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Kinesiological Analysis of Stationary Running Performed in Aquatic and Dry Land Environments

100%

Lima Alberton C., Santana Pinto S., Silva Azenha N. A. d., Cadore E. L., Peikriszwili Tartaruga M., Brasil B., Martins Kruel L. F.

Journal of Human Kinetics

2015

vol. 49

issue 1

5-14

The purpose of the present study was to analyze the electromyographic (EMG) signals of the rectus femoris (RF), vastus lateralis (VL), semitendinosus (ST) and short head of the biceps femoris (BF) during the performance of stationary running at different intensities in aquatic and dry land environments. The sample consisted of 12 female volunteers who performed the stationary running exercise in aquatic and dry land environments at a submaximal cadence (80 beats·min-1 controlled by a metronome) and at maximal velocity, with EMG signal measurements from the RF, VL, ST and BF muscles. The results showed a distinct pattern between environments for each muscle examined. For the submaximal cadence of 80 beats·min-1, there was a reduced magnitude of the EMG signal in the aquatic environment, except for the ST muscle, the pattern of which was similar in both environments. In contrast to the submaximal cadence, the pattern of the EMG signal from all of the muscles showed similar magnitudes for both environments and phases of movement at maximal velocity, except for the VL muscle. Therefore, the EMG signals from the RF, VL, ST and BF muscles of women during stationary running had different patterns of activation over the range of motion between aquatic and dry land environments for different intensities. Moreover, the neuromuscular responses of the lower limbs were optimized by an increase in intensity from submaximal cadence to maximal velocity.

Mechanical Work and Long-Distance Performance Prediction: the Influence of Allometric Scaling

100%

Peikriszwili Tartaruga M., Brisswalter J., Mota C. B., Alberton C. L., Gomeñuka N. A., Peyré-Tartaruga L. A.

Journal of Human Kinetics

2013

vol. 38

73-82

The purpose of this study was to examine the effect of allometric scaling on the relationship between mechanical work and long-distance running performance in recreational runners. Fourteen recreational long-distance runners (male, mean ± SD - age: 29 ± 7 years; body mass: 70.0 ± 10.2 kg; body height: 1.71 ± 0.07 m; maximal oxygen uptake: VO2max 52.0 ± 4.9 ml·kg-1·min-1) performed two tests: a continuous incremental test to volitional exhaustion in order to determine VO2max, and a 6-minute running submaximal test at 3.1 m·s-1, during which segments in the sagittal plane were recorded using a digital camera and the internal (Wint), external (Wext) and total (Wtot) mechanic work, in J.kg-1·m-1, was subsequently calculated. The results indicated a significant correlation between mechanical work and performance, however, the strongest correlations were observed when allometric exponents were used (respectively for Wint, Wext and Wtot; non allometric vs. allometric scaling defined by literature (0.75) or determined mathematically (0.49): r = 0.38 vs. r = 0.44 and r = 0.50; r = 0.80 vs. r = 0.83 and r = 0.82; r = 0.70 vs. r = 0.77 and r = 0.78). These results indicate that mechanical work could be used as a predictor of recreational long-distance performance and an allometric model may improve this prediction.

Rating of Perceived Exertion and Physiological Responses in Water-Based Exercise

84%

Santana Pinto S., Lima Alberton C., Zaffari P., Lusa Cadore E., Kanitz A. C., Veiga Liedtke G., Peikriszwili Tartaruga M., Martins Kruel L. F.

Journal of Human Kinetics

2015

vol. 49

issue 1

99-108

The aim of the present study was to relate the overall rating of perceived exertion (RPE-overall) with cardiorespiratory and neuromuscular variables during stationary running with the elbow flexion/extension performed with water-floating equipment. The sample consisted of eleven women that performed the water-based exercise at submaximal cadences. The heart rate, oxygen uptake, ventilation, and electromyographic signal (EMG) from biceps brachii (%EMG BB), triceps brachii (%EMG TB), biceps femoris (%EMG BF) and rectus femoris (%EMG RF) muscles were measured during the exercise, and the overall RPE was measured immediately following its completion. The Pearson product-moment linear correlation was used to investigate associations between the variables analyzed in the present study. Significant relationships were observed between the RPE-overall and all the cardiorespiratory variables, with the r values ranging from 0.60 to 0.70 (p<0.05). In addition, the RPE-overall showed a significant (p<0.05) relationship with %EMG BB (r=0.55) and %EMG BF (r=0.50). These results suggest an association between the RPE-overall with all cardiorespiratory and two neuromuscular variables during the execution of a water-based aerobic exercise using water-floating equipment.

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3 Journal of Human Kinetics

2 2015

1 2013

3 Peikriszwili Tartaruga M.

2 Lima Alberton C.

2 Martins Kruel L. F.

2 Santana Pinto S.

1 Alberton C. L.

1 Brasil B.

1 Brisswalter J.

1 Cadore E. L.

1 Gomeñuka N. A.

1 Kanitz A. C.

1 Lusa Cadore E.

1 Mota C. B.

1 Peyré-Tartaruga L. A.

1 Silva Azenha N. A. d.

1 Veiga Liedtke G.

1 Zaffari P.

Search results

Kinesiological Analysis of Stationary Running Performed in Aquatic and Dry Land Environments

Mechanical Work and Long-Distance Performance Prediction: the Influence of Allometric Scaling

Rating of Perceived Exertion and Physiological Responses in Water-Based Exercise