Oxygen Uptake Slow Component and the Efficiency of Resistance Exercises

Garnacho-Castaño, Manuel Vicente; Albesa-Albiol, Lluis; Serra-Payá, Noemí; Bataller, María Querol; Pleguezuelos, Eulogio; Cano, Lluis Guirao; Guodemar-Pérez, Jesús; Carbonell, Teresa; Domínguez, Raúl; Maté-Muñoz, José Luis

doi:10.1519/jsc.0000000000002905

Cited by 15 publications

(24 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 1RM was defined as the last load lifted by the subject, completing a knee extension to the required position. The rest period between each attempt was 4 min (Garnacho-Castaño et al, 2018a).…”

Section: Methodsmentioning

confidence: 99%

“…Despite the important role of VO 2 sc in endurance performance (Lucía et al, 2002), respiratory exchange tests for evaluating power output or VO 2 at the LT 1 intensity are not usually applied to resistance exercises in laboratory conditions and, therefore, there is a surprising lack information about VO 2 sc. To date, only one recent study has focused on VO 2 sc in resistance exercises at the LT 1 intensity (Garnacho-Castaño et al, 2018a). Two findings of this study draw the attention.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, the authors demonstrated that the continuous increase in VO 2 and energy expenditure (EE) was linked to a decrease in gross efficiency (GE) (Garnacho-Castaño et al, 2018a). In addition, lower limbs fatigue was detected after constant-load HS test.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, lower limbs fatigue was detected after constant-load HS test. The VO 2 sc could be explained, at least partly, by the variation in GE which assesses the effects of blood alkalinization on the gradual loss of muscle efficiency (Gaesser and Poole, 1996) and progressive fatigue (Garnacho-Castaño et al, 2018a).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Slow Component of Oxygen Uptake and Efficiency in Resistance Exercises: A Comparison With Endurance Exercises

et al. 2019

Self Cite

View full text Add to dashboard Cite

Introduction There is a lack of information regarding the slow component of oxygen uptake (VO 2 sc) and efficiency/economy in resistance exercises despite the crucial role played in endurance performance. Purpose this study aimed to compare the VO 2 sc, efficiency/economy, metabolic, cardiorespiratory responses, rating of perceived effort and mechanical fatigue between cycling and half-squat (HS) exercises during a constant-load test at lactate threshold (LT 1 ) intensity. Methods Twenty-one healthy men were randomly assigned in a crossover design to perform cycle-ergometer or HS tests. The order of the two cycle ergometer tests was an incremental test for determining load-intensity in watts (W) at LT 1 , followed by a constant-load test at the LT 1 intensity. For the three HS tests, the order was a 1RM test to determine the load (kg) corresponding to the 1RM percentages to be used during the second test, incremental HS exercise to establish the load (kg) at the LT 1 intensity, and finally, a constant-load HS test at the LT 1 intensity. A rest period of 48 h between each test was established. During the HS and cycle-ergometer constant-load tests, cardiorespiratory and metabolic responses were recorded. Lower limbs fatigue was determined by a jump test before and after the constant-load tests. Results A significant exercise mode × time interaction effect was detected in VO 2 , heart rate, energy expenditure (EE), gross efficiency (GE), and economy ( p < 0.05). A significant and sustained VO 2 raise was confirmed in HS exercise ( p < 0.05) and a steady-state VO 2 was revealed in cycle-ergometer. A higher GE and economy were obtained in HS test than in cycle-ergometer exercise ( p < 0.001). In both exercises, a non-significant decrease was observed in GE and economy ( p > 0.05). Lower limbs fatigue was only detected after constant-load HS test. Conclusion Although the VO 2 , heart rate and EE responses were higher in cycling exercise, the constant-load HS test induced a greater VO 2 sc and EE raise than the cycling test in a predominantly aerobic metabolism. These results could explain a decrease observed in jump performance only after HS test. GE and economy could benefit from the eccentric phase of the HS exercise.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Slow Component of Oxygen Uptake and Efficiency in Resistance Exercises: A Comparison With Endurance Exercises

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…To further control respiratory response, it might be important to observe the manipulation of RT variables. Previous studies reported higher values of oxygen consumption and pulmonary ventilation with increased volume/duration [ 67 – 69 ], lower rest intervals [ 70 , 71 ], higher movement velocities [ 72 – 74 ], and higher number of repetitions [ 75 , 76 ], especially when effort is matched. Therefore, in order to reduce the cardiorespiratory stress and consequently the risk of contamination due to changes in pulmonary ventilation and the dyspnea associated with training with masks, it would be recommended to train with a lower number of repetitions, higher interval between sets, and controlled movement velocity [ 77 ].…”

Section: Respiratory System and Exercisementioning

confidence: 99%

Resistance Training Safety during and after the SARS-Cov-2 Outbreak: Practical Recommendations

Gentil

Lira

Souza

et al. 2020

BioMed Research International

View full text Add to dashboard Cite

In December of 2019, there was an outbreak of a severe acute respiratory syndrome caused by the coronavirus 2 (SARS-CoV-2 or COVID-19) in China. The virus rapidly spread into the whole world causing an unprecedented pandemic and forcing governments to impose a global quarantine, entering an extreme unknown situation. The organizational consequences of quarantine/isolation are absence of organized training and competition, lack of communication among athletes and coaches, inability to move freely, lack of adequate sunlight exposure, and inappropriate training conditions. The reduction of mobility imposed to contain the advance of the SARS-Cov-2 pandemic can negatively affect the physical condition and health of individuals leading to muscle atrophy, progressive loss of muscle strength, and reductions in neuromuscular and mechanical capacities. Resistance training (RT) might be an effective tool to counteract these adverse consequences. RT is considered an essential part of an exercise program due to its numerous health and athletic benefits. However, in the face of the SARS-Cov-2 outbreak, many people might be concerned with safety issues regarding its practice, especially in indoor exercise facilities, such as gyms and fitness centers. These concerns might be associated with RT impact in the immune system, respiratory changes, and contamination due to equipment sharing and agglomeration. In this current opinion article, we provide insights to address these issues to facilitate the return of RT practices under the new logistical and health challenges. We understand that RT can be adapted to allow its performance with measures adopted to control coronavirus outbreak such that the benefits would largely overcome the potential risks. The article provides some practical information to help on its implementation.

show abstract

The Effect of Fatigue on the Performance of Online Writer Recognition

Sesa-Nogueras¹,

Faundez-Zanuy²,

Garnacho-Castaño³

2021

Cogn Comput

View full text Add to dashboard Cite

Background: The performance of biometric modalities based on things done by the subject, like signature and text-based recognition, may be affected by the subject's state. Fatigue is one of the conditions that can significantly affect the outcome of handwriting tasks. Recent research has already shown that physical fatigue produces measurable differences in some features extracted from common writing and drawing tasks. It is important to establish to which extent physical fatigue contributes to the intra-person variability observed in these biometric modalities and also to know whether the performance of recognition methods is affected by fatigue. Goal: In this paper we assess the impact of fatigue on intra-user variability and on the performance of signature-based and text-based writer recognition approaches encompassing both identification and verification. Methods: Several signature and text recognition methods are considered and applied to samples gathered after different levels of induced fatigue, measured by metabolic and mechanical assessment and, also by subjective perception. The recognition methods are Dynamic Time Warping and Multi Section Vector Quantization, for signatures, and Allographic Text-Dependent Recognition for text in capital letters. For each fatigue level, the identification and verification performance of these methods is measured. Results: Signature shows no statistically significant intra-user impact, but text does. On the other hand, performance of signature-based recognition approaches is negatively impacted by fatigue whereas the impact is not noticeable in text-based recognition, provided long enough sequences are considered.

show abstract

Oxygen Uptake Slow Component and the Efficiency of Resistance Exercises

Cited by 15 publications

References 40 publications

The Slow Component of Oxygen Uptake and Efficiency in Resistance Exercises: A Comparison With Endurance Exercises

The Slow Component of Oxygen Uptake and Efficiency in Resistance Exercises: A Comparison With Endurance Exercises

Resistance Training Safety during and after the SARS-Cov-2 Outbreak: Practical Recommendations

The Effect of Fatigue on the Performance of Online Writer Recognition

Contact Info

Product

Resources

About