Respostas cardiorrespiratórias e perceptivas para as mesmas velocidades de caminhada e corrida

Monteiro, Walace David; Araújo, Cláudio Gil Soares de

doi:10.1590/s0066-782x2009001000016

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…Although the aforementioned studies have examined muscle oxygenation in both walking and running, we could find no study testing the two gait modes, or movement patterns, at the same speed so as to examine whether gait mode per se, rather than speed, is responsible for differences in muscle oxygenation. This is at odds with the fact that researchers have studied, compared, and found interesting differences in other parameters, such as biomechanical, motor, cardiorespiratory, and perceptual ones, between walking and running at the same speed (e.g., [ 7 , 8 , 9 ]). Adding muscle oxygenation, together with local blood supply and metabolic indices, to these parameters would offer valuable insight and provide a more complete picture of how gait mode affects biological responses to exercise.…”

Section: Introductionmentioning

confidence: 98%

A Comparison of Leg Muscle Oxygenation, Cardiorespiratory Responses, and Blood Lactate between Walking and Running at the Same Speed

Stathopoulos,

Petridou,

Kantouris

et al. 2024

Sports

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It is not known whether different gait modes, or movement patterns, at the same speed elicit differences in muscle oxygen oxygenation, expressed as muscle oxygen saturation (SmO2). Thus, the aim of this study was to compare the oxygenation of two leg muscles (vastus lateralis and gastrocnemius medialis), as well as the heart rate, respiratory gases, and blood lactate between two gait modes (walking and running) of the same speed and duration. Ten men walked and ran for 30 min each at 7 km/h in a random, counterbalanced order. SmO2, heart rate, and respiratory gases were monitored continuously. Blood lactate was measured at rest, at the end of each exercise, and after 15 min of recovery. Data were analyzed by two-way (gait mode × time) or three-way (gait mode × muscle × time) ANOVA, as applicable. Heart rate and oxygen consumption were higher when running compared to walking. SmO2 was lower during exercise compared to rest and recovery, in gastrocnemius medialis compared to vastus lateralis, and in running compared to walking. Blood lactate increased during exercise but did not differ between gait modes. In conclusion, running caused higher deoxygenation in leg muscles (accompanied by higher whole-body oxygen uptake and heart rate) than walking at the same speed (one that was comfortable for both gait modes), thus pointing to a higher internal load despite equal external load. Thus, preferring running over walking at the same speed causes higher local muscle deoxygenation, which may be beneficial in inducing favorable training adaptations.

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Section: Introductionmentioning

confidence: 98%

A Comparison of Leg Muscle Oxygenation, Cardiorespiratory Responses, and Blood Lactate between Walking and Running at the Same Speed

Stathopoulos,

Petridou,

Kantouris

et al. 2024

Sports

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Locomotion Mode Affects the Physiological Strain during Exercise at Walk-Run Transition Speed inElderly Men

et al. 2017

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This study investigated cardiorespiratory responses and rating of perceived exertion (RPE) during prolonged walking and running exercise performed at the walk-run transition speed (WRTS) in untrained healthy elderly men. 20 volunteers (mean±SE, age: 68.4±1.2 yrs; height: 170.0±0.02 cm; body mass: 74.7±2.3 kg) performed the following bouts of exercise: a) maximal cardiopulmonary exercise test (CPET); b) specific protocol to detect WRTS; and c) two 30-min walking and running bouts at WRTS. Expired gases were collected during exercise bouts via the Ultima CardiO metabolic analyzer. Compared to walking, running at the WRTS resulted in higher oxygen uptake (>0.27 L·min), pulmonary ventilation (>7.7 L·min), carbon dioxide output (>0.23 L·min), heart rate (>15 beats·min), oxygen pulse (>0.88 15 mL·beats), energy expenditure (>27 kcal) and cost of oxygen transport (>43 mL·kg·km·bout). The increase of overall and local RPEs with exercise duration was similar across locomotion modes (P<0.001). In all participants, %HRR and %VOR throughout walking and running bouts were around or above the gas exchange threshold. In conclusion, elderly men exhibited higher cardiorespiratory responses during 30-min bouts of running than walking at WRTS. Nevertheless, walking corresponded to relative metabolic intensities compatible with preservation or improvement of cardiorespiratory fitness and should be preferable over running at WRTS in the untrained elderly characterized by poor fitness and reduced exercise tolerance.

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Respostas cardiorrespiratórias e perceptivas para as mesmas velocidades de caminhada e corrida

Abstract: SummaryBackground: : It is possible that different forms of locomotion, when carried out at the same speed, may have a distinct influence on the physiological and perceptual responses to exercise.

Cited by 2 publications

References 22 publications

A Comparison of Leg Muscle Oxygenation, Cardiorespiratory Responses, and Blood Lactate between Walking and Running at the Same Speed

A Comparison of Leg Muscle Oxygenation, Cardiorespiratory Responses, and Blood Lactate between Walking and Running at the Same Speed

Locomotion Mode Affects the Physiological Strain during Exercise at Walk-Run Transition Speed inElderly Men

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