GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    MDPI AG ; 2020
    In:  International Journal of Environmental Research and Public Health Vol. 17, No. 15 ( 2020-07-29), p. 5465-
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 17, No. 15 ( 2020-07-29), p. 5465-
    Abstract: Physiological training responses depend on sympathetic (SNS) and parasympathetic nervous system (PNS) balance. This activity can be measured using heart rate variability (HRV). Such a measurement method can favor individualized training planning to improve athletes’ performance. Recently, HRV-guided training has been implemented both on professional and amateur sportsmen and sportswomen with varied results. There is a dearth of studies involving professional endurance athletes following a defined HRV-guided training protocol. The objectives of the proposed protocol are: (i) to determine changes in the performance of high-level athletes after following an HRV-guided or a traditional training period and (ii) to determine differences in the athletes’ performance after following both training protocols. This will be a 12-week cluster-randomized controlled protocol in which professional athletes will be assigned to an HRV-based training group (HRV-G) or a traditional-based training group (TRAD-G). TRAD-G will train according to a predefined training program. HRV-G training will depend on the athletes’ daily HRV. The maximal oxygen uptake (VO2max) attained in an incremental treadmill test will be considered as the primary outcome. It is expected that this HRV-guided training protocol will improve functional performance in the high-level athletes, achieving better results than a traditional training method, and thus providing a good strategy for coaches of high-level athletes.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2175195-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    In: Revista Española de Cardiología, Elsevier BV, Vol. 72, No. 3 ( 2019-03), p. 233-243
    Type of Medium: Online Resource
    ISSN: 0300-8932
    Language: Spanish
    Publisher: Elsevier BV
    Publication Date: 2019
    detail.hit.zdb_id: 2136443-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Online Resource
    Online Resource
    FapUNIFESP (SciELO) ; 2021
    In:  Revista Brasileira de Medicina do Esporte Vol. 27, No. 2 ( 2021-06), p. 212-217
    In: Revista Brasileira de Medicina do Esporte, FapUNIFESP (SciELO), Vol. 27, No. 2 ( 2021-06), p. 212-217
    Abstract: RESUMO Introdução: A espectroscopia de infravermelho próximo (NIRS) é uma técnica não invasiva usada na avaliação da oxigenação tecidual e no monitoramento da atividade física. Objetivos: Determinar a influência de fatores sexuais, antropométricos e ergoespirométricos sobre a oxigenação muscular do quadríceps e do gastrocnêmio obtidos por NIRS durante um teste de esforço. Métodos: Participaram deste estudo 20 indivíduos saudáveis (10 mulheres). Dois dispositivos Humon Hex® foram colocados no lado dominante dos músculos quadríceps e gastrocnêmio para medir a saturação de oxigênio muscular (SmO2). O teste de esforço foi realizado em uma esteira com controle eletrocardiográfico e mensuração do consumo de oxigênio. A SmO2foi obtida em repouso e depois de esforço máximo durante o teste. Além disso, foram medidos estatura, peso, dobras cutâneas e contorno da cintura. A bioimpedância foi usada para obter os percentuais de massa gorda e massa muscular, que foram usados para calcular a massa gorda relativa (MGR). Resultados: A SmO2de ambos os músculos em repouso é maior em homens do que em mulheres. No esforço máximo, a SmO2do quadríceps é semelhante nos dois os grupos. A SmO2de ambos os músculos é positivamente relacionada com estatura, massa corporal, percentual de massa muscular e contorno da cintura e negativamente relacionada com a porcentagem de massa gorda, MGR e espessura das dobras cutâneas. A correlação negativa entre o percentual de gordura e a saturação de oxigênio é mais evidente nas mulheres. Observou-se que variáveis que quantificam o esforço máximo não estão relacionadas com os valores SmO2, exceto pela correlação entre FCmáx e SmO2do músculo gastrocnêmio no sexo masculino. Conclusão: A SmO2dos atletas recreativos é influenciada pela localização do dispositivo e pela massa gorda dos indivíduos. As maiores diferenças entre os sexos estão no músculo gastrocnêmio. Nível de Evidência II; Estudos diagnósticos - Investigação de um exame para diagnóstico .
    Type of Medium: Online Resource
    ISSN: 1806-9940 , 1517-8692
    Language: English
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2021
    detail.hit.zdb_id: 2122086-4
    SSG: 31
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    In: Retos, Federacion Espanola de Asociaciones de Docentes de Educacion Fisica (FEADEF), , No. 27 ( 2015-03-05), p. 127-130
    Abstract: Los componentes de las cualidades físicas de las personas mayores han sido evaluadas mediante numerosos test. No obstante, no se ha estudiado la influencia de la lateralidad sobre estas cualidades. El objetivo del presente trabajo fue analizar las diferencias en la extensibilidad, la fuerza-resistencia y el equilibrio asociadas a la lateralidad en un grupo de mujeres mayores activas. Sesenta y siete mujeres (media de edad: 66.61 ± 6.63 años) realizaron con ambas extremidades los test de flexión del tronco en silla, juntar las manos tras la espalda, flexión completa de brazo y flamenco. Se encontraron diferencias significativas (p 〈 .001) en los test de flexión del tronco en silla y de juntar las manos tras la espalda, siendo mayores los valores cuando la pierna extendida era la no dominante (-2.35±.83 cm con la pierna dominante y -.15±.83 cm con la no dominante) y cuando el brazo situado arriba era el dominante (-10.49±1.26 cm con el brazo dominante frente a -16.74±1.16 cm con el no dominante), respectivamente. En los test de flexión completa de brazo (brazo dominante y no dominante: 23.25 ± .53 y 23.71 ± .51 repeticiones, respectivamente) y flamenco (pierna dominante y no dominante: 23.83 ± 2.63 y 23.10 ± 2.78 seg, respectivamente) no se encontraron diferencias significativas entre las ambas extremidades. En conclusión, en mujeres mayores activas hay una relación directa entre la lateralidad y la extensibilidad de las extremidades superiores e inferiores; pero no entre la lateralidad y la fuerza-resistencia o el equilibrio.Palabras clave. Condición física, capacidad física, dominancia, adulto mayor, gerontogimnasia.Abstract. Older people’ physical abilities have been evaluated with a lot of tests. However, it has not been studied the influence of laterality on these qualities. The aim of this study was to analyse flexibility, strength-endurance and balance differences based on laterality in a group of active women elderly. Sixty-seven women (mean age: 66.61 ± 6.63 years) did chair-sit and reach, back scratch, arm curl and flamenco tests with both extremities. It was found significant differences (p 〈 .001) in chair-sit and reach and back scratch tests. The values were higher with the non-dominant leg (dominant and non-dominant leg: -2.35±.83 and -.15±.83 cm, respectively) and the dominant arm, (dominant arm: -10.49±1.26 cm; non-dominant arm: -16.74±1.16 cm) respectively. It was not found significant differences in the arm curl (dominant and non-dominant arm: 23.25 ± .53 and 23.71 ± .51 repetitions, respectively) and flamenco tests (dominant and non-dominant leg: 23.83 ± 2.63 and 23.10 ± 2.78 seg, respectively). In conclusion, there is a direct relation between the laterality and the upper and lower extremities extensibility in active women elderly; but there is not it between the laterality and the strength-endurance or balance.Keywords. Physical condition, physical ability, dominance, elderly, senior fitness.
    Type of Medium: Online Resource
    ISSN: 1988-2041 , 1579-1726
    Language: Unknown
    Publisher: Federacion Espanola de Asociaciones de Docentes de Educacion Fisica (FEADEF)
    Publication Date: 2015
    detail.hit.zdb_id: 2562302-3
    SSG: 31
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 17, No. 5 ( 2020-03-10), p. 1805-
    Abstract: High-intensity interval training (HIIT) has similar or better effects than moderate-intensity continuous training (MICT) in increasing peak oxygen consumption (VO2max), however, it has not been studied when HIIT is applied in a circuit (HIICT). The aim of this study was to compare the effects of a HIICT versus MICT on VO2max estimated (VO2max-ES), heart rate (HR) and blood pressure (BP) of middle-aged and older women. A quasi-experimental randomized controlled trial was used. Fifty-four women (67.8 ± 6.2 years) were randomized to either HIICT (n = 18), MICT (n = 18) or non-exercise control group (CG; n = 18) for 18 weeks. Participants in HIICT and MICT trained two days/week (one hour/session). Forty-one participants were assessed (HIICT; n = 17, MICT; n = 12, CG; n = 12). Five adverse events were reported. Cardiorespiratory fitness, HR and BP were measured. The tests were performed before and after the exercise intervention programs. VO2max-ES showed significant training x group interaction, in which HIICT and MICT were statistically superior to CG. Moreover, HIICT and MICT were statistically better than CG in the diastolic blood pressure after exercise (DBPex) interaction. For the systolic blood pressure after exercise (SBPex), HIICT was statistically better than CG. In conclusion, both HIICT and MICT generated adaptations in VO2max-ES and DBPex. Furthermore, only HIICT generated positive effects on the SBPex. Therefore, both training methods can be considered for use in exercise programs involving middle-aged and older women.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2175195-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Online Resource
    Online Resource
    MDPI AG ; 2022
    In:  International Journal of Environmental Research and Public Health Vol. 19, No. 23 ( 2022-11-30), p. 16066-
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 19, No. 23 ( 2022-11-30), p. 16066-
    Abstract: Background: The autonomic nervous system, which is composed of the sympathetic and parasympathetic nervous system, is closely related to the cardiovascular system. The temporal variation between each of the intervals between the consecutive “R” waves of an electrocardiogram is known as heart rate variability. Depending on the type of activity, both systems can be activated, and also influence the interval between “R” waves. Currently, with advancements in technology and electronic devices, photoplethysmography is used. Photoplethysmography detects changes in the intensity of reflected light that allow differentiation between systole and diastole and, therefore, determines the heart rate, its frequency and its variations. In this way, changes in the autonomic nervous system can be detected by devices such as the Max Pulse®. Objective: To determine whether the information provided by Max Pulse® on autonomic balance and stress is modified after intense physical exercise, thereby determining whether there is a relationship with body composition, and also whether there are differences with respect to gender. Materials and Methods: Fifty-three runners (38.9% female) with a mean age of 31.3 ± 8.1 years participated in the study. Two measurements (before and after intense physical effort) were performed with the Max Pulse® device. The flotoplethysmography measurement lasted 3 min, and was performed in the supine position. The exercise test was performed on a treadmill. It was initiated at a speed of 6 and 7 km/h for women and men, respectively. Subjects indicated the end of the test by making a hand gesture when unable to continue the test. Results: Autonomic nervous system activity and mental stress values decreased significantly (p 〈 0.05) in men and women, while autonomic nervous system balance decreased only in women. Physical stress increased (p 〈 0.05) in both sexes. Conclusions: Intense exercise causes changes in variables that assess autonomic nervous system balance and stress, as measured by a device based on photoplethysmography. The changes are evident in both sexes, and are not related to body composition.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2175195-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Online Resource
    Online Resource
    MDPI AG ; 2023
    In:  International Journal of Environmental Research and Public Health Vol. 20, No. 6 ( 2023-03-10), p. 4935-
    In: International Journal of Environmental Research and Public Health, MDPI AG, Vol. 20, No. 6 ( 2023-03-10), p. 4935-
    Abstract: Introduction: Tolerance to breathing in conditions with a decreased oxygen ratio is subject-specific. A normobaric hypoxia tolerance test (NHTT) is performed to assess the ability of each individual, as this may be influenced by genetic or personal factors such as age or gender. The aim of this study is to test the influence of deep breathing on hypoxia tolerance time. Material and methods: A total of 45 subjects (21 parachutists and 24 students) performed two NHTTs at 5050 m altitude (iAltitude). Arterial (SatO2) and muscle (SmO2) oxygen saturation were monitored with the Humon Hex® device. The first NHTT was performed with free breathing, without any instructions; and the second NHTT was performed with wide, slow, diaphragmatic breathing. The NHTT was terminated at the end of 10 min or when a value of less than 83% was obtained. Results: The first NHTT was completed by 38.1% of parachutist and 33.3% of students while the second NHTT was completed by 85.7% and 75%, respectively. In the second NHTT, both parachutists and students had a significantly (p = 0.001) longer duration compared to the first NHTT. SmO2 and SatO2 values also increased significantly (p 〈 0.001) in both groups (p 〈 0.05). Conclusion: Performing controlled diaphragmatic breathing is successful in increasing hypoxia tolerance time and/or SatO2 values.
    Type of Medium: Online Resource
    ISSN: 1660-4601
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2175195-X
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    In: Revista Española de Cardiología (English Edition), Elsevier BV, Vol. 72, No. 3 ( 2019-03), p. 233-243
    Type of Medium: Online Resource
    ISSN: 1885-5857
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2019
    detail.hit.zdb_id: 2592481-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Online Resource
    Online Resource
    Elsevier BV ; 2002
    In:  Apunts. Medicina de l'Esport Vol. 37, No. 139 ( 2002-1), p. 31-39
    In: Apunts. Medicina de l'Esport, Elsevier BV, Vol. 37, No. 139 ( 2002-1), p. 31-39
    Type of Medium: Online Resource
    ISSN: 1886-6581
    Language: Spanish
    Publisher: Elsevier BV
    Publication Date: 2002
    detail.hit.zdb_id: 2404770-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    In: Biology, MDPI AG, Vol. 11, No. 5 ( 2022-04-30), p. 689-
    Abstract: Background: The use of normobaric hypoxia can bring benefits to sports performance because it improves haematological parameters and/or physical activity tests. Our objective was to conduct a systematic review so as to analyse the methods used in hypoxia and to detect its effects on middle- and/or long-distance runners. Methods: Research was conducted using five electronic databases (PubMed, SportDiscus, Cochrane Library, Scopus and PEDro) until December 2021. The methodological quality of the included studies was assessed using the PEDro scale. Results: Having analysed 158 studies, 12 were chosen for the qualitative and quantitative synthesis. A significant improvement on time until exhaustion was detected, and oxygen saturation decreased after the intervention. There were no significant changes in the 3000-metre time trial or in the haematocrit percentage. The changes in percentage of reticulocytes, heart rate, maximal heart rate, lactate concentration and erythropoietin were heterogeneous between the different research studies. Conclusion: short exposure (less than 3 h to normobaric hypoxia significantly increases the time to exhaustion). However, longer exposure times are necessary to increase haemoglobin. Altitude and exposure time are highly heterogeneous in the included studies.
    Type of Medium: Online Resource
    ISSN: 2079-7737
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2661517-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...