The effects of repetitive lifting on heart rate responses and perceived exertion in a young and middle-aged population

2012 ◽  
pp. 110-118
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Middle Aged ◽  
Aged Population ◽  
Repetitive Lifting

Heart Rate Variability Findings as a Predictor of Atrial Fibrillation in Middle-Aged Population

2014 ◽  
Vol 25 (7) ◽  
pp. 719-724 ◽  
Author(s):  
JUHA PERKIÖMÄKI ◽  
OLAVI UKKOLA ◽  
ANTTI KIVINIEMI ◽  
MIKKO TULPPO ◽  
ANTTI YLITALO ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Middle Aged ◽  
Aged Population

Heart rate variability as predictor of atrial fibrillation in middle-aged population

2013 ◽  
Vol 46 (4) ◽  
pp. e10
Author(s):  
J.S. Perkiömäki ◽  
O. Ukkola ◽  
A. Kiviniemi ◽  
M. Tulppo ◽  
A. Ylitalo ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Middle Aged ◽  
Aged Population

scholarly journals Usefulness of Linear Mixed-Effects Models to Assess the Relationship between Objective and Subjective Internal Load in Team Sports

2021 ◽  
Vol 18 (2) ◽  
pp. 392
Author(s):  
Alice Iannaccone ◽  
Daniele Conte ◽  
Cristina Cortis ◽  
Andrea Fusco
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Team Sports ◽  
Rating Of Perceived Exertion ◽  
Subjective Measures ◽  
Internal Load ◽  
Random Slopes ◽  
The Relationship

Internal load can be objectively measured by heart rate-based models, such as Edwards’ summated heart rate zones, or subjectively by session rating of perceived exertion. The relationship between internal loads assessed via heart rate-based models and session rating of perceived exertion is usually studied through simple correlations, although the Linear Mixed Model could represent a more appropriate statistical procedure to deal with intrasubject variability. This study aimed to compare conventional correlations and the Linear Mixed Model to assess the relationships between objective and subjective measures of internal load in team sports. Thirteen male youth beach handball players (15.9 ± 0.3 years) were monitored (14 training sessions; 7 official matches). Correlation coefficients were used to correlate the objective and subjective internal load. The Linear Mixed Model was used to model the relationship between objective and subjective measures of internal load data by considering each player individual response as random effect. Random intercepts were used and then random slopes were added. The likelihood-ratio test was used to compare statistical models. The correlation coefficient for the overall relationship between the objective and subjective internal data was very large (r = 0.74; ρ = 0.78). The Linear Mixed Model using both random slopes and random intercepts better explained (p < 0.001) the relationship between internal load measures. Researchers are encouraged to apply the Linear Mixed Models rather than correlation to analyze internal load relationships in team sports since it allows for the consideration of the individuality of players.

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