NUMBER OF STEPS, HEART RATE, AND RATE OF PERCEIVED EXERTION DURING 2-MINUTE STEP-IN-PLACE TEST IN ACTIVE ELDERLY WOMEN

2001 ◽  
Vol 33 (5) ◽  
pp. S125
Author(s):  
Vagner Raso ◽  
Sandra Matsudo ◽  
Tim??teo Ara??jo ◽  
Victor Matsudo

Author(s):  
Nicola Giovanelli ◽  
Lara Mari ◽  
Asia Patini ◽  
Stefano Lazzer

Purpose: To compare energetics and spatiotemporal parameters of steep uphill pole walking on a treadmill and overground. Methods: First, the authors evaluated 6 male trail runners during an incremental graded test on a treadmill. Then, they performed a maximal overground test with poles and an overground test at 80% (OG80) of vertical velocity of maximal overground test with poles on an uphill mountain path (length = 1.3 km, elevation gain = 433 m). Finally, they covered the same elevation gain using poles on a customized treadmill at the average vertical velocity of the OG80. During all the tests, the authors measured oxygen uptake, carbon dioxide production, heart rate, blood lactate concentration, and rate of perceived exertion. Results: Treadmills required lower metabolic power (15.3 [1.9] vs 16.6 [2.0] W/kg, P = .002) and vertical cost of transport (49.6 [2.7] vs 53.7 [2.1] J/kg·m, P < .001) compared with OG80. Also, oxygen uptake was lower on a treadmill (41.7 [5.0] vs 46.2 [5.0] mL/kg·min, P = .001). Conversely, respiratory quotient was higher on TR80 compared with OG80 (0.98 [0.02] vs 0.89 [0.04], P = .032). In addition, rate of perceived exertion was higher on a treadmill and increased with elevation (P < .001). The authors did not detect any differences in other physiological measurements or in spatiotemporal parameters. Conclusions: Researchers, coaches, and athletes should be aware that steep treadmill pole walking requires lower energy consumption but same heart rate and rate of perceived exertion than overground pole walking at the same average intensity.



2016 ◽  
Vol 28 (2) ◽  
pp. 407-411 ◽  
Author(s):  
Mariana L. Benites ◽  
Ragami C. Alves ◽  
Sandro S. Ferreira ◽  
Lucio Follador ◽  
Sergio G. da Silva




1997 ◽  
Vol 21 (5) ◽  
pp. 177
Author(s):  
A Berine ◽  
S Rosen ◽  
S Wagner ◽  
D Hudak ◽  
H Gregg ◽  
...  


Author(s):  
Aline De Freitas Brito ◽  
Naiane Ferraz Bandeira Alves ◽  
Alessandra Araújo Silva ◽  
Alexandre Sergio Silva

Escalas de percepção subjetiva de esforço têm sido usadas há bastante tempo para se referir à intensidade de esforço no exercício aeróbio. Somente há pouco tempo foi validada a escala de OMNI-RES para exercício resistido, de modo que sua aplicação em algumas populações ainda é escassa. Assim, o objetivo deste estudo foi avaliar a efetividade da escala de OMNI-RES em mulheres idosas hipertensas. Vinte e uma voluntárias (60.2±3,8 anos, IMC de 28,7±1,2 Kg/m2), realizaram quatro sessões de exercício resistido randomicamente ordenadas. Duas das sessões eram para membros inferiores (MI), com intensidades de 60% e 80% de 15 RM, e as outras duas, para membros superiores (MS), com as mesmas intensidades. As sessões tiveram três séries de 15 repetições e intervalos de 90 segundos. Ao final de cada série, mediu-se a frequência cardíaca e a percepção subjetiva foi referida pelas mulheres. Para a análise estatística, foi utilizado o teste de ANOVA two-way. A frequência cardíaca se apresentou significativamente mais elevada nas sessões a 80% de 15RM em relação a 60% de 15RM em todas as séries, tanto de membros superiores quanto de membros inferiores. Nos protocolos para MI, as mulheres referiram pontuações na escala de OMNI-RES sempre significativamente maiores ao final das três séries, com intensidade de 80% em relação a 60% de 15 RM (6,1±0,1 versus 3,7±0,1; 6,1±0,1 versus 3,8±0,2 e 6,1±0,1 versus 3,9±0,2 para as 1ª, 2ª e 3ª séries a 80 e 60% respectivamente). Nos protocolos para MS a pontuação na escala de OMNI-RES foi igualmente maior para os exercícios a 80% de 1RM em todas as séries (6,1±0,1 versus 3,5±0,1; 6,1±0,1 versus 3,5±0,1 e 6,1±0,1 versus 3,6±0,1 para as 1ª, 2ª e 3ª séries a 80 e 60% respectiva  mente). Os valores de pontuação foram equivalentes à classificação de razoavelmente leve e compatível com treino de endurance muscular segundo a escala de OMNI-RES nos exercícios a 60% de 15 RM e razoavelmente pesado e compatível com treinamento de hipertrofia para a intensidade de 80% de 15RM. Concluiu-se que a escala de OMNI-RES representa adequadamente a intensidade adotada em exercícios resistidos com características de Resistência Muscular Localizada (RML) e hipertrofia em mulheres idosas hipertensas. THE USE OF THE OMNI-RES SCALE IN HYPERTENSIVE ELDERLY abstract Scales of perceived exertion have been used for some time to refer to the intensity of effort in an aerobic exercise. Only recently the OMNI-RES scale has been validated for resistance exercise, as a result of that its application in some populations is still scarce. Thus, the purpose of this study was to evaluate the effectiveness of the OMNI-RES scale in elderly women with hypertension. Twenty one volunteers (60,2 ± 3,8 years, BMI 28,7 ± 1,2 Kg/m2), undertook four sessions of resistance exercise ordered randomly. Two of those sessions were for lower limbs at intensities of 60% and 80% of 15RM, and the other two were for upper limbs with the same intensity. The sessions had 3 sets of 15 repetitions and intervals of 90 seconds. At the end of each series it was measured the heart rate and the subjective perception was reported by the women. For statistical analysis, it was used the two-way ANOVA test. Heart rate was significantly higher in sessions at 80% with 15RM than at 60% with 15RM in all series, both upper limbs and lower limbs. In the protocols for lower limbs, the women always reported significantly higher scores on the OMNI-RES at the end of the three series with an intensity of 80% compared to 60% with 15 RM (6,1 ± 0,1  versus 3,7 ± 0,1; 6,1 ± 0,1 versus 3,8 ± 0,2 and 6,1 ± 0,1 versus 3,9 ± 0,2 for the 1st, 2nd and 3rd grades 80 and 60% respectively). The values in scores were equivalent to the classification of fairly mild consistent with muscle endurance training according to the OMNI-RES scale on the exercises at 60% with 15 RM and fairly heavy and consistent with hypertrophy training at an intensity of 80% with 15RM. It was concluded that the OMNI-RES scale adequately represented the adopted intensity in resistance exercises with features of RML and hypertrophy in hypertensive elderly women.



2020 ◽  
Vol 19 (6) ◽  
pp. 468
Author(s):  
Luana Siqueira Andrade ◽  
Mariana Silva Häfele ◽  
Gustavo Zaccaria Schaun ◽  
Samara Nickel Rodrigues ◽  
Mariana Borba Gomes ◽  
...  

Introduction: The anaerobic threshold (AT) determination is important for individualizing the aerobic training prescription. Objective: To compare and verify the agreement between oxygen uptake (VO2), heart rate (HR), and rate of perceived exertion (RPE) at the AT determined by the ventilatory threshold (VT) and heart rate deflection point (HRDP) methods during an aquatic incremental test in trained older women. Methods: Nine elderly women (64.3 ± 4.4 years) engaged in a water-based training program in the last three months performed a maximum incremental test using the water-based stationary running exercise. The test started at a 70 bpm cadence for 2 min, followed by 15 bpm increments every 2 min until exhaustion. VO2, HR and RPE were measured throughout the test and the AT was identified for each method (i.e., VT and HRDP) by three experienced physiologists. Paired t-test and Bland-Altman analysis were used for data analysis (α=0.05). Results: There was no difference between the VT and HRDP methods (p>0.05) and the Bland-Altman analysis showed acceptable agreement between them for all investigated outcomes (VO2: 22.9 ± 5.1 vs. 23.5 ± 4.7 ml.kg-1.min-1, IC95%: -3-+4 ml.kg-1.min-1; HR: 147 ± 11 vs. 147 ± 11 bpm, IC95%: -9-+8 bpm; RPE: 16 ± 1 vs. 16 ± 1, IC95%: -2-+3). Conclusion: Based on these findings, both HR and RPE determined by the HRDP can be used as valid parameters and practical tools for field prescription of intensity during water-based exercises in elderly trained women.Keywords: exercise, aging, exercise test, hydrotherapy, oxygen consumption. 



1995 ◽  
Vol 79 (3) ◽  
pp. 781-785 ◽  
Author(s):  
F. Leweke ◽  
K. Bruck ◽  
H. Olschewski

According to the most customary exercise protocols, core temperature (Tc) rises in parallel with workload (WL) and experimental time. Physiological variables, however, may be related to each of these factors. To investigate effects of WL independent of experimental time and body temperature, we employed four moderate WLs in 4-min steps between 35 and 65% peak O2 uptake (VO2 peak) in randomized order. To investigate independent effects of body temperature, the same work protocol was performed both after resting in comfortable ambient temperature [control test (Cont)] and after a double cold exposure [precooling test (Pret)], where Tc and the temperature set point are decreased by approximately 0.6 and 0.3 degrees C, respectively. Eight male subjects (24 +/- 1.9 yr, VO2 peak 4.9 +/- 0.5 l/min) worked on a cycle ergometer in a climatic chamber. Heart rate (HR) and breathing frequency (BF), but not preferred pedal rate (PR), were positively correlated to Tc, the slopes amounting to 17 and 3.75 min-1/degree C for HR and BF, respectively. The regression appeared linear over the whole temperature range, and the regression lines were not shifted by precooling. PR was increased by time, but Pret-Cont differences of PR and Tc were inversely correlated (r = -0.50, P < 0.01). The effects of WL were highly significant on HR, O2 uptake, and rate of perceived exertion but not on BF, PR, and sweat rate. The relation of rate of perceived exertion to HR was shifted by precooling.



2000 ◽  
Vol 25 (4) ◽  
pp. 250-261 ◽  
Author(s):  
Claude Lajoie ◽  
Louis Laurencelle ◽  
François Trudeau

Changes in physiological variables during a 60-min continuous test at maximal lactate steady state (MLSS) were studied using highly conditioned cyclists (1 female and 9 males, aged 28.3 ± 8.1 years). To determine power at MLSS, we tested at 8-min increments and interpolated the power corresponding to a blood lactate value of 4 mmol/L. During the subsequent 60-min exercise at MLSS, we observed a sequential increase of physiological parameters, in contrast to stable blood lactate. Heart rate drifted upward from beginning to end of exercise. This became statistically significant after 30 min. From 10-60 min of exercise, a change of + 12.6 ± 3.2 bpm was noted. Significant drift was seen after 30 min for the respiratory exchange ratio, after 40 min for the rate of perceived exertion using the Borg scale, and after 50 min for % [Formula: see text] and minute ventilation. This slow component of [Formula: see text] may be the result of higher recruitment of type II fibers. Key words: Rate of perceived exertion, heart rate, oxygen consumption, blood lactate, cycling



2021 ◽  
Vol 11 (15) ◽  
pp. 6687
Author(s):  
Muhammad Adeel ◽  
Chien-Hung Lai ◽  
Chun-Wei Wu ◽  
Jiunn-Horng Kang ◽  
Jian-Chiun Liou ◽  
...  

Energy expenditure during weight training exercises produces great fitness and health benefits for humans, but few studies have investigated energy expenditure directly during weight training. Therefore, in this study, we aimed to determine energy costs during three training sessions consisting of three different exercises. Ten participants were randomly allocated into two groups: an untrained (n = 5, with no weight training experience) and a trained group (n = 5, with some weight training experience). Each participant completed three training sessions on separate days. While wearing a mask for indirect calorimetric measurements, each participant participated in training sessions conducted with three dumbbell exercises: the bent-over row, deadlift, and lunge. Metabolic equivalents (METs), energy expenditure (EE), respiratory exchange ratio (RER), heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), and rate of perceived exertion (RPE) were measured. The total energy cost was calculated from the oxygen consumption (VO2) during each exercise. Our results showed that the METs of a single training session were 3.3 for the untrained group and 3.4 for the trained group, while the sum of the EE was 683–688 and 779–840 kcal, respectively. The physiological parameters, such as heart rate (p = 0.001 *) for the lunge and rate of perceived exertion (p = 0.005 *) for the bent-over row, changed significantly in both groups. It was concluded that the exercise protocol of this study involved a moderate intensity of 2.4–3.9 METs. The energy cost of each training exercise was between 179 and 291 kcal.



2021 ◽  
Vol 11 (6) ◽  
pp. 329-336
Author(s):  
Mayura P. Deshmukh ◽  
Tushar J. Palekar ◽  
Mrudula V. Sangaonkar

Postural and physiological changes are the distinct changes occurring in the adolescence which contributes fitness level of a child. The biomechanics of these children are highly affected by load carriage while climbing stairs which results in increase in cardio respiratory responses. Evaluation of the cardio respiratory changes is necessary in curbing further damage. In the study we evaluated the effect of backpack load influencing the cardio respiratory measures in stair climbing adolescents. 100 adolescents subjects aged 13-16 yrs were selected for the study, with graded loading for three consecutive days. Heart rate, rate of perceived exertion and respiratory rate were measured pre and post loading. Values of all the parameters on each day were compared. With increase in load, increase in heart rate, rate of perceived exertion and respiratory rate were significant when compared with progression in load. Although the measure which is highly affected amongst these was heart rate. The backpack with 30% load produces the elevation of variables at a greater extent hence there should be curbing of weight of 30% of adolescent’s body weight. Key words: Adolescence, Backpack load, Rate of Perceived Exertion.



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