Effects of Preferred and Nonpreferred Music on Continuous Cycling Exercise Performance

2010 ◽  
Vol 110 (1) ◽  
pp. 257-264 ◽  
Author(s):  
Priscila M. Nakamura ◽  
Gleber Pereira ◽  
Camila B. Papini ◽  
Fábio Y. Nakamura ◽  
Eduardo Kokubun
Keyword(s):  
Exercise Performance ◽  
Cycling Exercise ◽  
Continuous Cycling

Niacin supplementation impairs exercise performance

2021 ◽  
Author(s):  
Greggory R. Davis ◽  
Arnold G. Nelson
Keyword(s):  
Body Weight ◽  
Resistance Exercise ◽  
Aerobic Exercise ◽  
Exercise Performance ◽  
Respiratory Exchange Ratio ◽  
Time To Exhaustion ◽  
Total Work ◽  
Cycling Exercise ◽  
Exercise Time ◽  
Performance Effects

Abstract. Several pre-workout supplements contain niacin, although the exercise performance effects of niacin are poorly understood. The purpose of the present study was to examine the performance effects of niacin versus caffeine as a pre-workout supplement. Twenty-five untrained males were recruited to complete three identical ramped aerobic cycling exercise trials. Participants were administered caffeine (CA) at 5 mg/kg body weight, 1000 mg niacin (NI), or a methylcelluloce placebo (PL) supplement prior to each trial. NI treatment induced significantly higher respiratory exchange ratio (RER) during exercise compared to the CA treatment, but not the PL treatment (PL=0.87±0.08, NI=0.91±0.08, CA=0.87±0.08; p=0.02). Similarly, exercise time to exhaustion (in minutes) was significantly different between the NI treatment and the CA treatment, but not the PL treatment (PL=27.45±4.47, NI=26.30±4.91, CA=28.76±4.86; p<0.01). Habitual caffeine use (p=0.16), habitual aerobic exercise (p=0.60), and habitual resistance exercise (p=0.10) did not significantly affect RER. Similarly, habitual caffeine use (p=0.72), habitual aerobic exercise (p=0.08), and habitual resistance exercise (p=0.39) did not significantly affect total work performed. The elevated RER and decreased time to exhaustion in the NI treatment suggests limited lipid availability during exercise and impaired exercise performance.

scholarly journals Priming anodal transcranial direct current stimulation attenuates short interval intracortical inhibition and increases time to task failure of a constant workload cycling exercise

2021 ◽  
Author(s):  
Simranjit K Sidhu
Keyword(s):  
Endurance Exercise ◽  
Direct Current ◽  
Exercise Performance ◽  
Transcranial Direct Current Stimulation ◽  
Short Interval ◽  
Intracortical Inhibition ◽  
Corticospinal Excitability ◽  
Cycling Exercise ◽  
Fatigue Cycling ◽  
Task Failure

Transcranial direct current stimulation (tDCS), a non-invasive neuromodulatory technique has been shown to increase the excitability of targeted brain area and influence endurance exercise performance. However, tDCS-mediated interaction between corticospinal excitability, GABAA mediated intracortical inhibition and endurance exercise performance remains understudied. In two separate sessions, twelve subjects performed fatigue cycling exercise (80% peak power output) sustained to task failure in a double-blinded design, following either ten minutes of anodal tDCS (atDCS) or sham. Corticospinal excitability and short interval intracortical inhibition (SICI) were measured at baseline, post neuromodulation and post-exercise using paired-pulse transcranial magnetic stimulation (TMS) in a resting hand muscle. There was a greater a decrease in SICI (P < 0.05) post fatigue cycling with atDCS priming compared to sham. Time to task failure (TTF) was significantly increased following atDCS compared to sham (P < 0.05). These findings suggest that atDCS applied over the motor cortex can augment cycling exercise performance; and this outcome may be mediated via a decrease in the excitability of GABAA inhibitory interneurons.

scholarly journals The effect of an airflow restriction mask (ARM) on metabolic, ventilatory, and electromyographic responses to continuous cycling exercise

PLoS ONE ◽  
2020 ◽  
Vol 15 (8) ◽  
pp. e0237010 ◽  
Author(s):  
João Francisco Barbieri ◽  
Arthur Fernandes Gáspari ◽  
Cassia Lopes Teodoro ◽  
Leonardo Motta ◽  
Luz Albany Arcila Castaño ◽  
...  
Keyword(s):  
Cycling Exercise ◽  
Continuous Cycling

scholarly journals Pedaling Performance Changing of Elite Cyclists Is Mainly Determined by the Fatigue of Hamstring and Vastus Muscles during Repeated Sprint Cycling Exercise

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Lejun Wang ◽  
Qineng Shao ◽  
Guoqiang Ma ◽  
Mingxin Gong ◽  
Wenxin Niu ◽  
...  
Keyword(s):  
Exercise Performance ◽  
Lower Limb ◽  
Muscle Group ◽  
Limb Muscle ◽  
Cycling Exercise ◽  
Lower Limb Muscles ◽  
Repeated Sprint ◽  
Grey Relational Grade ◽  
Sprint Cycling ◽  
Grey Relational

Repeated sprint cycling is an effective training method in promoting athletic performance of cyclists, which may induce severe fatigue of lower limb muscles. However, the relationship between the fatigue of each lower limb muscles and the changing of exercise performance remains unclear. In this study, ten cyclist volunteers performed a series of 6-second sprints with 24-s recovery for five times. Power, cadence, and EMG mean frequency (MNF) of each lower limb muscle group for every 2-second epoch, as well as the grey relational grade between exercise performance and MNF of each lower limb muscle group during the whole process were calculated. It has been found that MNF of Rectus femoris (RF), Vastus (VAS), Gastrocnemius (GAS), and the hamstring muscle group (HAM) showed significant negative correlation with the increase in both sprint number and intrasprint duration time, while the grey relational grade of HAM and VAS was higher than that of other muscles. The results demonstrated that the exercise performance of both power and cadence were most closing related to the fatigue degree of HAM and VAS during repeated sprint cycling exercise.

scholarly journals Spirulina supplementation improves oxygen uptake in arm cycling exercise

2020 ◽  
Vol 120 (12) ◽  
pp. 2657-2664
Author(s):  
Tom Gurney ◽  
Owen Spendiff
Keyword(s):  
Oxygen Uptake ◽  
Exercise Performance ◽  
High Intensity ◽  
Submaximal Exercise ◽  
Crossover Design ◽  
Incremental Test ◽  
Cycling Exercise ◽  
Arm Cycling ◽  
Arm Crank Ergometer ◽  
Double Blinded

Abstract Purpose Spirulina has previously been reported to improve high-intensity exercise performance and hemoglobin. However, spirulina’s effect on arm cycling exercise has yet to be investigated. The purpose of this study was to investigate the responses of spirulina supplementation on hemoglobin and on oxygen uptake, RER and HR during seated arm cycling exercise. Methods In a double-blinded randomized crossover design, eleven males untrained in arm cycling ingested 6 g/day of spirulina or placebo for seven days. Seated on the Arm Crank Ergometer, each participant performed a baseline V̇O2max test, and then after supplementation, 2 × 30-min submaximal exercise bouts corresponding to 55% of their V̇O2max, followed by an incremental test to fatigue. A seven-day wash-out period was required between conditions. Oxygen uptake, RER and HR were measured continuously during exercise and hemoglobin measured prior to exercise after both conditions. Results Spirulina significantly (p < 0.05) increased Hb in comparison to Placebo (144.1 g/l ± 10.5 Vs 154.5 g/l ± 6.9). After spirulina supplementation, during the 30-min exercise bouts, oxygen uptake and HR were significantly lower (2170 ml/min ± 173 Vs 2311 ml/min ± 189 and 154 bpm ± 14 Vs 149 bpm ± 17), RER was not significantly different. In comparison to placebo, Spirulina significantly increased oxygen uptake at time of fatigue (34.10 ml/min/kg ± 6.03 Vs 37.37 ml/min/kg ± 5.98). Time taken to fatigue was not different. Conclusion Spirulina supplementation significantly reduces oxygen uptake and HR during arm cycling submaximal exercise, allowing for an increased oxygen uptake during an incremental test to fatigue.

scholarly journals Grey Relational Analysis of Lower Limb Muscle Fatigue and Pedalling Performance Decline of Elite Athletes during a 30-Second All-Out Sprint Cycling Exercise

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Lejun Wang ◽  
Hua Yang ◽  
Guoqiang Ma ◽  
Mingxin Gong ◽  
Wenxin Niu ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Exercise Performance ◽  
Lower Limb ◽  
Muscle Group ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Cycling Exercise ◽  
Performance Decline ◽  
Sprint Cycling ◽  
Grey Relational

The 30-second all-out sprint cycling exercise is a classical sport capacity evaluation method, which may cause severe lower limb muscle fatigue. However, the relationship between lower limb muscle fatigue and the decline in exercise performance during 30-second sprint cycling remains unclear. In this study, ten cyclists volunteered to participate in a 30-second all-out sprint cycling while power, cadence, and surface electromyographic (EMG) signals of eight lower limb muscles were recorded during the exercise. EMG mean frequency (MNF) of each lower limb muscle group was computed for every 3-second epoch based on wavelet packet transformation. Grey relational grades between pedalling performance and the EMG MNF of each lower limb muscle group during the whole process were calculated. The results demonstrated that EMG MNF of the rectus femoris (RF), vastus (VAS), gastrocnemius (GAS), and tibialis anterior (TA) progressively tired during a 30-second all-out sprint cycling exercise. Of the muscles evaluated, the degree of fatigue of TA showed the greatest association with exercise performance decline, whereas the muscle fatigue of RF, VAS, and GAS also significantly impacted exercise performance during a 30-second all-out sprint cycling exercise.

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