Respiratory Quotient Is Correlated With Reductions In Aerobic Exercise Performance Following Repeated 6-hour Hyperoxic Dives

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.

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EFFECT OF SPORTS MEDICINE ON REDUCING BODY FAT PERCENTAGE AND LEAN BODY MASS

Revista Brasileira de Medicina do Esporte ◽

10.1590/1517-8692202127072021_0337 ◽

2021 ◽

Vol 27 (7) ◽

pp. 714-717

Author(s):

Chunyan Fan

Keyword(s):

Aerobic Exercise ◽

Body Fat ◽

Exercise Performance ◽

Performance Indicators ◽

Sports Medicine ◽

The Body ◽

Anaerobic Exercise ◽

Body Fat Percentage ◽

Fat Percentage ◽

Level Of Evidence

ABSTRACT Introduction: Aerobic exercise has begun to be widely recognized as a reasonable means of preventing fat and losing weight. Scholars have confirmed that sports can help the human body lose weight and lose fat. Objective: This article measures the exercise performance indicators of subjects in different body fat percentage groups and studies the relationship between body fat percentage and exercise performance indicators. Methods: The study uses experimental methods to determine the percentage of body fat of the subjects. After physical exercise and aerobic exercise, the volunteers were tested for aerobic capacity indicators. Results: The body fat percentage of physically inactive persons was negatively correlated with aerobic and anaerobic exercise capacity indexes. Conclusion: The mechanism of aerobic exercise in weight loss treatment has the effect of promoting lipolysis and regulating blood lipid metabolism. At the same time, it has a significant influence on the number and activity of fat cells. Level of evidence II; Therapeutic studies - investigation of treatment results.

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Aerobic Exercise Performance

Kinanthropometry and Exercise Physiology ◽

10.4324/9781315385662-13 ◽

2018 ◽

pp. 318-352 ◽

Cited By ~ 2

Author(s):

Andrew M. Jones ◽

Mark Burnley ◽

Anni Vanhatalo

Keyword(s):

Aerobic Exercise ◽

Exercise Performance

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Separate and Combined Influences of Environmental Heat and Altitude on Self-Paced Aerobic Exercise Performance

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000536168.92076.41 ◽

2018 ◽

Vol 50 (5S) ◽

pp. 330-331 ◽

Cited By ~ 1

Author(s):

Karleigh E. Bradbury ◽

John H. Sellers ◽

Charles S. Fulco ◽

Adam J. Luippold ◽

Katherine M. Mitchell ◽

...

Keyword(s):

Aerobic Exercise ◽

Exercise Performance

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The Effects of Quadriceps Kinesio Taping on Aerobic and Anaerobic Exercise Performance in Healthy Participants: A Randomized Controlled Study

International Journal of Athletic Therapy & Training ◽

10.1123/ijatt.2014-0137 ◽

2016 ◽

Vol 21 (2) ◽

pp. 32-38 ◽

Cited By ~ 4

Author(s):

Neslihan Duruturk ◽

Nihan Ozunlu Pekyavas ◽

Atakan Yρlmaz ◽

Metin Karatas

Keyword(s):

Aerobic Exercise ◽

Exercise Capacity ◽

Exercise Performance ◽

Athletic Performance ◽

Quadriceps Muscle ◽

Anaerobic Exercise ◽

Randomized Controlled ◽

Aerobic Exercise Capacity ◽

Aerobic And Anaerobic ◽

Healthy Participants

Objective:Aerobic and anaerobic exercise capacities are important components of athletic performance. The use of Kinesio Taping® (KT) as a supplementary treatment in athletic settings has increased in the recent years. KT can facilitate muscle contraction, which may be useful for improving performance. The purpose of this study was to determine whether the application of KT to the quadriceps muscle has any effect on anaerobic and aerobic performance in young healthy individuals.Design:Randomized, controlled, double-blind clinical study.Setting:Baskent University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation.Patients:Thirty-two healthy male participants were randomly assigned to either the KT group or a sham KT (SKT) group.Interventions:The KT muscle facilitation technique was applied to the quadriceps muscle bilaterally and measurements were taken 45 min later to ensure full adhesion.Main Outcome Measures:The Wingate cycle ergometer test was used to assess peak anaerobic power (peak AnP, in Watts) and exercise capacity (Watt/kg), while the 6-minute walk test (6MWT) was used to assess aerobic exercise capacity of the participants. Comparisons between groups were performed using the nonparametric Mann-Whitney U test, while those between baseline and posttaping used the nonparametric Wilcoxon test.Results:No significant difference was found between the two groups in the aerobic or anaerobic test parameters (p > .05). Within the groups, a significant improvement in time factors in peak AnP (929.7 2 ± 184.37 W to 1043.49 ± 224.42 W) was found only in the KT group (p = .028) and no other parameter was significantly different (p > .05).Conclusions:KT applied to the quadriceps muscle can positively improve anaerobic exercise performance and athletic performance capacity. However, KT did not affect aerobic capacity. Further research is needed to show that KT can improve and support anaerobic and aerobic exercise capacity in healthy participants or athletes.

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Alterations in Aerobic Exercise Performance and Gait Economy Following High Intensity Dynamic Stepping Training in Subacute Stroke

Journal of Neurologic Physical Therapy ◽

10.1097/npt.0000000000000168 ◽

2017 ◽

Vol 41 (1) ◽

pp. 20

Keyword(s):

Aerobic Exercise ◽

Exercise Performance ◽

High Intensity ◽

Subacute Stroke ◽

Gait Economy

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Effects of Antioxidant Supplementation on Exercise Performance in Acute Normobaric Hypoxia

International Journal of Sport Nutrition and Exercise Metabolism ◽

10.1123/ijsnem.2013-0118 ◽

2014 ◽

Vol 24 (2) ◽

pp. 227-235 ◽

Cited By ~ 3

Author(s):

Christian Mariacher ◽

Hannes Gatterer ◽

Joachim Greilberger ◽

Radoslav Djukic ◽

Michaela Greilberger ◽

...

Keyword(s):

Aerobic Exercise ◽

Exercise Performance ◽

Beta Carotene ◽

Cycling Performance ◽

Normobaric Hypoxia ◽

Alpha Tocopherol ◽

Maximal Heart Rate ◽

Exercise Tests ◽

Double Blind ◽

Concentrate Supplementation

Background/Objectives:To compare the effects of a 3-week supplementation between two different mixtures of antioxidants and placebo on aerobic exercise performance in acute normobaric hypoxia.Subjects/Methods:Seventeen subjects were randomly assigned in a double-blind fashion to receive a broad-based antioxidants supplement containing beta-carotene, ascorbic acid, d-alpha-tocopherol-succinate, N-acetylcysteine, riboflavin, zinc, and selenium (antioxidant capsule group [AO group]), or a combination of alpha-ketoglutaric acid (α-KG) and 5-hydroxymethylfurfural (5-HMF; CYL concentrate supplementation group [CS group]), or placebo (PL group). Before and after supplementation, subjects performed two incremental cycle-exercise tests until exhaustion. The first test was conducted under normoxic conditions (LA, FiO2 of 20.9%, ~547 m) and the second after the 3-week supplementation period under normobaric hypoxic conditions (AHA, FiO2 of 12.9%, ~4300m).Results:In CS peak cycling performance (peak power) declined from LA to AHA 7.3% (90% CI: 2.2–12.4) less compared with PL (p = .04) and 6.7% (90%CI: 3.2–10.2) less compared with AO (p = .03). Better maintenance of aerobic exercise capacity in CS was associated with an attenuated reduction in maximal heart rate in hypoxia.Conclusions:Aerobic exercise performance was less impaired in acute normobaric hypoxia after 3 weeks with supplementation of α-KG and 5-HMF compared with a broad-based antioxidants supplement or PL.

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