Activity before exercise influences recovery metabolism in the lizard Dipsosaurus dorsalis

2000 ◽  
Vol 203 (12) ◽  
pp. 1809-1815
Author(s):  
D.A. Scholnick ◽  
T.T. Gleeson
Keyword(s):  
Oxygen Consumption ◽  
Metabolic Rate ◽  
Blood Lactate ◽  
Recovery Period ◽  
Maximal Activity ◽  
Warm Up ◽  
Dipsosaurus Dorsalis ◽  
Rate Of Oxygen Consumption ◽  
Lactate Levels ◽  
Blood Lactate Levels

During recovery from even a brief period of exercise, metabolic rate remains elevated above resting levels for extended periods. The intensity and duration of exercise as well as body temperature and hormone levels can influence this excess post-exercise oxygen consumption (EPOC). We examined the influence of activity before exercise (ABE), commonly termed warm-up in endotherms, on EPOC in the desert iguana Dipsosaurus dorsalis. The rate of oxygen consumption and blood lactate levels were measured in 11 female D. dorsalis (mass 41.1 +/− 3.0 g; mean +/− s.e.m.) during rest, after two types of ABE and after 5 min of exhaustive exercise followed by 60 min of recovery. ABE was either single (15 s of maximal activity followed by a 27 min pause) or intermittent (twelve 15 s periods of exercise separated by 2 min pauses). Our results indicate that both single and intermittent ABE reduced recovery metabolic rate. EPOC volumes decreased from 0.261 to 0.156 ml of oxygen consumed during 60 min of recovery when lizards were subjected to intermittent ABE. The average cost of activity (net V(O2) during exercise and 60 min of recovery per distance traveled) was almost 40 % greater in lizards that exercised without any prior activity than in lizards that underwent ABE. Blood lactate levels and removal rates were greatest in animals that underwent ABE. These findings may be of particular importance for terrestrial ectotherms that typically use burst locomotion and have a small aerobic scope and a long recovery period.

Energetic cost of locomotion in the tammar wallaby

1992 ◽  
Vol 262 (5) ◽  
pp. R771-R778 ◽  
Author(s):  
R. V. Baudinette ◽  
G. K. Snyder ◽  
P. B. Frappell
Keyword(s):  
Oxygen Consumption ◽  
Blood Lactate ◽  
Body Mass ◽  
Energy Cost ◽  
Physiological Adaptation ◽  
Energetic Cost ◽  
Cost Of Locomotion ◽  
Lactate Levels ◽  
Energy Cost Of Locomotion ◽  
Blood Lactate Levels

Rates of oxygen consumption and blood lactate levels were measured in tammar wallabies (Macropus eugenii) trained to hop on a treadmill. In addition, the work required to overcome wind resistance during forward locomotion was measured in a wind tunnel. Up to approximately 2.0 m/s, rates of oxygen consumption increased linearly with speed and were not significantly different from rates of oxygen consumption for a quadruped of similar body mass. Between 2.0 and 9.4 m/s, rates of oxygen consumption were independent of hopping speed, and between 3.9 and 7.9 m/s, the range over which samples were obtained, blood lactate levels were low (0.83 +/- 0.13 mmol.min-1.kg-1) and did not increase with hopping speed. The work necessary to overcome drag increased exponentially with speed but increased the energy cost of locomotion by only 10% at the average speed attained by our fast hoppers. Thus, during hopping, the energy cost of locomotion is effectively independent of speed. At rates of travel observed in the field, the estimated energy cost of transport in large macropods is less than one-third the cost for a quadruped of equivalent body mass. The energetic savings associated with this unique form of locomotion may have been an important physiological adaptation, enabling large macropods to efficiently cover the distances necessary to forage in the semiarid landscapes of Australia.

scholarly journals A Comparison of Creatine and Thiamine Supplementation on Heart Rate Recovery and Blood Lactate Levels

2020 ◽  
Vol 2 (1) ◽  
pp. 95-101
Author(s):  
Muhammad Danial ◽  
Hari Setijono ◽  
Nining Widyah Kusnanik
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
Heart Rate Recovery ◽  
Creatine Supplementation ◽  
Male Students ◽  
Active Recovery ◽  
Warm Up ◽  
Passive Recovery ◽  
Lactate Levels ◽  
Blood Lactate Levels

The purpose of the study was to compare the effect of creatine and thiamine supplementation on heart rate recovery (HRR) and blood lactate levels. Twelve male students comprised the two experimental (creatine and thiamine) groups of the study. The creatine group was supplemented with 0,3 g per weight, with 30 ml of water per dose of creatine four times a day, at regular intervals during the day, for 6 consecutive days. The thiamine group received 10 mg per weight just one time 30 minutes after a meal with 150 ml of water at the last supplementation days. After the supplementation period, subjects completed the incremental treadmill after a dynamic warm-up that consisted of walking at 6 km/h for 3 minutes. An initial treadmill speed started with 8,64 km/h for two minutes at 0% gradient followed by an increase of 1,44 km/h every 30 s until subjects reached their volitional exhaustion. After exercise cessation subjects continued with an active recovery of 10.08 km/h for approximately 5 minutes. Heart rate (HR) was regularly assessed from the first 5 min of passive recovery. Blood lactate levels were measured in the 9th min of passive recovery. There were no statistically significant differences in heart rate recovery and blood lactate levels after supplementation, respectively (P > 0.05). Based on these results, it appears that creatine supplementation did not provide a different effect with thiamine on the recovery of heart rate and blood lactate levels.

scholarly journals Investigation of Blood Lactate Levels, Hearth Rates and Technical Performance of Hearing-Impaired Elite Male Greco-Roman Wrestlers

2019 ◽  
Vol 7 (5) ◽  
pp. 27
Author(s):  
Ali Osman Kıvrak ◽  
Şirin Pepe
Keyword(s):  
Blood Lactate ◽  
Recovery Period ◽  
Hearing Impaired ◽  
Negative Effects ◽  
Heart Rates ◽  
Technical Performance ◽  
Greco Roman ◽  
Lactate Levels ◽  
Maximal Effort ◽  
Blood Lactate Levels

This study was conducted with hearing-impaired elite greco-roman wrestlers to determine the relationships and variations in heart rates (HR), blood lactate (La) levels and number of performances during the maximal effort and recovery periods. Voluntary 8 hearing-impaired elite male wrestlers with an average age of 21,75±2,05 years participated into present experiments. Resting heart rates of the athletes were determined before the maximal effort, blood samples were taken for lactate levels, athletes took warm up and stretching exercises for 15 minutes. For maximal effort, athletes performed hip-headlock throw technique for 2 minutes in 3 periods. Proper performances were counted and heart rates were measured in between the periods. To determine recovery characteristics of the athletes after maximal effort, HR and La levels were determined at 3rd, 15th and 30th minutes after maximal effort.Heart rate responds to hip-headlock throws at the end of the 1st period were lower than the heart rates at the end of the 2nd and 3rd periods and heart rates at the end of the 2nd period were lower than the heart rates at the end of the 3rd period (p<0.05). Number of performances in the 1st period was greater than the number of performances in the 2nd and 3rd periods and number of performances in the 2nd period was greater than the number of performances in the 3rd period (p<0.05). HR values increased and number of performances decreased with the progress of periods. There were significant differences in HR and number of performances of the periods (p<0.05).HR and La reached to the maximum levels right after the end of wrestling game and a significant decrease was observed after the 3rd minute of resting (p<0.00). Significant decreases continued at the 15th and 30th minutes of the resting as compared to the 3rd minute (p<0.00). Blood lactate levels also reached to the maximum at the 3rd minute of resting with the effort spend in the 3rd period; then significant decrease was observed at the 15th minute of resting (p<0.00) and significant decreases were also observed in blood lactate levels between the 15th and 30th minutes of resting (p<0.00).It was concluded based on present findings that increasing heart rates negatively influenced number of performances. In other words, tiredness had negative effects on number of performances. Present findings also revealed that during the recovery period, lactate levels decreased quite slower than heart rates. In this sense, it was assumed that La level was the primary criterion of the recovery.

scholarly journals Análisis antropométrico, fisiológico y temporal en jugadoras de pádel de elite (Anthropometric, physiological and temporal analysis in elite female paddle players)

Retos ◽  
2015 ◽  
pp. 107-112
Author(s):  
Francisco Pradas de la Fuente ◽  
Javier Cachón Zagalaz ◽  
David Otín Benedí ◽  
Alejandro Quintas Hijós ◽  
Salas Inmaculada Arraco Castellar ◽  
...  
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
Temporal Structure ◽  
Recovery Period ◽  
Temporal Analysis ◽  
Playing Time ◽  
And Performance ◽  
Lactate Levels ◽  
Simulated Match ◽  
Blood Lactate Levels

El objetivo de este estudio fue determinar en el pádel femenino de elite (PFE) las características antropométricas, la respuesta fisiológica y la estructura temporal producida durante una competición simulada (CS). Seis jugadoras con una experiencia mínima de 4 años en pruebas del circuito oficial fueron seleccionadas para participar en esta investigación. Se registraron diferentes medidas corporales para estudiar el perfil antropométrico: masa corporal, talla, 6 pliegues, 4 perímetros y 3 diámetros. Durante la CS fueron registradas las siguientes variables: i. Frecuencia cardíaca máxima (FCmáx), mínima (FCmín) y media (FCmed) de cada juego, set y total; ii. Niveles lácticos al terminar cada set, al finalizar el partido y en los minutos 2, 4, 6, 8 y 10 del periodo de recuperación; iii. Tiempo de juego total. Los valores antropométricos analizados reflejaron un somatotipo endo-mesomórfico (3.7-4.2-2.5). Los resultados fisiológicos obtenidos durante la CS fueron de 177±9.2 y 151±8.1 lpm para la FCmáx y FCmed respectivamente. Los niveles lácticos máximos alcanzados fueron de 2.4±.6 mmol.l. La duración media de los partidos fue de 56:11±00:38 m. La FCmáx fue de un 76.3% respecto a la máxima hallada en laboratorio. Los niveles de lactacidemia registrados situaron el esfuerzo en la vía metabólica aeróbica con cortos periodos entre el metabolismo aeróbico-anaeróbico. Conocer estos datos resulta de gran utilidad como método de control del rendimiento y de planificación del entrenamiento en el PFE.Palabras clave: composición corporal, somatotipo, lactato, frecuencia cardiaca, estructura temporal.Abstract: The aim of this study was to analyze anthropometric characteristics, physiological response and structure temporal produced in elite female paddle players (EFPP) during a simulated competition (SC). Six EFPP, with four years minimum experience in official circuit competitions, were selected for this study. Different body measures were registered to obtain the anthropometric profile: body mass, height, 6 skinfolds, 4 girths and 3 breadths. During CS the following variables were recorded: i. Maximum heart rate (HRmax), minimum and medium heart reat (HRmin and HRmed) on each game, set and final match; ii. Blood lactate levels after each set and lactate levels in minutes 2, 4, 6, 8, and 10 during recovery period; iii. Total playing time. Anthropometric values showed a mesoendomorfic somatotype (3.7-4.2-2.5). Physiological results showed that average achieved during SC was 177±9.2 and 151±8.1 bmp HRmax and HRmed, respectively. Maximum blood lactate levels showed by EFPP were 2.4±0.6 mMol.L-1. The mean match time was 56:11±00:38 m. Percentage of HRmax during simulated match was 76.3% of maximum value obtained during laboratory test. Blood lactate levels during SC showed that EFPP spent most of the time at aerobic intensities with brief periods at anaerobic intensities. Data obtained in this study provides useful information in EFPP training periodization and performance management.Key words: body composition, somatotype, blood lactate, heart rate, temporal structure.

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