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Inspiratory Muscle Warm-Up Effects on Locomotor Muscle Oxygenation, Dyspnea, and Performance During Exercise at Sea-Level and Simulated Altitude Environments.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Inspiratory Muscle Warm-Up Effects on Locomotor Muscle Oxygenation, Dyspnea, and Performance During Exercise at Sea-Level and Simulated Altitude Environments./
作者:	Gabler, Mikaela.
面頁冊數:	1 online resource (136 pages)
附註:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
標題:	Physiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30423104click for full text (PQDT)
ISBN:	9798379742492

Inspiratory Muscle Warm-Up Effects on Locomotor Muscle Oxygenation, Dyspnea, and Performance During Exercise at Sea-Level and Simulated Altitude Environments.
Gabler, Mikaela.

Inspiratory Muscle Warm-Up Effects on Locomotor Muscle Oxygenation, Dyspnea, and Performance During Exercise at Sea-Level and Simulated Altitude Environments. - 1 online resource (136 pages)

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

Thesis (Ph.D.)--Indiana University, 2023.

Includes bibliographical references

Some evidence shows that an inspiratory muscle warm-up (IMW) could enhance exercise performance; however, the mechanistic basis is unclear. PURPOSE: To examine how an IMW affects the sensory and affective components of dyspnea, exercise performance, and near-infrared spectroscopy (NIRS)-derived metaboreflex effects. METHODS: Thirteen recreationally active individuals (23 ± 5 yr, 5 women) performed a cycling time to exhaustion test (~80-85% V̇O2max) preceded by either IMW (2x30 breaths, 40% maximal inspiratory pressure) or SHAM (2x30 breaths, 15% maximal inspiratory pressure) in normoxic (FIO2 = 0.21) and hypoxic (FIO2 = 0.16) conditions (i.e., 4 trials total). NIRS, dyspnea (i.e., breathing intensity and breathing unpleasantness), and cardiorespiratory parameters were measured throughout. Cardiorespiratory variables were analyzed using the individual isotime method. RESULTS: There were no differences in mean dyspnea responses between IMW and SHAM (p > 0.05). Mean Δ tissue saturation index (TSI) did not reach statistical significance between IMW and SHAM in normoxia (p = 0.110) or hypoxia (p = 0.07). Mean performance was not different in normoxia (p = 0.636) or hypoxia (p = 0.512). In normoxia, V̇E (p = 0.059) and fB (p = 0.056) approached significance with IMW values greater compared to SHAM in the third isotime. CONCLUSION: Group improvements in dyspnea, performance, and ΔTSI were not seen following an IMW. However, we demonstrated positive individual responses and suggest this intervention has interindividual applicability that should not be overlooked.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379742492Subjects--Topical Terms:

518431
Physiology.
Subjects--Index Terms:

DyspneaIndex Terms--Genre/Form:

542853
Electronic books.

Inspiratory Muscle Warm-Up Effects on Locomotor Muscle Oxygenation, Dyspnea, and Performance During Exercise at Sea-Level and Simulated Altitude Environments.
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520 $a Some evidence shows that an inspiratory muscle warm-up (IMW) could enhance exercise performance; however, the mechanistic basis is unclear. PURPOSE: To examine how an IMW affects the sensory and affective components of dyspnea, exercise performance, and near-infrared spectroscopy (NIRS)-derived metaboreflex effects. METHODS: Thirteen recreationally active individuals (23 ± 5 yr, 5 women) performed a cycling time to exhaustion test (~80-85% V̇O2max) preceded by either IMW (2x30 breaths, 40% maximal inspiratory pressure) or SHAM (2x30 breaths, 15% maximal inspiratory pressure) in normoxic (FIO2 = 0.21) and hypoxic (FIO2 = 0.16) conditions (i.e., 4 trials total). NIRS, dyspnea (i.e., breathing intensity and breathing unpleasantness), and cardiorespiratory parameters were measured throughout. Cardiorespiratory variables were analyzed using the individual isotime method. RESULTS: There were no differences in mean dyspnea responses between IMW and SHAM (p > 0.05). Mean Δ tissue saturation index (TSI) did not reach statistical significance between IMW and SHAM in normoxia (p = 0.110) or hypoxia (p = 0.07). Mean performance was not different in normoxia (p = 0.636) or hypoxia (p = 0.512). In normoxia, V̇E (p = 0.059) and fB (p = 0.056) approached significance with IMW values greater compared to SHAM in the third isotime. CONCLUSION: Group improvements in dyspnea, performance, and ΔTSI were not seen following an IMW. However, we demonstrated positive individual responses and suggest this intervention has interindividual applicability that should not be overlooked.
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