scholarly journals Oxygen Uptake and Heart Rate Kinetics after Different Types of Resistance Exercise

2014 ◽  
Vol 42 (1) ◽  
pp. 235-244 ◽  
Author(s):  
Jeferson M. Vianna ◽  
Francisco Z. Werneck ◽  
Emerson F. Coelho ◽  
Vinicius O. Damasceno ◽  
Victor M. Reis
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Resistance Exercise ◽  
Bench Press ◽  
Recovery Period ◽  
Body Height ◽  
Post Exercise ◽  
Squat Exercise ◽  
Vo2 Kinetics ◽  
Different Types

Abstract Oxygen uptake (VO2) and heart rate (HR) kinetics after exercise are important indicators of fitness and cardiovascular health. However, these variables have been little investigated in resistance exercise (RE). The current study compared post-exercise kinetics of VO2 and the HR among different types of REs. The study included 14 males (age: 26.5±5.4 years, body mass: 80.1±11.4 kg, body height: 1.77±0.07 m, fat content: 11.3±4.6%) with RE experience. Dynamic muscle strength was measured using one repetition maximum (1RM) with regard to the half-squat, bench press, pull-down, and triceps pushdown exercises. The participants performed a maximum number of repetitions at 80% of 1RM for each exercise, separated by a recovery period of 60 minutes. VO2 was measured using ergospirometry. VO2 and HR kinetics were assessed using the time constant of the recovery curves, and excess oxygen consumption (EPOC) was calculated afterward. Significant differences were not observed across the exercises with regard to VO2 kinetics. However, the half-squat exercise elicited a greater EPOC than the bench press and triceps pushdown exercises (p<.05). HR kinetics was slower for the half-squat exercise than for the other exercises (p<.05). These findings confirm that the type of RE influences both the cardiac autonomic response post-exercise and EPOC, but not VO2 kinetics

scholarly journals Oxygen Uptake On-Kinetics during Low-Intensity Resistance Exercise: Effect of Exercise Mode and Load

2019 ◽  
Vol 16 (14) ◽  
pp. 2524 ◽  
Author(s):  
Victor M. Reis ◽  
Eduardo B. Neves ◽  
Nuno Garrido ◽  
Ana Sousa ◽  
André L. Carneiro ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Resistance Exercise ◽  
Bench Press ◽  
Slow Component ◽  
Kinetics Parameters ◽  
Leg Extension ◽  
Low Intensity ◽  
Vo2 Kinetics ◽  
Exercise Effect ◽  
Constant Work Rate

Oxygen uptake (VO2) kinetics has been analyzed through mathematical modeling of constant work-rate exercise, however, the exponential nature of the VO2 response in resistance exercise is currently unknown. The present work assessed the VO2 on-kinetics during two different sub maximal intensities in the inclined bench press and in the seated leg extension exercise. Twelve males (age: 27.2 ± 4.3 years, height: 177 ± 5 cm, body mass: 79.0 ± 10.6 kg and estimated body fat: 11.4 ± 4.1%) involved in recreational resistance exercise randomly performed 4-min transitions from rest to 12% and 24% of 1 repetition maximum each, of inclined bench press (45°) and leg extension exercises. During all testing, expired gases were collected breath-by-breath with a portable gas analyzer (K4b2, Cosmed, Italy) and VO2 on-kinetics were identified using a multi-exponential mathematical model. Leg extension exercise exhibited a higher R-square, compared with inclined bench press, but no differences were found in-between exercises for the VO2 kinetics parameters. VO2 on-kinetics seems to be more sensitive to muscle related parameters (upper vs. lower body exercise) and less to small load variations in the resistance exercise. The absence of a true slow component indicates that is possible to calculate low-intensity resistance exercise energy cost based solely on VO2 measurements.

scholarly journals Physiological Exercise and Post‐Exercise Effects of Inverse Sequences of Combined Bench‐Step Aerobics and Resistance Exercise

2021 ◽  
Vol 77 (1) ◽  
pp. 61-70
Author(s):  
Catarina Abrantes ◽  
Susana Martins ◽  
Ana Pereira ◽  
Fernando Policarpo ◽  
Isabel Machado ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Body Temperature ◽  
Oxygen Uptake ◽  
Resistance Exercise ◽  
Diastolic Blood Pressure ◽  
Perceived Exertion ◽  
Post Exercise ◽  
Exercise Blood Pressure ◽  
Type Of Exercise

Abstract The purpose of this study was to compare the effects of using inverse sequences of combined bench-step aerobics and resistance exercise on cardiorespiratory, hemodynamic and perceptual variables during exercise and one-hour post-exercise. The tested sequences were bench-step aerobics immediately before and immediately after resistance exercise. Thirteen apparently healthy and physically active women (age = 21.9 ± 6.1 years, body height = 160 ± 0.1 cm, body mass = 58.8 ± 7.5 kg, estimated fat mass = 17.2 ± 2.0% and estimated maximal oxygen uptake = 37.5 ± 2.6 mL∙kg-1∙min-1) performed a 20-minute bench-step aerobics routine, immediately before (STEP_RES) and after (RES_STEP) resistance exercise. Oxygen uptake and heart rate were continuously measured, systolic and diastolic blood pressure, body temperature and perceived exertion were measured at rest, immediately after each type of exercise and at 15, 30, 45 and 60 min after exercise. When resistance exercise was performed first (RES_STEP), oxygen uptake was higher (23.2 ± 3.9 vs. 20.5 ± 4.8 mL∙kg-1∙min-1), but the heart rate (164.5 ± 9.1 vs. 173.9 ± 11.7 bpm) and body temperature (36.5 ± 0.4 vs. 37.6 ± 0.6 ºC) were lower. In both sequences, the type of exercise performed first was pointed out with a lower perceived exertion or lower perceived intensity. Exercise and 60-min post-exercise blood pressure had a similar response in both sequences, and systolic blood pressure along with diastolic blood pressure were lower than pre-exercise from 30 min until 60 min post-exercise. The results suggest that the sequence affected oxygen uptake and perceived exertion during exercise and that this total workload, despite the sequence, promoted a post-exercise blood pressure decrease in normotensive participants.

scholarly journals Refined Multiscale Fuzzy Entropy to Analyse Post-Exercise Cardiovascular Response in Older Adults With Orthostatic Intolerance

Entropy ◽  
2018 ◽  
Vol 20 (11) ◽  
pp. 860 ◽  
Author(s):  
Marcos Hortelano ◽  
Richard Reilly ◽  
Francisco Castells ◽  
Raquel Cervigón
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Orthostatic Intolerance ◽  
Cardiovascular Response ◽  
Recovery Period ◽  
The Elderly ◽  
Fuzzy Entropy ◽  
Post Exercise ◽  
And Gender ◽  
Risk Factors For Falls

Orthostatic intolerance syndrome occurs when the autonomic nervous system is incapacitated and fails to respond to the demands associated with the upright position. Assessing this syndrome among the elderly population is important in order to prevent falls. However, this problem is still challenging. The goal of this work was to determine the relationship between orthostatic intolerance (OI) and the cardiovascular response to exercise from the analysis of heart rate and blood pressure. More specifically, the behavior of these cardiovascular variables was evaluated in terms of refined composite multiscale fuzzy entropy (RCMFE), measured at different scales. The dataset was composed by 65 older subjects, 44.6% (n = 29) were OI symptomatic and 55.4% (n = 36) were not. Insignificant differences were found in age and gender between symptomatic and asymptomatic OI participants. When heart rate was evaluated, higher differences between groups were observed during the recovery period immediately after exercise. With respect to the blood pressure and other hemodynamic parameters, most significant results were obtained in the post-exercise stage. In any case, the symptomatic OI group exhibited higher irregularity in the measured parameters, as higher RCMFE levels in all time scales were obtained. This information could be very helpful for a better understanding of cardiovascular instability, as well as to recognize risk factors for falls and impairment of functional status.

Effects of Carbohydrate Mouth Rinsing on Upper Body Resistance Exercise Performance

2020 ◽  
Vol 30 (1) ◽  
pp. 42-47
Author(s):  
Ben M. Krings ◽  
Brandon D. Shepherd ◽  
Hunter S. Waldman ◽  
Matthew J. McAllister ◽  
JohnEric W. Smith
Keyword(s):  
Heart Rate ◽  
Resistance Exercise ◽  
Exercise Performance ◽  
Perceived Exertion ◽  
Bench Press ◽  
Upper Body ◽  
Aerobic Performance ◽  
Ratings Of Perceived Exertion ◽  
Mouth Rinsing ◽  
Repetitions To Failure

Carbohydrate mouth rinsing has been shown to enhance aerobic exercise performance, but there is limited research with resistance exercise (RE). Therefore, the purpose of this investigation was to examine the effects of carbohydrate mouth rinsing during a high-volume upper body RE protocol on performance, heart rate responses, ratings of perceived exertion, and felt arousal. Recreationally experienced resistance-trained males (N = 17, age: 21 ± 1 years, height: 177.3 ± 5.2 cm, mass: 83.5 ± 9.3 kg) completed three experimental sessions, with the first serving as familiarization to the RE protocol. During the final two trials, the participants rinsed a 25-ml solution containing either a 6% carbohydrate solution or an artificially flavored placebo in a randomized, counterbalanced, and double-blinded fashion. The participants rinsed a total of nine times immediately before beginning the protocol and 20 s before repetitions to failure with the exercises bench press, bent-over row, incline bench press, close-grip row, hammer curls, skull crushers (all completed at 70% one-repetition maximum), push-ups, and pull-ups. Heart rate, ratings of perceived exertion, and felt arousal were measured at the baseline and immediately after each set of repetitions to failure. There were no differences for the total repetitions completed (carbohydrate = 203 ± 25 repetitions vs. placebo = 201 ± 23 repetitions, p = .46, Cohen’s d = 0.10). No treatment differences were observed for heart rate, ratings of perceived exertion, or felt arousal (p > .05). Although carbohydrate mouth rinsing has been shown to be effective in increasing aerobic performance, the results from this investigation show no benefit in RE performance in resistance-trained males.

Effects of a Sustained Muscular Contraction on Human Intraocular Pressure

1974 ◽  
Vol 47 (3) ◽  
pp. 249-257 ◽  
Author(s):  
D. F. Marcus ◽  
H. F. Edelhauser ◽  
M. G. Maksud ◽  
R. L. Wiley
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Intraocular Pressure ◽  
Recovery Period ◽  
Maximum Voluntary Contraction ◽  
Isometric Exercise ◽  
Lactate Concentration ◽  
Post Exercise ◽  
Blood Samples ◽  
Hand Grip

1. Normal subjects performed fatiguing static hand-grip contraction at tensions of 20% and 55% of their maximum voluntary contraction (MVC). Intraocular pressure (IOP) was measured by applanation tonometry before, during and after the isometric exercise. Forearm blood samples were taken from the antecubital vein in both the exercised and non-exercised arm before and 2 min post-exercise for measurement of plasma lactate, osmolality, Pv,o2, Pv,co2 and pH. 2. During hand grip the heart rate and blood pressure increased significantly, whereas the IOP remained unchanged from control in both the 20% and 55% MVC experiments. 3. In the recovery period heart rate and blood pressure returned to control values within 3 min and the IOP decreased significantly from control in both the 20% and 55% MVC experiments. 4. When an occlusion cuff was inflated on the exercising arm just before release of the 55% MVC grip, the decreased IOP could be delayed until the cuff was released. 5. Post-exercise blood samples showed elevated lactate concentrations and Pv,o2 and decreased pH in the exercised arm; however, the values remained unchanged in the non-exercised arm. The decreased IOP after exercise may be related to an increased blood lactate concentration.

scholarly journals A Study of Skin-Close Heat and Moisture with Different Types of Backpacks in Cycling

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 86
Author(s):  
Mats Ainegren ◽  
Frank I. Michel ◽  
Robert Klauer ◽  
Andrey Koptyug ◽  
Mikael Bäckström ◽  
...  
Keyword(s):  
Heart Rate ◽  
Relative Humidity ◽  
Oxygen Uptake ◽  
Aerodynamic Drag ◽  
Force Plate ◽  
Mountain Bike ◽  
Different Types ◽  
Series Of Experiments ◽  
Lower Temperature ◽  
Heat And Moisture

The aim of this project was to evaluate effects of backpacks with different design intended for use during cycling on skin-close temperature and relative humidity, oxygen uptake, heart rate and aerodynamic drag. Seven subjects took part in the study cycling on a mountain bike mounted on a “smart trainer” placed on a force plate in a wind tunnel. Three series of experiments were carried out: without backpack, with conventional backpack and with a backpack having innovative rear panel design. As hypothesized, the results showed that an innovatively designed backpack with the ducts deflecting part of the airflow towards some areas of the user’s back provided lower temperature and relative humidity for the microclimate compared to a conventional backpack without airflow channels. Further, reference tests without any backpack resulted in the lowest temperature and humidity. However, no differences were found between the three tests for oxygen uptake, heart rate and aerodynamic drag.

scholarly journals THE EFFECTS OF TWO DIFFERENT TYPES OF RESISTANCE EXERCISE ON EXCESS POST-EXERCISE OXYGEN CONSUMPTION

1992 ◽  
Vol 24 (Supplement) ◽  
pp. S76 ◽  
Author(s):  
K. A. Burrhus ◽  
J. L. Lettunich ◽  
M. L. Casey ◽  
J. H. Wilmore
Keyword(s):  
Oxygen Consumption ◽  
Resistance Exercise ◽  
Post Exercise ◽  
Different Types

scholarly journals Cardiovascular response to strength training is more affected by intensity than volume in healthy subjects

2018 ◽  
Vol 11 (3) ◽  
Author(s):  
OC Moreira ◽  
CEP Oliveira ◽  
DG Matos ◽  
SF Silva ◽  
RC Hickner ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Resistance Exercise ◽  
Systolic Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Healthy Subjects ◽  
Bench Press ◽  
Cardiovascular Response ◽  
Rate Pressure Product ◽  
Repetition Maximum

Objective: To determine and compare the cardiovascular responses to three resistance exercise protocols with different volumes and loads. Methods: The study included 15 healthy subjects, experienced in resistance training, who underwent supine bench press exercise with three different volumes and loads separated by 48 hours, with a crossover model: a) 4 repetitions at 90% of one repetition maximum (4/90%), b) 8 repetitions at 80% of one repetition maximum (8/80%), and c) 15 repetitions at 65% of one repetition maximum (15/65%). Immediately following each protocol, measures of heart rate, systolic and diastolic blood pressure were performed, and were used to calculate the rate pressure product. Results: The 4/90% protocol resulted in an increase in heart rate (Δ = 84.57%; effect size [ES] = 0.31), systolic blood pressure (Δ = 24.03%; ES = 0.42), diastolic blood pressure (Δ = 8.47%; ES = 0.27) and rate pressure product (Δ = 129.65%; ES = 0.54). The 8/80% protocol resulted in changes on: heart rate (Δ = 74.94%; ES = 0.57), systolic blood pressure (Δ = 20.67%; ES = 0.27), diastolic blood pressure (Δ = 6.91%; ES = 0.15) and rate pressure product (Δ = 111.78%; ES = 0.48). The 15/65% protocol resulted in alterations on: heart rate (Δ = 66.77%; ES = 0.39), systolic blood pressure (Δ = 16.85%; ES = 0.35), diastolic blood pressure (Δ = 3.38%; ES = 0.13) and rate pressure product (Δ = 96.41%; ES = 0.30). Increases in all variables pre to post resistance exercise were observed for all protocols (p < 0.05). When comparing the three different protocols, it was found that the heart rate (p < 0.001), systolic blood pressure (p = 0.034) and rate pressure product (p < 0.001), were more elevated in the 4/90% compared to the 15/65%. Conclusion: The bench press exercise performed with low volume and high intensity promotes a more pronounced cardiovascular response compared to the same exercise performed with high volume and low intensity.      

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