scholarly journals Gender differences in residual effect of prior drop jumps on oxygen uptake during heavy cycling exercise

Medicina ◽  
2017 ◽  
Vol 53 (5) ◽  
pp. 331-338 ◽  
Author(s):  
Neringa Baranauskienė ◽  
Sandra Kilikevičienė ◽  
Loreta Stasiulė ◽  
Genuvaitė Civinskienė ◽  
Arvydas Stasiulis
Keyword(s):  
Gender Differences ◽  
Oxygen Uptake ◽  
Residual Effect ◽  
Cycling Exercise ◽  
Drop Jumps

scholarly journals The Residual Effect of Prior Drop Jumps on Cardio Respiratory Parameters during Moderate Cycling in Young Women

2018 ◽  
Vol 3 (86) ◽  
Author(s):  
Neringa Baranauskienė ◽  
Arvydas Stasiulis
Keyword(s):  
Oxygen Uptake ◽  
Respiratory System ◽  
Muscle Soreness ◽  
Residual Effect ◽  
Delayed Onset Muscle Soreness ◽  
Cycling Exercise ◽  
System Parameters ◽  
Delayed Onset ◽  
Respiratory Parameters ◽  
Drop Jumps

Research background and hypothesis. Unaccustomed prior drop jumps (PDJ) can cause muscle damage with  concomitant delayed onset muscle soreness (DOMS) and decreased concentric contraction performance efficiency,  but  the  residual  effect  of  PJD  on  cardio  respiratory  system  parameters  during  moderate  cycling  exercise  (MC) remains equivocal. We suppose that DOMS, induced of PDJ, has altered cardio respiratory system parameters during  MC exercises.Research aim of the study was to assess the residual effect of 100 prior drop jumps on cardio respiratory system  parameters kinetics during moderate cycling exercise. Research methods. On four different days 10 women performed one increasing and three (control, 45 min and  24 h after 100 drop jumps) MC (Ergoline-800, Germany) exercises. The cadence of cycling was 70 rpm. The oxygen  uptake (2 oV& ), carbon dioxide output (2 co V & ); minute ventilation ( E V ) and heart rate (HR) were continuously recorded  during MC. Subjects rated their perceived exertions at the end of MC, and the DOMS was rated 24 h after PDJ. Research results. After 24 h the subjects felt moderate DOMS (5.0(2.79)) according to 10 point scale. The 2 oV& ; 2 co V & and HR kinetics were unaltered by moderate DOMS after 45 minutes and 24 hours, but  E V tended to increase 45  minutes after PDJ. The negative correlation between DOMS and  2 oV&  (r = –0.52) was observed.Discussion and conclusion. Prior drop jumps seem not to have significant residual effect on cardio respiratory  parameters kinetics after 45 minutes or 24 hours, but they tend to increase  E V  after 45 minutes of recovery during  moderate cycling exercise in young women.Keywords: delayed onset muscle soreness, oxygen uptake, constant load.

scholarly journals The Residual Effect of Prior Drop Jumps on EMG Parameters of Thigh Muscles during Moderate and Heavy Cycling

2018 ◽  
Vol 2 (85) ◽  
Author(s):  
Neringa Baranauskienė ◽  
Loreta Stasiulė ◽  
Sandra Raubaitė ◽  
Arvydas Stasiulis
Keyword(s):  
Muscle Soreness ◽  
Vastus Lateralis ◽  
Residual Effect ◽  
Vastus Medialis ◽  
Mean Square ◽  
Cycling Exercise ◽  
Delayed Onset ◽  
Concentric Exercise ◽  
Thigh Muscles ◽  
Drop Jumps

Research  background  and  hypothesis.  Prior  eccentric  or  eccentric-concentric  exercise  induces  long  lasting muscle fatigue and delayed onset muscle soreness (DOMS). Moreover, the surface electromyograme sEMG amplitude increases under fatigue conditions. We suppose that prior eccentric – concentric exercise, inducing DOMS, increases EMG amplitude of thigh muscles during constant cycling exercises.Research aim of the study was to assess the residual effect of 100 prior drop jumps (PDJ) on the sEMG of m. vastus lateralis and m. vastus medialis during moderate and heavy intensity cycling exercises. Research methods. On four different days 10 female students performed one increasing and three (control, 45  min and 24 h after 100 drop jumps) moderate and heavy cycling (Ergoline-800, Germany) exercises. The cadence of cycling was 70 rpm. The sEMG of right thigh m. vastus lateralis and m. vastus medialis were continuously recorded during moderate and heavy cycling exercise. Creatine kinasis activity was measured and DOMS was rated 24 h after PDJ. Research results. After 24 h the subjects felt moderate DOMS (5.0 (2.79)) according to 10 point scale. The sEMG root mean square amplitude of m. vastus lateralis significantly increased 24 h after PDJ during moderate, but unaltered during heavy cycling exercise under fatigue conditions (45 min and 24 h after PDJ).Discussion and conclusion. Prior drop jumps seem to have significant residual (within 24 h of recovery) effect on EMG of thigh muscles during moderate cycling exercise in female students.Keywords: delayed onset muscle soreness, constant load, EMG root mean square.

Cutaneous blood flow during exercise is higher in endurance-trained humans

2000 ◽  
Vol 88 (2) ◽  
pp. 738-744 ◽  
Author(s):  
Ricardo G. Fritzsche ◽  
Edward F. Coyle
Keyword(s):  
Blood Flow ◽  
Oxygen Uptake ◽  
Forearm Blood Flow ◽  
Peak Oxygen Uptake ◽  
Metabolic Rates ◽  
Esophageal Temperature ◽  
Cutaneous Blood Flow ◽  
Cycling Exercise ◽  
C 50 ◽  
Cutaneous Blood

This study determined whether cutaneous blood flow during exercise is different in endurance-trained (Tr) compared with untrained (Untr) subjects. Ten Tr and ten Untr men (62.4 ± 1.7 and 44.2 ± 1.8 ml ⋅ kg− 1 ⋅ min− 1, respectively; P < 0.05) underwent three 20-min cycling-exercise bouts at 50, 70, and 90% peak oxygen uptake in this order, with 30 min rest in between. The environmental conditions were neutral (∼23–24°C, 50% relative humidity, front and back fans at 2.5 m/s). Because of technical difficulties, only seven Tr and seven Untr subjects completed all forearm blood flow and laser-Doppler cutaneous blood flow (CBF) measurements. Albeit similar at rest, at the end of all three exercise bouts, forearm blood flow was ∼40% higher in Tr compared with Untr subjects (50%: 4.64 ± 0.50 vs. 3.17 ± 0.20, 70%: 6.17 ± 0.61 vs. 4.41 ± 0.37, 90%: 6.77 ± 0.62 vs. 5.01 ± 0.37 ml ⋅ 100 ml− 1 ⋅ min− 1, respectively; n = 7; all P < 0.05). CBF was also higher in Tr compared with Untr subjects at all relative intensities ( n = 7; all P < 0.05). However, esophageal temperature was not different in Tr compared with Untr subjects at the end of any of the aforementioned exercise bouts (50%: 37.8 ± 0.1 vs. 37.9 ± 0.1°C, 70%: 38.1 ± 0.1 vs. 38.1 ± 0.1°C, and 90%: 38.8 ± 0.1 vs. 38.6 ± 0.1°C, respectively). We conclude that a higher CBF may allow Tr subjects to achieve an esophageal temperature similar to that of Untr, despite their higher metabolic rates and thus higher heat production rates, during exercise at 50–90% peak oxygen uptake.

scholarly journals Prior moderate and heavy exercise accelerate oxygen uptake and cardiac output kinetics in endurance athletes

2009 ◽  
Vol 106 (5) ◽  
pp. 1553-1563 ◽  
Author(s):  
Azmy Faisal ◽  
Keith R. Beavers ◽  
Andrew D. Robertson ◽  
Richard L. Hughson
Keyword(s):  
Cardiac Output ◽  
Oxygen Uptake ◽  
Phase Ii ◽  
Exercise Bout ◽  
Endurance Athletes ◽  
Heavy Exercise ◽  
Cycling Exercise ◽  
Warm Up ◽  
Exercise Onset ◽  
Finger Pulse

Cardiorespiratory interactions at the onset of dynamic cycling exercise are modified by warm-up exercises. We tested the hypotheses that oxygen uptake (V̇o2) and cardiac output (Q̇) kinetics would be accelerated at the onset of heavy and moderate cycling exercise by warm-up. Nine male endurance athletes (peak V̇o2: 60.5 ± 3.2 ml·min−1·kg−1) performed multiple rides of two different 36-min cycling protocols, involving 6-min bouts at moderate and heavy intensities. Breath-by-breath V̇o2 and beat-by-beat stroke volume (SV) and Q̇, estimated by Modelflow from the finger pulse, were measured simultaneously with kinetics quantified from the phase II time constant (τ2). One novel finding was that both moderate (M) and heavy (H) warm-up bouts accelerated phase II V̇o2 kinetics during a subsequent bout of heavy exercise (τ2: after M = 22.5 ± 2.7 s, after H = 22.1 ± 2.9 vs. 26.2 ± 3.2 s; P < 0.01). Q̇ kinetics in heavy exercise were accelerated by both warm-up intensities (τ2: M = 22.0 ± 4.1 s, H = 23.8 ± 5.6 s vs. 27.4 ± 7.2 s; P < 0.05). During moderate exercise, prior heavy-intensity warm-up (one or two bouts) accelerated V̇o2 kinetics and elevated Q̇ at exercise onset, with no changes in Q̇ kinetics. A second novel finding was a significant overshoot in the estimate of SV from Modelflow in the first minutes of each moderate and heavy exercise bout. These findings suggest that the acceleration of V̇o2 kinetics during heavy exercise was enabled by the acceleration of Q̇ kinetics, and that rapid increases in Q̇ at the onset of moderate and heavy exercise might result, in part, from an overshoot of SV.

Influence of Body Composition, Hemoglobin Concentration, and Cardiac Size and Function of Gender Differences in Maximal Oxygen Uptake in Prepubertal Children

CHEST Journal ◽  
2003 ◽  
Vol 124 (4) ◽  
pp. 1494-1499 ◽  
Author(s):  
Agnés Vinet ◽  
Stéphane Mandigout ◽  
Stéphane Nottin ◽  
LongDang Nguyen ◽  
Anne-Marie Lecoq ◽  
...  
Keyword(s):  
Gender Differences ◽  
Body Composition ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Hemoglobin Concentration ◽  
Prepubertal Children ◽  
And Function

Effects of 4- and 8-h preexercise feedings on substrate use and performance

1989 ◽  
Vol 67 (5) ◽  
pp. 2066-2071 ◽  
Author(s):  
M. G. Flynn ◽  
T. J. Michaud ◽  
J. Rodriguez-Zayas ◽  
C. P. Lambert ◽  
J. B. Boone ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Work Output ◽  
Total Work ◽  
Cycling Exercise ◽  
Blood Samples ◽  
Substrate Use ◽  
Feeding Trials ◽  
The Subject ◽  
And Performance

Seven well-trained male cyclists were studied during 105 min of cycling (65% of maximal oxygen uptake) and a 15-min “performance ride” to compare the effects of 4- and 8-h preexercise carbohydrate (CHO) feedings on substrate use and performance. A high CHO meal was given 1) 4-h preexercise (M-4), 2) 8-h preexercise (M-8), 3) 4-h preexercise with CHO feedings during exercise (M-4CHO), and 4) 8-h preexercise with CHO feedings during exercise (M-8CHO). Blood samples were obtained at 0, 15, 60, 105, and 120 min and analyzed for lactate, glucose, insulin, and glycerol. Total work output during the performance ride was similar for the M-4 (217,893 +/- 13,348 N/m) and M-8 trials (216,542 +/- 13,905) and was somewhat higher for the M-4CHO (223,994 +/- 14,387) and M-8CHO (224,702 +/- 15,709) trials (P = 0.059, NS). Glucose was significantly elevated throughout exercise, and insulin levels were significantly elevated at 15 and 60 min during M-4CHO and M-8CHO compared with M-4 and M-8 trials. Glycerol levels were significantly lower during the CHO feeding trials compared with placebo and were not significantly different during exercise when the subject had fasted an additional 4 h. The results of this study suggest that when preexercise meals are ingested 4 or 8 h before submaximal cycling exercise, substrate use and performance are similar.

scholarly journals Cycling exercise to resist electrically stimulated antagonist increases oxygen uptake in males: Pilot study

2013 ◽  
Vol 50 (4) ◽  
pp. 545 ◽  
Author(s):  
Hiroo Matsuse ◽  
Naoto Shiba ◽  
Yoshio Takano ◽  
Shin Yamada ◽  
Hiroshi Ohshima ◽  
...  
Keyword(s):  
Pilot Study ◽  
Oxygen Uptake ◽  
Cycling Exercise
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