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  1. Article ; Online: Effects of three weeks base training at moderate simulated altitude with or without hypoxic residence on exercise capacity and physiological adaptations in well-trained male runners.

    Yi, Longyan / Wu, Jian / Yan, Bing / Wang, Yang / Zou, Menghui / Zhang, Yimin / Li, Feifei / Qiu, Junqiang / Girard, Olivier

    PeerJ

    2024  Volume 12, Page(s) e17166

    Abstract: Objectives: To test the hypothesis that 'live high-base train high-interval train low' (HiHiLo) altitude training, compared to 'live low-train high' (LoHi), yields greater benefits on performance and physiological adaptations.: Methods: Sixteen young ...

    Abstract Objectives: To test the hypothesis that 'live high-base train high-interval train low' (HiHiLo) altitude training, compared to 'live low-train high' (LoHi), yields greater benefits on performance and physiological adaptations.
    Methods: Sixteen young male middle-distance runners (age, 17.0 ± 1.5 y; body mass, 58.8 ± 4.9 kg; body height, 176.3 ± 4.3 cm; training years, 3-5 y; training distance per week, 30-60 km.wk
    Results: Peak oxygen uptake and running performance did not differ before and after the intervention in either group (all
    Conclusions: Well-trained runners undertaking base training at moderate simulated altitude for 3 weeks, with or without hypoxic residence, showed no performance improvement, also with unchanged time-domain heart rate variability and exercise-induced arterial hypoxemia responses.
    MeSH term(s) Male ; Humans ; Adolescent ; Altitude ; Exercise Tolerance ; Oxygen Consumption/physiology ; Hypoxia ; Adaptation, Physiological ; Oxygen
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2024-03-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2703241-3
    ISSN 2167-8359 ; 2167-8359
    ISSN (online) 2167-8359
    ISSN 2167-8359
    DOI 10.7717/peerj.17166
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Effect of D-ribose supplementation on delayed onset muscle soreness induced by plyometric exercise in college students

    Cao, Wei / Qiu, Junqiang / Cai, Tianwei / Yi, Longyan / Benardot, Dan / Zou, Menghui

    Journal of the International Society of Sports Nutrition. 2020 Dec., v. 17, no. 1

    2020  

    Abstract: OBJECTIVE: Previous investigations suggest that appropriate nutritional interventions may reduce delayed onset muscle soreness (DOMS). This study examined the effect of D-ribose supplementation on DOMS induced by plyometric exercise. METHODS: For the ... ...

    Abstract OBJECTIVE: Previous investigations suggest that appropriate nutritional interventions may reduce delayed onset muscle soreness (DOMS). This study examined the effect of D-ribose supplementation on DOMS induced by plyometric exercise. METHODS: For the purpose of inducing DOMS, 21 untrained male college students performed a lower-limb plyometric exercise session that involved 7 sets of 20 consecutive frog hops with 90-s of rest between each set. Muscle soreness was measured with a visual analogue scale 1-h before, 24-h after, and 48-h after exercise. Subjects were then randomly placed into the D-ribose group (DRIB, n = 11) and the placebo group (PLAC, n = 10) to assure equivalent BMI and muscle soreness. After a 14-d washout/recovery period, subjects performed the same exercise session, with DRIB ingesting a 200 ml solution containing 15 g D-ribose 1-h before, 1-h, 12-h, 24-h, and 36-h after exercise, and PLAC ingesting a calorically equivalent placebo of the same volume and taste containing sorbitol and β-cyclodextrin. Muscle soreness and isokinetic muscle strength were measured, and venous blood was assessed for markers of muscle damage and oxidative stress 1-h before, 24-h and 48-h after exercise. RESULTS: In DRIB, muscle soreness after 24-h and 48-h in the second exercise session were significantly lower (p < 0.01) than was experienced in the first exercise session. In the second exercise, blood-related markers of muscle soreness, including creatine kinase, lactate dehydrogenase (LDH), myoglobin and malondialdehyde (MDA) in DRIB after 24-h were lower in DRIB after 24-h than in PLAC (MDA, p < 0.05; rest outcomes, p < 0.01). In addition, LDH and MDA in DRIB were significantly lower (p < 0.01) after 24-h in DRIB than in PLAC. No difference was found in isokinetic muscle strength and oxidative stress markers, including superoxide dismutase and total antioxidant capacity, between DRIB and PLAC after 24-h and 48-h. CONCLUSION: D-ribose supplementation reduces muscle soreness, improves recovery of muscle damage, and inhibits the formation of lipid peroxides. Young adult males performing plyometric exercise are likely to realize a DOMS reduction through consumption of D-ribose in 15 g/doses both before (1-h) and after (1-h, 12-h, 24-h, 36-h) exercise. These results suggest that appropriately timed consumption of D-ribose may induce a similar alleviation of exercise-induced DOMS in the general public.
    Keywords antioxidant activity ; blood ; creatine kinase ; exercise ; frogs ; lactate dehydrogenase ; males ; malondialdehyde ; muscle strength ; muscles ; myoglobin ; oxidative stress ; placebos ; sorbitol ; superoxide dismutase ; taste ; young adults
    Language English
    Dates of publication 2020-12
    Size p. 42.
    Publishing place BioMed Central
    Document type Article
    ZDB-ID 2162810-5
    ISSN 1550-2783
    ISSN 1550-2783
    DOI 10.1186/s12970-020-00371-8
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Effect of D-ribose supplementation on delayed onset muscle soreness induced by plyometric exercise in college students.

    Cao, Wei / Qiu, Junqiang / Cai, Tianwei / Yi, Longyan / Benardot, Dan / Zou, Menghui

    Journal of the International Society of Sports Nutrition

    2020  Volume 17, Issue 1, Page(s) 42

    Abstract: Objective: Previous investigations suggest that appropriate nutritional interventions may reduce delayed onset muscle soreness (DOMS). This study examined the effect of D-ribose supplementation on DOMS induced by plyometric exercise.: Methods: For ... ...

    Abstract Objective: Previous investigations suggest that appropriate nutritional interventions may reduce delayed onset muscle soreness (DOMS). This study examined the effect of D-ribose supplementation on DOMS induced by plyometric exercise.
    Methods: For the purpose of inducing DOMS, 21 untrained male college students performed a lower-limb plyometric exercise session that involved 7 sets of 20 consecutive frog hops with 90-s of rest between each set. Muscle soreness was measured with a visual analogue scale 1-h before, 24-h after, and 48-h after exercise. Subjects were then randomly placed into the D-ribose group (DRIB, n = 11) and the placebo group (PLAC, n = 10) to assure equivalent BMI and muscle soreness. After a 14-d washout/recovery period, subjects performed the same exercise session, with DRIB ingesting a 200 ml solution containing 15 g D-ribose 1-h before, 1-h, 12-h, 24-h, and 36-h after exercise, and PLAC ingesting a calorically equivalent placebo of the same volume and taste containing sorbitol and β-cyclodextrin. Muscle soreness and isokinetic muscle strength were measured, and venous blood was assessed for markers of muscle damage and oxidative stress 1-h before, 24-h and 48-h after exercise.
    Results: In DRIB, muscle soreness after 24-h and 48-h in the second exercise session were significantly lower (p < 0.01) than was experienced in the first exercise session. In the second exercise, blood-related markers of muscle soreness, including creatine kinase, lactate dehydrogenase (LDH), myoglobin and malondialdehyde (MDA) in DRIB after 24-h were lower in DRIB after 24-h than in PLAC (MDA, p < 0.05; rest outcomes, p < 0.01). In addition, LDH and MDA in DRIB were significantly lower (p < 0.01) after 24-h in DRIB than in PLAC. No difference was found in isokinetic muscle strength and oxidative stress markers, including superoxide dismutase and total antioxidant capacity, between DRIB and PLAC after 24-h and 48-h.
    Conclusion: D-ribose supplementation reduces muscle soreness, improves recovery of muscle damage, and inhibits the formation of lipid peroxides. Young adult males performing plyometric exercise are likely to realize a DOMS reduction through consumption of D-ribose in 15 g/doses both before (1-h) and after (1-h, 12-h, 24-h, 36-h) exercise. These results suggest that appropriately timed consumption of D-ribose may induce a similar alleviation of exercise-induced DOMS in the general public.
    MeSH term(s) Biomarkers/blood ; Dietary Supplements ; Humans ; Lower Extremity/physiology ; Male ; Muscle Strength ; Myalgia/etiology ; Myalgia/prevention & control ; Oxidative Stress/drug effects ; Plyometric Exercise/adverse effects ; Ribose/administration & dosage ; Time Factors ; Young Adult
    Chemical Substances Biomarkers ; Ribose (681HV46001)
    Language English
    Publishing date 2020-08-10
    Publishing country United States
    Document type Journal Article ; Randomized Controlled Trial
    ZDB-ID 2162810-5
    ISSN 1550-2783 ; 1550-2783
    ISSN (online) 1550-2783
    ISSN 1550-2783
    DOI 10.1186/s12970-020-00371-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Effects of a Short-Term "Fat Adaptation with Carbohydrate Restoration" Diet on Metabolic Responses and Exercise Performance in Well-Trained Runners.

    Che, Kaixuan / Qiu, Junqiang / Yi, Longyan / Zou, Menghui / Li, Zhihui / Carr, Amelia / Snipe, Rhiannon M J / Benardot, Dan

    Nutrients

    2021  Volume 13, Issue 3

    Abstract: Periodized carbohydrate availability can enhance exercise capacity, but the effects of short-term fat adaptation carbohydrate restoration (FACR) diets on metabolic responses and exercise performance in endurance athletes have not been conclusively ... ...

    Abstract Periodized carbohydrate availability can enhance exercise capacity, but the effects of short-term fat adaptation carbohydrate restoration (FACR) diets on metabolic responses and exercise performance in endurance athletes have not been conclusively determined. This study aimed to investigate the effect of a FACR diet on measures of resting metabolism, exercise metabolism, and exercise performance. Well-trained male runners (
    MeSH term(s) Adaptation, Physiological/physiology ; Adolescent ; Adult ; Athletes ; Athletic Performance ; Diet ; Exercise/physiology ; Exercise/psychology ; Glycogen ; Humans ; Male ; Middle Aged ; Oxidation-Reduction ; Surveys and Questionnaires ; Young Adult
    Chemical Substances Glycogen (9005-79-2)
    Language English
    Publishing date 2021-03-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2518386-2
    ISSN 2072-6643 ; 2072-6643
    ISSN (online) 2072-6643
    ISSN 2072-6643
    DOI 10.3390/nu13031033
    Database MEDical Literature Analysis and Retrieval System OnLINE

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