scholarly journals Effects of Habitual Smoking on Cardiorespiratory Responses to Sub-maximal Exercise

2004 ◽  
Vol 23 (5) ◽  
pp. 163-169 ◽  
Author(s):  
Yoshio Kobayashi ◽  
Toshiko Takeuchi ◽  
Teruo Hosoi ◽  
Jack A. Loeppky
Keyword(s):  
Maximal Exercise ◽  
Cardiorespiratory Responses ◽  
Habitual Smoking

Consumption of açai (Euterpe oleraceaMart.) functional beverage reduces muscle stress and improves effort tolerance in elite athletes: a randomized controlled intervention study

2015 ◽  
Vol 40 (7) ◽  
pp. 725-733 ◽  
Author(s):  
Jacqueline Carvalho-Peixoto ◽  
Mirian Ribeiro Leite Moura ◽  
Felipe Amorim Cunha ◽  
Pablo Christiano B. Lollo ◽  
Walace David Monteiro ◽  
...  
Keyword(s):  
High Intensity ◽  
Perceived Exertion ◽  
Maximal Exercise ◽  
Metabolic Stress ◽  
Ergogenic Aid ◽  
Treadmill Running ◽  
Time To Exhaustion ◽  
Euterpe Oleracea ◽  
Exercise Tests ◽  
Cardiorespiratory Responses

The study analyzed the effect of an açai (Euterpe oleracea Mart.) functional beverage (AB) on muscle and oxidative stress markers, cardiorespiratory responses, perceived exertion, and time-to-exhaustion during maximal treadmill running. The beverage was developed as an ergogenic aid for athletes and contained 27.6 mg of anthocyanins per dose. Fourteen athletes performed 3 exercise tests: a ramp-incremental maximal exercise test and 2 maximal exercise bouts performed in 2 conditions (AB and without AB (control)) at 90% maximal oxygen uptake.Blood was collected at baseline and after maximal exercise in both conditions to determine biomarkers. AB increased time to exhaustion during short-term high-intensity exercise (mean difference: 69 s, 95% confidence interval = –296 s to 159 s, t = 2.2, p = 0.045), attenuating the metabolic stress induced by exercise (p < 0.05). AB also reduced perceived exertion and enhanced cardiorespiratory responses (p < 0.05). The AB may be a useful and practical ergogenic aid to enhance performance during high-intensity training.

Incremental Exercise Tests in Master Athletes and Untrained Older Adults

2005 ◽  
Vol 13 (3) ◽  
pp. 254-265 ◽  
Author(s):  
Fabien Deruelle ◽  
Cédric Nourry ◽  
Patrick Mucci ◽  
Frédéric Bart ◽  
Jean-Marie Grosbois ◽  
...  
Keyword(s):  
Older Adults ◽  
Maximal Exercise ◽  
Incremental Exercise ◽  
Stage Duration ◽  
Master Athletes ◽  
Exercise Tests ◽  
Fitness Level ◽  
Cardiorespiratory Responses ◽  
Step Duration ◽  
The Impact

This study aimed to analyze the impact of step-duration protocols, 1-min vs. 3-min, on cardiorespiratory responses to exercise, whatever the aerobic-fitness level of sedentary (65.5 ± 2.3 years,n= 8) or highly fit (63.1 ± 3.2 years,n= 19) participants. Heart rate and VO2at the first and second ventilatory thresholds (VT1, VT2) and maximal exercise were not significantly different between the two protocols. In master athletes, the 3-min protocol elicited significantly lower ventilation at VT2and maximal exercise (p< .01). In the latter, breathlessness was also lower at maximal exercise (p< .05) than in sedentary participants. In trained or sedentary older adults, VT1, VT2, and VO2maxwere not influenced by stage duration. According to the lower breathlessness and ventilation, however, the 3-min step protocol could be more appropriate in master athletes. In untrained participants, because the cardiorespiratory responses were similar with the two incremental exercise tests, either of them could be used.

EFFECTS OF HYPERBARIA ON THE CARDIORESPIRATORY RESPONSES TO MAXIMAL EXERCISE

1992 ◽  
Vol 24 (Supplement) ◽  
pp. S156
Author(s):  
D. J. Freund ◽  
J. R. Claybaugh ◽  
J. Holthaus ◽  
G. Luther ◽  
P. B. Bennett
Keyword(s):  
Maximal Exercise ◽  
Cardiorespiratory Responses

Cardiorespiratory Responses of Pilots to Maximal Exercise Loading

1994 ◽  
Vol 24 (1) ◽  
pp. 99
Author(s):  
Choong Hwan Kwak ◽  
Jae Hoon Bae ◽  
Tae Hyung Min ◽  
Hi Myung Park ◽  
Yoo Jin Kim ◽  
...  
Keyword(s):  
Maximal Exercise ◽  
Cardiorespiratory Responses

Physical Exercise Induces Enhancement of Urokinase-Type Plasminogen Activator (u-PA) Levels in Plasma

1991 ◽  
Vol 65 (01) ◽  
pp. 082-086 ◽  
Author(s):  
G Dooijewaard ◽  
A de Boer ◽  
P N C Turion ◽  
A F Cohen ◽  
D D Breimer ◽  
...  
Keyword(s):  
Physical Exercise ◽  
Plasminogen Activator ◽  
Maximal Exercise ◽  
Normal Values ◽  
Bicycle Ergometer ◽  
Tissue Type ◽  
Healthy Male ◽  
Type Plasminogen Activator ◽  
Urokinase Type Plasminogen Activator ◽  
Fibrinolytic Potential

SummaryThe enhancement of the blood fibrinolytic potential by physical exercise is generally attributed to the release of tissue-type plasminogen activator (t-PA) from the vessel wall. In this study we have investigated the possible contribution of urokinase-type plasminogen activator (u-PA).Six healthy male volunteers (age 21–25 years) were screened for their ability to perform maximal exercise for their age-group for 12 min on a bicycle ergometer. Subsequently, on one occasion they were required to remain supine for 2 h (from 8.30 a. m. onwards) and on another they performed maximal exercise (from 9.00 a.m. onwards). During exercise an increase in u-PA antigen and plasmin-activatable pro-urokinase (proUK) activity, concurrent with t-PA antigen and euglobulin t-PA activity, was observed in all six volunteers, while at rest these parameters remained unaffected. Mean u-PA- and t-PA antigen increased, respectively, from 4.2 ± 1.0 ng/ml and 5.8 ± 2.1 ng/ml before exercise to 9.8 ± 3.0 ng/ml and 18.3 ± 3.8 ng/ml (peak). Mean plasminactivatable proUK activity and t-PA activity increased, respectively, from 2.1 ± 0.4 ng/ml and 0.3 ± 0.2 ng/ml before exercise to 4.3 ± 1.7 ng/ml and 7.2 ± 4.0 ng/ml (peak). The increases were statistically significant throughout (paired t-test, pre vs post, antigen P <0.005 and activity P <0.02). After cessation of exercise u-PA and t-PA declined concurrently to normal values with a 50"/" decay in about 5 min. In conclusion, we found that both u-PA antigen and plasmin-activatable proUK activity are, concurrently with t-PA, enhanced upon exercise and, therefore, we consider that u-PA also contributes to – and co-operates in – the enhancement of the blood fibrinolytic potential and activity under these conditions.

Sub-maximal exercise as an indirect bronco-provocation tool to detect early airway dysfunction in asymptomatic smokers

2020 ◽  
Vol 14 (1) ◽  
pp. 05-12
Author(s):  
Ketaki Poorey ◽  
◽  
Manish Lamoria ◽  
Elvy Oommen ◽  
Sushil Sharma ◽  
...  
Keyword(s):  
Maximal Exercise
Sign in / Sign up

Export Citation Format

Share Document