational study, we studied data obtained previously from 20 COPD patients who, during routine follow-up, underwent a symptom-limited incremental exercise test and in whom a plethysmography was obtained concurrently. Air trapping at rest was assessed by measurement of the residual volume (RV) to total lung capacity (TLC) ratio (RV/TLC). Gas exchange data collected during the symptom-limited incremental cardiopulmonary exercise test allowed determination of the nadir and peak effort values of VE/VCO2 and VE/VO2, thus enabling calculation of the difference between peak effort value and nadir values of  VE/VCO2 and VE/VO2, designated ΔVE/VCO2 and ΔVE/VO2, respectively. Results: We found a statistically significant inverse correlation between both ΔVE/VCO2 (r = -0. 5058, 95% CI -0.7750 to -0.08149, p = 0.0234) and ΔVE/VO2 (r = -0.5588, 95% CI -0.8029 to -0.1545, p = 0.0104) and the degree of air trapping (RV/TLC). There was no correlation between                ΔVE/VCO2 and peak oxygen consumption, forced expiratory volume in the first second, or body mass index.  Conclusions: The ventilatory equivalents increment to compensate for acidosis during incremental exercise testing was inversely correlated with air trapping (RV/TLC) and may be a candidate prognostic biomarker.

scholarly journals Blood lactate threshold reflects glucose responses in horses submitted to incremental exercise test

2008 ◽  
Vol 60 (1) ◽  
pp. 256-259 ◽  
Author(s):  
G.C. Ferraz ◽  
F.H.F. D’Angelis ◽  
A.R. Teixeira-Neto ◽  
E.V.V. Freitas ◽  
J.C. Lacerda-Neto ◽  
...  
Keyword(s):  
Blood Lactate ◽  
Exercise Test ◽  
Lactate Threshold ◽  
Incremental Exercise ◽  
Incremental Exercise Test

Influence of successive bouts of fatiguing exercise on perceptual and physiological markers during an incremental exercise test

2009 ◽  
Vol 46 (1) ◽  
pp. 209-216 ◽  
Author(s):  
Jeremy B.J. Coquart ◽  
Renaud Legrand ◽  
Sophie Robin ◽  
Alain Duhamel ◽  
Regis Matran ◽  
...  
Keyword(s):  
Exercise Test ◽  
Incremental Exercise ◽  
Incremental Exercise Test ◽  
Fatiguing Exercise ◽  
Physiological Markers

scholarly journals 0636 Using AI To Predict Future CPAP Adherence and the Impact of Behavioral and Technical Interventions

SLEEP ◽  
2020 ◽  
Vol 43 (Supplement_1) ◽  
pp. A243-A243
Author(s):  
W Hevener ◽  
B Beine ◽  
J Woodruff ◽  
D Munafo ◽  
C Fernandez ◽  
...  
Keyword(s):  
Effect Size ◽  
Statistical Significance ◽  
Post Intervention ◽  
Cpap Adherence ◽  
Cohen’S D ◽  
Usage Patterns ◽  
Patient Outreach ◽  
Cohen's D ◽  
The Impact ◽  
Usage Data

Abstract Introduction Clinical management of CPAP adherence remains an ongoing challenge. Behavioral and technical interventions such as patient outreach, coaching, troubleshooting, and resupply may be deployed to positively impact adherence. Previous authors have described adherence phenotypes that retrospectively categorize patients by discrete usage patterns. We design an AI model that predictively categorizes patients into previously studied adherence phenotypes and analyzes the statistical significance and effect size of several types of interventions on subsequent CPAP adherence. Methods We collected a cross-sectional cohort of subjects (N = 13,917) with 455 days of daily CPAP usage data acquired. Patient outreach notes and resupply data were temporally synchronized with daily CPAP usage. Each 30-days of usage was categorized into one of four adherence phenotypes as defined by Aloia et al. (2008) including Good Users, Variable Users, Occasional Attempters, and Non-Users. Cross-validation was used to train and evaluate a Recurrent Neural Network model for predicting future adherence phenotypes based on the dynamics of prior usage patterns. Two-sided 95% bootstrap confidence intervals and Cohen’s d statistic were used to analyze the significance and effect size of changes in usage behavior 30-days before and after administration of several resupply interventions. Results The AI model predicted the next 30-day adherence phenotype with an average of 90% sensitivity, 96% specificity, 95% accuracy, and 0.83 Cohen’s Kappa. The AI model predicted the number of days of CPAP non-use, use under 4-hours, and use over 4-hours for the next 30-days with OLS Regression R-squared values of 0.94, 0.88, and 0.95 compared to ground truth. Ten resupply interventions were associated with statistically significant increases in adherence, and ranked by adherence effect size using Cohen’s d. The most impactful were new cushions or masks, with a mean post-intervention CPAP adherence increase of 7-14% observed in Variable User, Occasional Attempter, and Non-User groups. Conclusion The AI model applied past CPAP usage data to predict future adherence phenotypes and usage with high sensitivity and specificity. We identified resupply interventions that were associated with significant increases in adherence for struggling patients. This work demonstrates a novel application for AI to aid clinicians in maintaining CPAP adherence. Support  

Predicting Cardiopulmonary Response to Incremental Exercise Test

2015 ◽  
Author(s):  
Elena Baralis ◽  
Tania Cerquitelli ◽  
Silvia Chiusano ◽  
Andrea Giordano ◽  
Alessandro Mezzani ◽  
...  
Keyword(s):  
Exercise Test ◽  
Incremental Exercise ◽  
Incremental Exercise Test
Sign in / Sign up

Export Citation Format

Share Document