P6328Relationship between exercise capacity and muscle function in adult patients with heart failure

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
O Chiala ◽  
L Klompstra ◽  
E Vellone ◽  
A Stromberg ◽  
T Jaarsma
Keyword(s):  
Principal Component Analysis ◽  
Physical Fitness ◽  
Exercise Capacity ◽  
Muscle Function ◽  
Principal Component ◽  
Component Analysis ◽  
Function Tests ◽  
Body Strength ◽  
Shoulder Flexion ◽  
Heel Lift

Abstract Introduction Physical fitness is a multidimensional concept and is of great importance to assess in heart failure (HF) patients, due to that HF is associated with exercise intolerance, dyspnea and fatigue. Some measures of physical fitness have been associated to HF severity, rehospitalization and mortality risk. Purpose The aim of this study was to explore the relationship between two different measures of physical fitness in patients with HF: exercise capacity and muscle function. Methods This is a secondary analysis performed on the baseline data of a multi-centre RCT study aimed at exploring the effect of exergame access to improving exercise capacity in HF patients. Physical fitness was assessed by two different measures: exercise capacity assessed by the 6-minute walk test (6MWT), and muscle function assessed by 3 different isometric tests of upper and lower limbs. Descriptive statistics, Spearman correlation and principal component analysis were used to analyse the data. Results In total, 605 HF patients were included in this analysis (mean age 67±12, 29% women, 90% NYHA II/III). Exercise capacity (6MWT) was correlated with all of the muscle function tests, with correlation-coefficients ranging from r=0.23 to r=0.50 (p<0.001). Principal component analysis showed a bi-dimensional nature of physical fitness, with the first dimension including the lower body strength and the second dimension including the upper body strength and exercise capacity. These two dimensions explained 71% of the total variance of the measured variables. Correlation matrix (n=605) 6MWT Right Heel-Lift Left Heel-Lift Shoulder abduction Right Shoulder Flexion Left Shoulder Flexion 6MWT 1 Right Heel-Lift 0.23** 1 Left Heel-Lift 0.26** 0.86** 1 Shoulder abduction 0.40** 0.30** 0.34** 1 Right Shoulder Flexion 0.47** 0.51** 0.48** 0.52** 1 Left Shoulder Flexion 0.50** 0.49** 0.48** 0.52** 0.83** 1 **p<0.001. Principal Component Analysis Conclusions Although strong correlations between exercise capacity and muscle function tests, the measures loaded on two different factors. The results suggest that upper body strength and exercise capacity had a stronger relationship than with lower body strength. This may imply that muscle function tests for upper and lower limbs and exercise capacity represent different aspects of physical fitness and to attain a more complete assessment of physical fitness all three tests are important. Acknowledgement/Funding Swedish National Science Council, The Swedish Heart and Lung Association, The Swedish Heart and Lung Association, Swedish Heart-Lung Foundation

scholarly journals Principal Component Analysis and Prediction of Students’ Physical Health Standard Test Results Based on Recurrent Convolution Neural Network

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Kai Hou
Keyword(s):  
Neural Network ◽  
Principal Component Analysis ◽  
Physical Fitness ◽  
Physical Health ◽  
Convolutional Neural Network ◽  
Deep Structure ◽  
Principal Component ◽  
Component Analysis ◽  
Standing Long Jump ◽  
Long Jump

The recurrent convolutional neural network is an advanced neural network that integrates deep structure and convolution calculation. The feedforward neural network with convolution operation and deep structure is an important method of deep learning. In this paper, the convolutional neural network and the recurrent neural network are combined to establish a recurrent convolutional neural network model composed of anomalies, LSTM (Long Short-Term Memory), and CNN. This study combines the principal component analysis method to predict and analyze the test results of students’ physical fitness standards. The innovation lies in the introduction of the function of the recurrent convolutional network and the use of principal component analysis to conduct qualitative research on seven evaluation indicators that reflect the three aspects of students’ physical health. The results of the study clearly show that there is a strong correlation between some indicators, such as standing long jump and sitting bends which may have a strong correlation. The first principal component eigenvalue has the highest contribution rate, which mainly reflects the five indicators of standing long jump, sitting forward bend, pull-up, 50 m sprint, and 1000 m long-distance running. This shows that the physical fitness indicators have a great impact on the physical health of students, which also reflects the current status of students’ physical fitness problems. The results of principal component analysis are scientific and reasonable.

scholarly journals Exploring Physical Fitness Profile of Male and Female Semiprofessional Basketball Players through Principal Component Analysis—A Case Study

2021 ◽  
Vol 6 (3) ◽  
pp. 67
Author(s):  
Carlos D. Gómez-Carmona ◽  
David Mancha-Triguero ◽  
José Pino-Ortega ◽  
Sergio J. Ibáñez
Keyword(s):  
Principal Component Analysis ◽  
Physical Fitness ◽  
Principal Component ◽  
Component Analysis ◽  
Physical Conditioning ◽  
Basketball Players ◽  
Jump Performance ◽  
Male And Female ◽  
Practical Applications ◽  
Fitness Level

Basketball is a sport in continuous evolution, being one of these key aspects of the players’ physical fitness that has an impact on the game. Therefore, this study aimed to characterize and identify the physical fitness level and profiles of basketball players according to sex. Total of 26 semi-professional basketball players were assessed (13 male, 13 female) through inertial devices in different previously validated fitness tests. T-test for independent samples and principal component analysis were used to analyze sex-related differences and to identify physical fitness profiles. The results showed differences according to sex in all physical fitness indexes (p < 0.01; d > 1.04) with higher values in males, except in accelerometer load during small-sided games (p = 0.17; d < 0.20). Four principal components were identified in male and female basketball players, being two common ([PC1] aerobic capacity and in-game physical conditioning, [PC4 male, PC3 female] unipodal jump performance) and two different profiles (male: [PC2] bipodal jump capacity and acceleration, [PC3] curvilinear displacement; female: [PC2] bipodal jump capacity and curvilinear displacement, [PC4] deceleration). In conclusion, training design must be different and individualized according to different variables, including physical fitness profiles between them. For practical applications, these results will allow knowing the advantages and weaknesses of each athlete to adapt training tasks and game systems based on the skills and capabilities of the players in basketball.

Age-Related Differences in Gait Kinematics, Kinetics, and Muscle Function: A Principal Component Analysis

2016 ◽  
Vol 45 (3) ◽  
pp. 695-710 ◽  
Author(s):  
Sarah A. Schloemer ◽  
Julie A. Thompson ◽  
Amy Silder ◽  
Darryl G. Thelen ◽  
Robert A. Siston
Keyword(s):  
Principal Component Analysis ◽  
Muscle Function ◽  
Principal Component ◽  
Component Analysis ◽  
Gait Kinematics ◽  
Age Related

scholarly journals Feasibility and validity of the PERF-FIT  test battery  to  assess movement skills, agility  and  power  among  children  in  low- resource  settings.

2020 ◽  
Author(s):  
Bouwien Smits-Engelsman ◽  
Emmanuel Bonney ◽  
Jorge Lopes Cavalcante Neto ◽  
Dorothee L Jelsma
Keyword(s):  
Principal Component Analysis ◽  
Physical Fitness ◽  
Content Validity ◽  
Principal Component ◽  
Component Analysis ◽  
Test Battery ◽  
Structural Validity ◽  
Low Resource Settings ◽  
Low Resource ◽  
Movement Skills

Abstract Background: Numerous movement skills and physical fitness tests have been developed for children in high-income countries. However, adaptation of these tests to low-resource settings has been slow and norms are still unavailable for children living in low-income communities. The aim of this paper was to describe the development and validation of the Performance and Fitness (PERF-FIT) test battery, a new test to assess motor skill-related physical fitness in children in low-resource settings. Method: The PERF-FIT test was developed in a stepwise manner. This involved defining the relevant domains of the construct of interest and selecting and evaluating test items. The Content Validity Index (CVI) was used to estimate content validity. Following development of the PERF-FIT test, a preliminary study was performed to validate items and to examine the feasibility of implementing the test in a low-resource community. Structural validity was also determined based on data from eighty (n=80) children (aged 7-12 years) using principal component analysis.Results: The CVI for the throw and catch item was 0.86 and 1.00 for the other nine items, leading to a total CVI score of 0.99. The hierarchical sequence of the item series was demonstrated by highly significant (p<0.001) linear trends, confirming the increase in difficulty of subsequent items. Principal component analysis revealed three factors; the first component is represented by locomotor skills that require static and dynamic balance, the second component by throwing and catching items and the third component by agility and power items. These findings suggest that it is feasible to implement the PERF-FIT in low-resource settings. Conclusion: The PERF-FIT test battery is easy to administer and may be suitable for measuring skill-related physical fitness in in low-resource settings. It has excellent content validity and good structural validity. After minor adaptions, further studies should be conducted to establish normative values, evaluate reliability, and document criterion and cross-cultural validity of this test.

A German version of the Intermittent Claudication Questionnaire (ICQ): cultural adaptation and validation

VASA ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 333-342 ◽  
Author(s):  
Kirchberger ◽  
Finger ◽  
Müller-Bühl
Keyword(s):  
Principal Component Analysis ◽  
Intermittent Claudication ◽  
Completion Time ◽  
Short Form ◽  
Principal Component ◽  
Component Analysis ◽  
German Version ◽  
Average Completion Time ◽  
Sf 36 ◽  
Related Quality

Background: The Intermittent Claudication Questionnaire (ICQ) is a short questionnaire for the assessment of health-related quality of life (HRQOL) in patients with intermittent claudication (IC). The objective of this study was to translate the ICQ into German and to investigate the psychometric properties of the German ICQ version in patients with IC. Patients and methods: The original English version was translated using a forward-backward method. The resulting German version was reviewed by the author of the original version and an experienced clinician. Finally, it was tested for clarity with 5 German patients with IC. A sample of 81 patients were administered the German ICQ. The sample consisted of 58.0 % male patients with a median age of 71 years and a median IC duration of 36 months. Test of feasibility included completeness of questionnaires, completion time, and ratings of clarity, length and relevance. Reliability was assessed through a retest in 13 patients at 14 days, and analysis of Cronbach’s alpha for internal consistency. Construct validity was investigated using principal component analysis. Concurrent validity was assessed by correlating the ICQ scores with the Short Form 36 Health Survey (SF-36) as well as clinical measures. Results: The ICQ was completely filled in by 73 subjects (90.1 %) with an average completion time of 6.3 minutes. Cronbach’s alpha coefficient reached 0.75. Intra-class correlation for test-retest reliability was r = 0.88. Principal component analysis resulted in a 3 factor solution. The first factor explained 51.5 of the total variation and all items had loadings of at least 0.65 on it. The ICQ was significantly associated with the SF-36 and treadmill-walking distances whereas no association was found for resting ABPI. Conclusions: The German version of the ICQ demonstrated good feasibility, satisfactory reliability and good validity. Responsiveness should be investigated in further validation studies.

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