Physiological responses to maximal 4 s sprint interval cycling using inertial loading: the influence of inter-sprint recovery duration

The purpose of this investigation was to examine the effect of interval (INT) and continuous (CON) cycle exercise on excess post-exercise oxygen consumption (EPOC). Twelve males first completed a graded exercise test for VO2max and then the two exercise challenges in random order on separate days approximately 1 wk apart. The INT challenge consisted of seven 2 min work intervals at 90% VO2max, each followed by 3 min of relief at 30% VO2max. The CON exercise consisted of 30 to 32 min of continuous cycling at 65% VO2max. Gas exchange and heart rate (HR) were measured for 30 min before, during, and for 2 h post-exercise. Three methods were used to analyze post-exercise oxygen consumption and all produced similar results. There were no significant differences in either the magnitude or duration of EPOC between the CON and INT protocols. HR, however, was higher (P < 0.05) while respiratory exchange ratio (RER) was lower (P < 0.05) following INT. These results indicate that when total work was similar, the magnitude and duration of EPOC were similar following CON or INT exercise. The differences in HR and RER during recovery suggest differential physiological responses to the exercise challenges.

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Physiological Responses To Double- And Single-Leg High Intensity Interval Cycling In Healthy Older Adults

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000486097.91288.9b ◽

2016 ◽

Vol 48 ◽

pp. 362

Author(s):

Nicole Gordon ◽

Chris Abbiss ◽

Andrew Maiorana ◽

Jeremiah Peiffer

Keyword(s):

Older Adults ◽

High Intensity ◽

Physiological Responses ◽

Healthy Older Adults ◽

High Intensity Interval ◽

Interval Cycling

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Physiological Responses to an Acute Bout of Sprint Interval Cycling

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0b013e318281575c ◽

2013 ◽

Vol 27 (10) ◽

pp. 2768-2773 ◽

Cited By ~ 18

Author(s):

Eric C. Freese ◽

Nicholas H. Gist ◽

Kirk J. Cureton

Keyword(s):

Physiological Responses ◽

Acute Bout ◽

Interval Cycling

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Ingestion of Carbohydrate Prior to and during Maximal, Sprint Interval Cycling Has No Ergogenic Effect: A Randomized, Double-Blind, Placebo Controlled, Crossover Study

Nutrients ◽

10.3390/nu12082223 ◽

2020 ◽

Vol 12 (8) ◽

pp. 2223

Author(s):

Gerard McMahon ◽

Aaron Thornbury

Keyword(s):

Physiological Responses ◽

Mean Power ◽

Double Blind ◽

Double Blind Placebo ◽

Interval Exercise ◽

Recreational Athletes ◽

Time Interaction ◽

Main Effect ◽

Experimental Trials ◽

Interval Cycling

Carbohydrate (CHO) ingestion may improve intermittent sprint performance in repeated sprint efforts ≤15 s. Yet, evidence for its efficacy on sprint interval durations ~30 s is lacking. The purpose of this study was to investigate the effects of CHO ingestion on maximal sprint interval exercise. Fifteen (n = 15) recreational athletes (13/2 males/females, age 22 ± 2 years; height 176 ± 11 cm; mass 76.8 ± 11.3 kg) volunteered for this randomised, double-blind, placebo-controlled, crossover design. Participants completed two experimental trials (performed 10-days apart) involving the ingestion of an 8% CHO solution or a flavour and appearance-matched placebo (PLA) solution (5 mL/kg/bw), immediately before exercise, and preceding the second interval of four × 30 s bouts of repeated maximal sprint efforts (separated by 3.5 min of passive recovery). Peak and mean power (W) output progressively decreased during the repeated sprints (main effect of time, p < 0.0001), but there were no differences between CHO and PLA during any of the sprints (p > 0.05 for condition main effect and condition × time interaction). Physiological responses (blood lactate, heart rate, oxygen consumption, respiratory exchange ratio and RPE) were also unaltered by CHO ingestion. In conclusion, CHO ingestion does not enhance performance or modulate physiological responses during intermittent maximal, sprint cycling.

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Misophonia: An Evidence-Based Case Report

American Journal of Audiology ◽

10.1044/2020_aja-19-00111 ◽

2020 ◽

Vol 29 (4) ◽

pp. 685-690

Author(s):

C. S. Vanaja ◽

Miriam Soni Abigail

Keyword(s):

Quality Of Life ◽

Case Report ◽

Case History ◽

Pure Tone ◽

Physiological Responses ◽

Evidence Based ◽

Management Option ◽

Pure Tone Audiogram

Purpose Misophonia is a sound tolerance disorder condition in certain sounds that trigger intense emotional or physiological responses. While some persons may experience misophonia, a few patients suffer from misophonia. However, there is a dearth of literature on audiological assessment and management of persons with misophonia. The purpose of this report is to discuss the assessment of misophonia and highlight the management option that helped a patient with misophonia. Method A case study of a 26-year-old woman with the complaint of decreased tolerance to specific sounds affecting quality of life is reported. Audiological assessment differentiated misophonia from hyperacusis. Management included retraining counseling as well as desensitization and habituation therapy based on the principles described by P. J. Jastreboff and Jastreboff (2014). A misophonia questionnaire was administered at regular intervals to monitor the effectiveness of therapy. Results A detailed case history and audiological evaluations including pure-tone audiogram and Johnson Hyperacusis Index revealed the presence of misophonia. The patient benefitted from intervention, and the scores of the misophonia questionnaire indicated a decrease in the severity of the problem. Conclusions It is important to differentially diagnose misophonia and hyperacusis in persons with sound tolerance disorders. Retraining counseling as well as desensitization and habituation therapy can help patients who suffer from misophonia.

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