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1.
J Marriage Fam ; 86(3): 633-654, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38682083

RESUMO

Objective: This study investigates longitudinal associations between providing care to grandchildren and cognitive functioning. It also examines heterogeneity in these relationships. Background: Grandchild caregiving may support older adults' cognitive functioning by providing social engagement and emotional meaning. However, studies caution that time- intensive or custodial grandchild caregiving can take a toll on grandparents. The cognitive health implications of grandchild caregiving may thus depend on contexts including time spent providing care and living arrangements. They may also vary across sociodemographic groups and have greater effects on older adults who are more vulnerable to cognitive decline. Method: Data came from the 1998-2016 waves of the Health and Retirement Study (HRS) and represented over 11,000 U.S. adults age 50+. Using linear growth curve and dynamic panel models, the analysis explored relationships between level of grandchild care and cognitive functioning over time and across sociodemographic, family, work and health characteristics. Results: Those providing 100-199, 200-499 or 500+ hours of care to grandchildren had better cognitive functioning than non-caregivers regardless of whether they lived with grandchildren. Positive links between grandchild caregiving and cognition were stronger for lower income, non-working, and unpartnered adults and grew with age and functional limitations. Conclusion: These findings suggest that providing care to minor grandchildren may help support cognitive functioning as adults age. They also support the hypothesis that more vulnerable or isolated groups of older adults may benefit the most from grandchild caregiving.

2.
Adv Physiol Educ ; 47(4): 684-693, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-37498550

RESUMO

The COVID-19 pandemic required an emergency shift to remote teaching. Despite their limited previous experience with online or hybrid teaching, our cohort of kinesiology faculty (n = 112) had high confidence in their ability to deliver quality educational experiences for their students during the pandemic. With support from their institutions, technology departments, and teaching and learning centers, faculty developed new skills and organizational strategies. To achieve this, 81% of faculty reported needing extra course preparation time to deliver high-quality remote teaching, with 51% needing up to 5 extra hours per week per course. There is a fraction of faculty from this study excited about the prospect of teaching online in the future. These newfound online teaching skills should be leveraged to modernize course offerings in kinesiology departments, supporting student recruitment, retention, and success.NEW & NOTEWORTHY The COVID-19 pandemic caused temporary and permanent changes to higher education, specifically kinesiology programs. This article highlights the resiliency of faculty in kinesiology programs, how they adapted, where they felt supported, and what they hope to bring with them into their future pedagogy practices.


Assuntos
COVID-19 , Pandemias , Humanos , Docentes , Estudantes , Escolaridade
3.
Eur J Popul ; 39(1): 8, 2023 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-36890348

RESUMO

Marriage is protective against suicide across most populations, including for persons of different ethnicities and immigrant backgrounds. However, the well-being benefits of marriage are contingent upon marital characteristics-such as conflict and quality-that may vary across spousal dyads with different immigration backgrounds. Leveraging Swedish register data, we compare suicide mortality among married persons on the basis of their and their spouse's immigration backgrounds. We find that relative to those in a native Swede-Swede union, Swedish men married to female immigrants and immigrant women married to native men are at higher risk of death by suicide, while immigrants of both genders who are married to someone from their birth country have a lower risk of suicide mortality. The findings support hypotheses about the strains that may be encountered by those who intermarry, as well as the potential selection of individuals into inter- and intra-ethnic marriages.

4.
Sports (Basel) ; 11(2)2023 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-36828334

RESUMO

Heat acclimation (HA) is the foremost method of preventing exertional heat illness during exercise in hot and humid environments. However, the prevalence of HA training and its associated knowledge is not currently known in recreational running populations. The purpose of this study was to determine the knowledge of recreational runners toward HA. A survey consisting of 38 questions that required approximately 10-15 min to complete was disseminated to running clubs throughout the Southeastern United States. Questions were designed to collect data on participant demographics, yearly training habits, and HA knowledge. Recreational runners (N = 125) demonstrated a lack of knowledge toward proper HA training and its associated benefits. Participants largely received HA advice from their peers (31.2%) and reported no professional guidance in their training (79.2%). Finally, participants' beliefs toward proper HA training differed among training groups with moderate and high groups perceiving greater frequency, miles/wk, and min/wk as appropriate for HA compared to the low group (p ≤ 0.05). Due to the warmer temperatures and higher relative humidity experienced in the southeastern, southwestern, and mid-Atlantic locations of the United States and throughout certain regions of the European Union, governing bodies in sport and exercise science should develop more educational initiatives to convey the importance and advantages of HA, especially when runners are training for major marathons that are typically held in the late spring and early fall seasons.

5.
Demography ; 60(2): 461-492, 2023 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-36794767

RESUMO

Many U.S. parents share a household with an adult child in later life. However, the reasons parents and adult children coreside may vary over time and across family race/ethnicity, shaping relationships with parents' mental health. Using the Health and Retirement Study, this study investigates the determinants and mental health correlates of coresidence with adult children from 1998 to 2018 among White, Black, and Hispanic parents under age 65 and aged 65+. Findings show that the predictors of coresidence shifted with increasing odds that parents lived with an adult child, and several varied by parents' age group and race/ethnicity. Compared with White parents, Black and Hispanic parents were more likely to live with adult children, especially at older ages, and to indicate that they helped their children with household finances or functional limitations. Living with adult children was associated with higher depressive symptoms among White parents, and mental health was negatively related to living with adult children who were not working or were helping parents with functional limitations. The findings highlight increasing diversity among adult child-coresident parents and underscore persistent differences in the predictors and meaning of coresidence with adult children across race/ethnicity.


Assuntos
Filhos Adultos , Etnicidade , Relação entre Gerações , Saúde Mental , Adulto , Humanos , Pais/psicologia , Características de Residência , Relação entre Gerações/etnologia
6.
Adv Physiol Educ ; 46(2): 211-218, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-35085034

RESUMO

Restrictions due to the coronavirus (COVID-19) pandemic impacted the ability of faculty and students in exercise science to work in lab settings with human participants. The purpose of this study was to determine how exercise science faculty were impacted by COVID-19 restrictions with respect to access and use of exercise science lab and research facilities. Of the 100 surveyed participants categorized as requiring access to people and lab spaces (lab-based faculty), 61% (n = 61) reported decreased research productivity with 87% (n = 53) of those faculty in one or more of the following subdisciplines: exercise physiology, clinical exercise physiology, or biomechanics. Of all lab-based faculty, 40% (n = 40) participants reported having access to students and lab spaces and 55% (n = 55) indicated they were allowed to conduct in-person research. Of tenure-track lab-based faculty, 80% (n = 20) reported a decrease in research productivity, of which 60.0% (n = 12) identified as female. Among faculty with 5 or less years of teaching experience (n = 23), 69.6% (n = 16) reported a decrease in productivity, with 68.8% (n = 11) of those being female. All exercise science faculty surveyed reported issues with safety and social distancing, modified lab and research procedures, faculty workload, and research productivity. This information can be leveraged to create better infrastructure to support faculty and develop and implement strategies to reduce workload inequities.


Assuntos
COVID-19 , Eficiência , Docentes , Feminino , Humanos , Laboratórios , SARS-CoV-2
7.
Scand J Public Health ; 50(2): 172-179, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32862798

RESUMO

Background: Certain migration contexts that may help clarify immigrants' health needs are understudied, including the order in which married individuals migrate. Research shows that men, who are healthier than women across most populations, often migrate to a host country before women. Using Danish register data, we investigate descriptive patterns in the order that married men and women arrive in Denmark, as well as whether migration order is related to overnight hospitalizations. Methods: The study base includes married immigrants who lived in Denmark between January 1, 1980 and December 31, 2014 (N = 13,680). We use event history models to examine the influence of spousal migration order on hospitalizations. Results: The order that married individuals arrive in Denmark is indeed highly gendered, with men tending to arrive first, and varies by country of origin. Risk of hospitalization after age 50 does not depend on whether an individual migrated before, after, or at the same time as their spouse among either men or women. However, among those aged 18+, men migrating before their wives are more likely to experience hospitalizations within the first 5 years of arrival. Conclusions: These findings provide the first key insights about gendered migration patterns in Denmark. Although spousal order of migration is not related to overnight hospitalization among women, our findings provide preliminary evidence that men age 18+ who are first to arrive experience more hospitalization events in the following 5 years. Future research should explore additional outcomes and whether other gendered migration contexts are related to immigrants' health.


Assuntos
Emigrantes e Imigrantes , Adolescente , Dinamarca , Feminino , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Sistema de Registros
8.
Adv Physiol Educ ; 45(4): 829-834, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34473582

RESUMO

Significant disruptions in higher education course delivery occurred during the coronavirus (COVID-19) global pandemic. The implementation of emergency remote teaching (ERT) offered exercise science faculty a safe method to continue educating students in courses generally taught face-to-face. The purpose of this investigation was to explore faculty perceptions of their ERT efforts with respect to student successes, challenges, and faculty expectations. Through an electronic survey, participants (n = 112) from higher education institutions in 31 states and three Canadian provinces provided feedback on their perceptions of the student experience across 315 fall 2020 courses. Data analysis included a thematic analysis to identify themes and trends in participant responses. Faculty identified student adaptability, increased autonomy of learning, and maintenance of learning as successes. Also noted was the increased flexibility of alternative pedagogy methods. Participants perceived student challenges related to technology, time management, and well-being. Faculty perceived students expected increased accommodations and instructor responsiveness during fall 2020. While faculty and students were challenged to adapt during the global pandemic, the perceived ERT experiences during COVID-19 highlight the resiliency of higher education students and underscores changes needed by educational institutions to provide resources and training upon return to traditional education or in response to a future crisis.


Assuntos
COVID-19 , Educação a Distância , Canadá , Docentes , Humanos , Pandemias , Percepção , SARS-CoV-2 , Estudantes
9.
J Gerontol B Psychol Sci Soc Sci ; 76(10): 2155-2168, 2021 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-34313712

RESUMO

OBJECTIVES: Widowhood is a stressful life event with one of the most profound negative effects on health and longevity. Immigrant populations are growing and aging throughout Western nations, and marginalization and cultural differences may make some immigrants especially vulnerable to the stressors of widowhood. However, studies have yet to systematically explore whether the widowhood effect differs between immigrant and native-born individuals. METHODS: Using Danish population register data from 1980 to 2014, this study assesses whether the relationship between widowhood and mortality differs between immigrants from 10 countries and native-born Danes aged 50 and older at 0-2, 3-5, and 6 and more years post-widowhood. RESULTS: We find that immigrant men are at higher risk of dying in the first 2 years after experiencing widowhood than Danish-born men, but these mortality differences dissipate over longer periods. Immigrant women have a higher risk of having died 3 and more years after a spouse's death than Danish women. Patterns vary further by country of origin. DISCUSSION: The results suggest that some immigrants may suffer more from widowhood than native-born individuals, giving insight into how immigration background may influence the health effects of negative life events. They also underscore the potential vulnerabilities of aging immigrant populations to stressors encountered in older age.


Assuntos
Emigrantes e Imigrantes , Povos Indígenas , Mortalidade , Estresse Psicológico , Viuvez , Idoso , Características Culturais , Dinamarca/epidemiologia , Emigrantes e Imigrantes/psicologia , Emigrantes e Imigrantes/estatística & dados numéricos , Feminino , Humanos , Povos Indígenas/psicologia , Povos Indígenas/estatística & dados numéricos , Acontecimentos que Mudam a Vida , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Marginalização Social/psicologia , Estresse Psicológico/mortalidade , Estresse Psicológico/psicologia , Populações Vulneráveis/psicologia , Viuvez/psicologia , Viuvez/estatística & dados numéricos
10.
Eur J Sport Sci ; 21(8): 1111-1118, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32930647

RESUMO

AbstractObjectives: This study assessed the ability of coaches to rank-order distance runners on running economy (RE) through visual assessment. Methods: Running economy was measured in five trained recreational distance runners at a speed of 3.57 m·s-1, with a minimum VO2 difference of 2-mL.kg-1.min-1 between adjacent runners. Following measurement of RE, participants were filmed from the front, side, and rear while running on a treadmill. Endurance coaches from high school to international level (N = 121) viewed each video and ranked the runners on a scale from 1 (most economical) to 5 (least economical). Coaches also completed a demographic questionnaire and listed running style biomechanical observations they used in determining each ranking. A cumulative odds ordinal logistic regression with proportional odds was run to determine the effect of coaching level, years of coaching experience, years of training experience, competition level, certification status, and education level, on the ability of distance running coaching to accurately rank RE among a group of runners. Results: No coaching characteristic was a significant predictor of ranking accuracy, χ2 = 3.566, p = .735. Conclusions: Visual assessment of effort, based on RE, is a difficult task, even for the trained eye and could be related to difficulty in understanding the interaction effect of various RE factors or the translation of scientific-based knowledge to the field of play. Practically, coaches should be cautious when recommending biomechanical adjustments without considering the interconnected factors related to such changes.


Assuntos
Corrida/classificação , Corrida/fisiologia , Adulto , Fenômenos Biomecânicos , Distribuição da Gordura Corporal , Estatura , Índice de Massa Corporal , Metabolismo Energético , Análise da Marcha , Frequência Cardíaca , Humanos , Masculino , Tutoria , Consumo de Oxigênio , Estudos de Tempo e Movimento , Gravação em Vídeo , Adulto Jovem
11.
Demography ; 57(1): 373-402, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31828735

RESUMO

Although paid work is a well-established predictor of health, several gaps in our knowledge about the relationship between adult work patterns and later health and mortality remain, including whether these benefits persist over long periods and whether they are dependent on subjective experiences with work. We draw on more than three decades of data from the National Longitudinal Survey of Mature Women to assess how labor force participation over a period of 20 years during midlife is related to mental and physical health and mortality over the following 16-25 years. We find that consistent work earlier in life continues to predict improved health and longevity over many years as women enter late life, and this relationship does not differ between women with positive and those with negative subjective work experiences. These findings add to knowledge about how key adult social experiences are related to health as individuals enter later life.


Assuntos
Emprego/estatística & dados numéricos , Nível de Saúde , Saúde Mental/estatística & dados numéricos , Mortalidade/tendências , Adulto , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Fatores Socioeconômicos , Saúde da Mulher , Mulheres Trabalhadoras
12.
J Health Soc Behav ; 60(2): 204-221, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31122076

RESUMO

Although many studies have examined contemporary increases in parent-adult child coresidence, questions about what this demographic shift means for the well-being of parents remain. This article draws on insights from the life course perspective to investigate the relationship between parent-adult child coresidence and parental mental health among U.S. adults ages 50+, distinguishing between parents stably living with and without adult children and those who transitioned into or out of coresidence with an adult child. Based on analyses of the 2008 to 2012 waves of the Health and Retirement Study (N = 11,277), parents with a newly coresidential adult child experienced an increase in depressive symptoms relative to their peers without coresidential adult children. Further analyses suggest that transitions to coresidence that occurred in the southern United States or involved out-of-work children were particularly depressing for parents. These findings highlight the significance of evolving intergenerational living arrangements for the well-being of older adults.


Assuntos
Filhos Adultos , Recessão Econômica , Saúde Mental , Pais/psicologia , Características de Residência , Idoso , Idoso de 80 Anos ou mais , Depressão/epidemiologia , Depressão/fisiopatologia , Feminino , Humanos , Relação entre Gerações , Masculino , Pessoa de Meia-Idade , Meio-Oeste dos Estados Unidos/epidemiologia
13.
Soc Sci Med ; 228: 41-50, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30875543

RESUMO

Research indicates that women have higher levels of physical disability and depression and lower scores on physical performance tests compared to men, while the evidence for gender differences in self-rated health is equivocal. Scholars note that these patterns may be related to women over-reporting and men under-reporting health problems, but gender differences in reporting behaviors have not been rigorously tested. Using Wave 1 of the Survey of Health, Ageing and Retirement in Europe (SHARE), the present study investigates the extent to which adjusting for differences in reporting behavior modifies gender differences in general health. We also examine whether men and women's reporting behaviors are consistent across different levels of education. After adjusting for reporting heterogeneity, gender differences in both poor and good health widened. However, we found no clear gender-specific patterns in reporting either poor or good health. Our findings also do not provide convincing evidence that education is an important determinant of general health reporting, although the female disadvantage in poor health and the male advantage in good health were more apparent in lower than higher education groups at all ages. The results challenge prevailing stereotypes that women over-report and men under-report health problems and highlight the importance of attending to health problems reported by women and men with equal care.


Assuntos
Nível de Saúde , Fatores Sexuais , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Doença Crônica/epidemiologia , Avaliação da Deficiência , Europa (Continente) , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Aposentadoria/psicologia , Aposentadoria/estatística & dados numéricos , Autorrelato
14.
Clin Diabetes ; 37(1): 36-43, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30705495

RESUMO

IN BRIEF A large number of adults with type 2 diabetes experience comorbidities that discourage physical activity and hinder regular participation in land-based exercise programs. An aquatic exercise program is an innovative exercise modality that incorporates combined aerobic and resistance exercise. The purpose of this study was to determine if an underwater treadmill walking program featuring gradual and progressive increases in walking speed and duration has a positive effect on glycemic control, metabolic health, cardiovascular function, body composition, and leg strength in middle-aged adults with type 2 diabetes.

15.
J Spinal Cord Med ; 42(4): 526-533, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-29360000

RESUMO

Background: Strengthening the lower extremities has shown to positively influence walking mechanics in those with neurological deficiencies. Eccentric resistance training (ERT) is a potent stimulus for the development of muscular strength with low metabolic demand. Thereby, ERT may benefit those with incomplete spinal cord injuries (iSCI) seeking to improve ambulatory capacity. Design: This study was aimed to determine the effect of ERT on walking speed, mobility, independence, and at home function following iSCI. Methods: Individuals with longstanding iSCI trained twice a week for 12 weeks on an eccentrically biased recumbent stepper. Outcome measures: Walking speed (10 meter walk test; 10MWT), mobility (timed up and go), independence (Walking Index for Spinal Cord Injury; WISCI), and at home function (Spinal Cord Independence Measure; SCIM) were assessed at baseline, after 6 weeks, and after 12 weeks of ERT. Results: There were improvements in walking mobility (158.36 + 165.84 seconds to 56.31 + 42.42 seconds, P = .034, d = 0.62), speed (0.34 + 0.42  m/s to 0.43 + 0.50  m/s, P = .005, d = .23), and independence (8 + 7 to 13 + 7, P = .004, d = .73) after 12 weeks of ERT. At home function remained unchanged (22 + 10 to 24 + 10, P = .10, d = .12). Conclusions: Improving lower extremity strength translated to walking performance and independence in those with iSCI. Additionally, ERT may diminish therapist burden in programs designed to improve ambulatory capacity or strength in those with iSCI.


Assuntos
Exercício Físico/fisiologia , Força Muscular/fisiologia , Recuperação de Função Fisiológica/fisiologia , Treinamento Resistido/métodos , Traumatismos da Medula Espinal/reabilitação , Caminhada/fisiologia , Adulto , Idoso , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Treinamento Resistido/instrumentação , Traumatismos da Medula Espinal/diagnóstico , Adulto Jovem
16.
Top Spinal Cord Inj Rehabil ; 24(4): 343-352, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30459497

RESUMO

Background: Individuals with spinal cord injuries (SCIs) often experience general weakness in the lower extremities that undermines daily step activity. Objective: To investigate the efficacy of eccentrically biased resistance training on lower extremity strength and physical activity of individuals with spinal injuries. Methods: Individuals with long-standing incomplete SCIs (N = 11) capable of completing a 10-meter walk assessment were included. All participants who completed the familiarization period finished the training. Individuals trained two times per week for 12 weeks on a lower body eccentric resistance training machine. It was hypothesized that the outcome variables (eccentric strength, isometric strength, and daily step physical activity) would improve as a result of the training intervention. Results: Eccentric strength [F(1.27, 12.71) = 8.42, MSE = 1738.35, H-F p = .009] and isometric strength [F(1.97, 19.77) = 7.10, MSE = 11.29, H-F p = .005] improved as a result of the training while daily step activity remained unchanged [F(2.00, 18.00) = 2.73, MSE = 216,836.78, H-F p = .092]. Conclusions: Eccentric resistance training improves eccentric and isometric strength. These physiological adaptations may translate to improved gait mechanics, but further study is required to identify this potential crossover effect.


Assuntos
Marcha/fisiologia , Força Muscular/fisiologia , Treinamento Resistido/métodos , Traumatismos da Medula Espinal/reabilitação , Caminhada/fisiologia , Adulto , Feminino , Humanos , Contração Isométrica/fisiologia , Masculino , Pessoa de Meia-Idade , Adulto Jovem
17.
Prog Cardiovasc Dis ; 61(2): 136-141, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29981352

RESUMO

The joint association of cardiorespiratory fitness (CRF) and body mass index (BMI) on cardiovascular disease (CVD) mortality was determined. PubMed and CINAHL were searched following PRISMA guidelines. Included studies were prospective, had objective assessments of maximal CRF and BMI, and compared the joint impact of CRF and BMI on CVD mortality risk to normal weight, fit referents. Pooled hazard ratios and 95% confidence intervals were calculated from eight articles with nine independent groups using a random effects model. Unfit individuals had two to three times the risk of mortality across all levels of BMI. Overweight and obese-fit individuals had 25% and 42% increased mortality risk, respectively, compared to normal weight-fit individuals. However, for the obese-fit group, a one study removed analysis for five studies resulted in non-significant changes in mortality risk. Researchers, clinicians, and public health officials are encouraged to employ CRF interventions to reduce CDV mortality risk.


Assuntos
Adiposidade , Aptidão Cardiorrespiratória , Doenças Cardiovasculares/mortalidade , Exercício Físico , Estilo de Vida Saudável , Obesidade/mortalidade , Índice de Massa Corporal , Doenças Cardiovasculares/fisiopatologia , Doenças Cardiovasculares/prevenção & controle , Nível de Saúde , Humanos , Obesidade/fisiopatologia , Obesidade/prevenção & controle , Prognóstico , Fatores de Risco , Comportamento de Redução do Risco
18.
J Med Eng Technol ; 42(4): 265-273, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29911930

RESUMO

PURPOSE: To examine the accuracy of activity monitors in estimating energy expenditure (EE) during activities of varying mode and intensity and to evaluate the impact of including energy expended during recovery from activity (EPOC) on the EE estimate. EE estimates obtained from the Fitbit Surge (FBS), Garmin Vívofit (GV) and SenseWear Armband Mini (SWA) were compared to criterion EE with and without EPOC adjustments during moderate- and vigorous-intensity treadmill and cycling activities. METHODS: Participants (N = 34; 23 males) completed counterbalanced treadmill or cycling conditions, comprised of a resting metabolic rate measurement, 10-min bouts of moderate- and vigorous-intensity activity and an EPOC measurement. Participants simultaneously wore the three activity monitors and a portable metabolic analyser. RESULTS: The FBS provided lowest percent error (PE) during treadmill walking (4.4%) and the GV during moderate (6.4%) and vigorous (-0.1%) cycling bouts. EPOC-adjusted PE was higher than non-EPOC PE across all monitors and activities. Mean absolute error rate (MAPE), indicating overall measurement error, was the smallest for the FBS (14.1%) during moderate treadmill walking and the largest for the SWA (53.5%) for vigorous intensity cycling. Only the FBS had comparable non-EPOC (14.6%) and EPOC-adjusted (17.6%) MAPE during treadmill walking. CONCLUSION: The activity monitors tended to underestimate EE during moderate and vigorous treadmill and cycling activities. The EE estimates from the activity monitors did not account for the energy cost met by anaerobic means during activity, as suggested by the higher EPOC-adjusted EE error rates.


Assuntos
Acelerometria/instrumentação , Metabolismo Energético , Monitorização Ambulatorial/instrumentação , Adulto , Ciclismo/fisiologia , Feminino , Humanos , Masculino , Caminhada/fisiologia , Adulto Jovem
19.
Int J Exerc Sci ; 11(5): 308-318, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29795738

RESUMO

The purpose of the study was to examine the effects of a school-based cross-training program on body mass index (BMI), attitudes toward physical activity (ATPA), and physical activity (PA) levels of children in the 4th and 5th grades. Children (N = 118) were divided into control (n = 60) and experimental (n = 58) groups based on class availability. While the control group continued academic classes as usual, the experimental group participated in cross-training involving resistance training (RT), calisthenics, and stretching twice a week for 10 weeks. Pre- and post-intervention measures included height, mass, ATPA, and PA. BMI was calculated and ATPA and PA levels were assessed via questionnaire. The groups did not differ significantly (p > .05) for either pre- or post-intervention regarding BMI, ATPA, and PA. However, BMI and PA levels significantly increased over time for both groups (p ≤ .05). Overall, cross-training in a school setting may be a safe and enjoyable option for physical activity participation. BMI and PA increases were likely the result of the natural growth process and seasonal weather pattern changes, respectively. Nevertheless, the cross-training did not detract from PA levels and may have led to an overall increase in PA levels. As subdomain analyses revealed decreased attitude toward health and fitness in the experimental group, shorter programs involving RT with various protocols are recommended.

20.
Eur J Appl Physiol ; 118(7): 1309-1314, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29644392

RESUMO

PURPOSE: Rest-pause (4 s unloaded rest between repetitions) single session training effects on lifting volume, and muscle activity via electromyography (EMG) are currently vague in the literature and can benefit strength and conditioning professionals for resistance training program design. This study compared differences in volume lifted and muscle activity between a rest-pause vs. traditional protocol. METHODS: Trained females (N = 13) completed both a rest-pause and traditional squat protocol consisting of four sets to movement failure at 80% pretest 1 repetition maximum load with 2-min rest between sets. Total volume and muscle activity of the vastus lateralis, vastus medialis, rectus femoris, and gluteus maximus were measured on both training days. Differences in muscle activity were viewed as a percent change (%∆). RESULTS: A paired samples t test indicated total volume lifted was higher in the rest-pause compared to the traditional protocol (2532 vs. 2036 kg; p < .05). Furthermore, paired samples t tests showed muscle activity %∆ of the gluteus maximus was greater in the traditional protocol compared to the rest-pause protocol (p < .05). No other muscle activity differences were observed in the remaining muscles. CONCLUSIONS: The rest-pause allows for greater volume lifted via increased repetitions compared to a traditional protocol in trained women. The rest-pause method may be superior to a traditional method of training during a hypertrophy mesocycle, where a primary focus is total volume lifted. Furthermore, %∆ muscle activity in the GM will be greater while performing a traditional back squat protocol in comparison to a rest-pause.


Assuntos
Contração Muscular , Músculo Esquelético/fisiologia , Treinamento Resistido/métodos , Feminino , Humanos , Perna (Membro)/fisiologia , Levantamento de Peso/fisiologia , Adulto Jovem
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