scholarly journals Physical activity level and perceived exertion predict in-task affective valence to low-volume high-intensity interval exercise in adult males

2020 ◽  
Vol 224 ◽  
pp. 112960
Author(s):  
Luiz F. Farias-Junior ◽  
Rodrigo A.V. Browne ◽  
Todd A. Astorino ◽  
Eduardo C. Costa
2003 ◽  
Vol 62 (3) ◽  
pp. 645-650 ◽  
Author(s):  
Klaas R. Westerterp

Activity intensity is a potential determinant of activity-induced energy expenditure. Tri-axial accelerometery is the most objective measurement technique for the assessment of activity intensity, in combination with doubly-labelled water for the measurement of energy expenditure under free-living conditions. Data on the effects of subject characteristics, including body size and age, and exercise training on the relationship between activity intensity and daily energy expenditure are reviewed. Average daily metabolic rate and non-basal energy expenditure are positively related to body size. The duration and intensity of physical activities do not need to be equivalent to the energy spent on activity. Obese subjects spend more energy on physical activity but can perform fewer activities, especially high-intensity (weight-bearing) activities, because of their higher body weight. Physical activity generally declines gradually from about 60 years of age onwards. Most subjects >80 years have an activity level well below the level defined for sedentary middle-aged adults. Spending relatively more time on low-intensity activities has a negative effect on the mean physical activity level. To obtain a higher physical activity level does not necessarily imply high-intensity activities. In an average subject 25% of the activity-induced energy expenditure may be attributed to high-intensity activities. Exercise training, as a form of high-intensity activity, affects the physical activity level more in younger subjects than in elderly subjects.


2017 ◽  
Vol 31 (8) ◽  
pp. 2263-2269 ◽  
Author(s):  
Teresa C.B. Dantas ◽  
Luiz F. Farias Junior ◽  
Danniel T. Frazão ◽  
Paulo H.M. Silva ◽  
Altieres E. Sousa Junior ◽  
...  

2020 ◽  
Vol 7 (3-4) ◽  
pp. 100158 ◽  
Author(s):  
Zachery A. Roloff ◽  
Nathan D. Dicks ◽  
Luke M. Krynski ◽  
Mark E. Hartman ◽  
Panteleimon Ekkekakis ◽  
...  

2020 ◽  
Vol 11 ◽  
Author(s):  
Chun Xie ◽  
Brandon L. Alderman ◽  
Fanying Meng ◽  
Jingyi Ai ◽  
Yu-Kai Chang ◽  
...  

2015 ◽  
Author(s):  
Ελένη Κορτιάνου

Patients with COPD are less physically active, compared with healthy age-matched individuals. It remains unknown whether indices expressing respiratory, central hemodynamic and peripheral muscle oxygenation capacities are related to the reduced levels of daily physical activity (DPA) and whether improvement in physiological indices after pulmonary rehabilitation is associated with improvement in daily physical activity levels.The purpose of this study was to investigate whether: a) activity monitoring reflects variations in biological variables during walking in COPD, b) the intensity of DPA is associated with limitations in respiratory and cardiovascular function as well as in peripheral muscle oxygenation and c) high-intensity interval exercise training-induced biological improvements are associated with improvement in DPA levels.To accomplish the aims three studies were undertaken: a) 42 patients performed an incremental treadmill protocol to the limit of tolerance, b) 19 patients underwent an indoor treadmill test at a speed corresponding to the individual patient’s mean DPA intensity, captured by a triaxial accelerometer during a preceded 7-day period and c) 50 patients were randomly assigned in 2 groups: intervention (n=30) and control (n=20). The intervention group attended a 3-month pulmonary rehabilitation program consisted with high-intensity interval exercise training. Controls did not participate in any regular exercise training.During a) the incremental treadmill protocol strong correlations were found between treadmill walking intensity and oxygen consumption; minute ventilation; cardiac output and arteriovenous oxygen concentration difference b) the indoor treadmill test, the individual patient mean DPA intensity was significantly correlated with changes from baseline in cardiac output recorded by impedance cardiography, systemic vascular conductance, systemic oxygen delivery, arterio-venous oxygen content difference and quadriceps muscle fractional oxygen saturation assessed by near infrared spectrometry. When chest wall volumes, captured by Optoelectronic Plethysmography, were expressed relative to comparable levels of minute ventilation, active patients differed from the less active ones in terms of the lower increase in end-expiratory chest wall volume, the greater expansion in tidal volume and the larger inspiratory reserve chest wall volume (IRVcw). IRVcw, expiratory flow and Borg dyspnoea score emerged as the best contributors accounting for 71.7% of the explained variance in daily movement intensity and c) the course of pulmonary rehabilitation program, improvements in ventilatory and metabolic variables expressing patients’ exercise capacity were associated (0.34<r<0.64) with improvement in daily physical activity levels.Conclusively, in patients with COPD a) activity monitoring reliably reflects variations in central hemodynamic, respiratory and muscle metabolic variations during walking b) besides ventilatory limitations and peripheral muscle weakness, intensity of DPA is associated with both central hemodynamic and peripheral muscle oxygenation capacities. Patients exhibiting greater ability to expand tidal volume and to maintain adequate inspiratory reserve volume tend to be more physically active and c) improvement in physiological variables following high-intensity interval exercise training is associated with improvement in DPA levels.


2019 ◽  
Vol 16 (9) ◽  
pp. 727-735 ◽  
Author(s):  
Yuri Alberto Freire ◽  
Geovani de Araújo Dantas de Macêdo ◽  
Rodrigo Alberto Vieira Browne ◽  
Luiz Fernando Farias-Junior ◽  
Ágnes Denise de Lima Bezerra ◽  
...  

Background: This study analyzed the effect of walking breaks or low-volume high-intensity interval exercise (LV-HIIE) on markers of metabolic syndrome relative to a day of prolonged sitting. Methods: Twenty-five adults with excess body fat participated in this crossover trial: (1) 10-hour sitting day (SIT), (2) LV-HIIE followed by a sitting day (EX+SIT), and (3) sitting day with 5-minute walking breaks for every 20 minutes (SIT+WB). Glucose and blood pressure (BP) were measured before and 1 hour after 4 meals and 2 hours after lunch. Triglycerides were measured at baseline, 2, and 3.5 hours after lunch. Generalized mixed models were used to identify differences in the area under the curve (AUC) of BP and incremental AUC (iAUC) of glucose and triglycerides among the sessions. Results: iAUC-glucose was lower in SIT+WB than SIT (β = −35.3 mg/dL·10 h; 95% confidence interval, −52.5 to −8.2). AUC-diastolic BP was lower in SIT+WB than SIT (β = −14.1 mm Hg·10 h; 95% confidence interval, −26.5 to −1.6) and EX+SIT (β = −14.5 mm Hg·10 h; 95% confidence interval, −26.9 to −2.1). There were no differences in triglycerides and systolic BP levels among the sessions. Conclusion: Adults with excess body fat present lower glucose and diastolic BP during a day with breaks in sitting time compared with a prolonged sitting day with or without an LV-HIIE session.


Author(s):  
Isabela R. MARÇAL ◽  
Pedro G. FALQUEIRO ◽  
Bianca FERNANDES ◽  
Awassi Y. NGOMANE ◽  
Vanessa T. AMARAL ◽  
...  

2019 ◽  
Vol 44 (4) ◽  
pp. 348-356 ◽  
Author(s):  
Ariane Aparecida Viana ◽  
Bianca Fernandes ◽  
Cristian Alvarez ◽  
Guilherme Veiga Guimarães ◽  
Emmanuel Gomes Ciolac

We tested the hypothesis that rating of perceived exertion (RPE) is a tool as efficient as the heart rate (HR) response to the cardiopulmonary exercise test (CPX) for prescribing and self-regulating high-intensity interval exercise (HIIE), and that metabolic and hemodynamic response to HIIE is superior than to continuous moderate-intensity exercise (MICE) in individuals with type 2 diabetes mellitus (T2DM). Eleven participants (age = 52.3 ± 3 years) underwent HIIE prescribed and self-regulated by RPE (HIIERPE; 25 min), HIIE prescribed and regulated by an individual’s HR response to CPX (HIIEHR; 25 min), MICE prescribed and self-regulated by RPE (30 min) and control (30 min of seated resting) intervention in random order. HR, blood pressure (BP), capillary glucose, endothelial reactivity, and carotid-femoral pulse wave velocity were assessed before, immediately after, and 45 min after each intervention. Exercise HR, speed, and distance were measured during exercise sessions. Twenty-four-hour ambulatory BP was measured after each intervention. Exercise HR, speed, and distance were similar between HIIERPE and HIIEHR. BP response was not different among HIIERPE, HIIEHR, and MICE. Capillary glycaemia reduction was greater (P < 0.05) after HIIERPE (48.6 ± 9.6 mg/dL) and HIIEHR (47.2 ± 9.5 mg/dL) than MICE (29.5 ± 11.5 mg/dL). Reduction (P < 0.05) in 24-h (6.7 ± 2.2 mm Hg) and tendency toward reduction (P = 0.06) in daytime systolic (7.0 ± 2.5 mm Hg) ambulatory BP were found only after HIIERPE. These results suggest that HIIE is superior to MICE for reducing glycaemia and ambulatory BP, and that the 6–20 RPE scale is a useful tool for prescribing and self-regulating HIIE in individuals with T2DM.


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