156 research outputs found
Exploring athletic identity in elite-level English youth football: a cross-sectional approach.
This study is the first empirical investigation that has explored levels of athletic identity in elite-level English professional football. The importance of understanding athletes' psychological well-being within professional sport has been well documented. This is especially important within the professional football industry, given the high attrition rate (Anderson, G., & Miller, R. M. (2011). The academy system in English professional football: Business value or following the herd? University of Liverpool, Management School Research Paper Series. Retrieved from http://www.liv.ac.uk/managementschool/research/working%20papers/wp201143.pdf ) and distinct occupational practices (Roderick, M. (2006). The work of professional football. A labour of love? London: Routledge). A total of 168 elite youth footballers from the English professional football leagues completed the Athletic Identity Measurement Scale (AIMS). Multilevel modelling was used to examine the effect of playing level, living arrangements and year of apprentice on the total AIMS score and its subscales (i.e., social identity, exclusivity and negative affectivity). Football club explained 30% of the variance in exclusivity among players (P = .022). Mean social identity was significantly higher for those players in the first year of their apprenticeship compared to the second year (P = .025). All other effects were not statistically significant (P > .05). The novel and unique findings have practical implications in the design and implementation of career support strategies with respect to social identity. This may facilitate the maintenance of motivation over a 2-year apprenticeship and positively impact on performance levels within the professional football environment
Improvements in Cycling Time Trial Performance Are Not Sustained Following the Acute Provision of Challenging and Deceptive Feedback
The provision of performance-related feedback during exercise is acknowledged as an influential external cue used to inform pacing decisions. The provision of this feedback in a challenging or deceptive context allows research to explore how feedback can be used to improve performance and influence perceptual responses. However, the effects of deception on both acute and residual responses have yet to be explored, despite potential application for performance enhancement. Therefore, this study investigated the effects of challenging and deceptive feedback on perceptual responses and performance in self-paced cycling time trials (TT) and explored whether changes in performance are sustained in a subsequent TT following the disclosure of the deception.
Seventeen trained male cyclists were assigned to either an accurate or deceptive feedback group and performed four 16.1 km cycling TTs; 1 and 2) ride-alone baseline TTs where a fastest baseline (FBL) performance was identified, 3) a TT against a virtual avatar representing 102% of their FBL performance (PACER), and 4) a subsequent ride-alone TT (SUB). The deception group, however, were initially informed that the avatar accurately represented their FBL, but prior to SUB were correctly informed of the nature of the avatar. Affect, self-efficacy and RPE were measured every quartile.
Both groups performed PACER faster than FBL and SUB (p < 0.05) and experienced lower affect (p = 0.016), lower self-efficacy (p = 0.011), and higher RPE (p < 0.001) in PACER than FBL. No significant differences were found between FBL and SUB for any variable.
The presence of the pacer rather than the manipulation of performance beliefs acutely facilitates TT performance and perceptual responses. Revealing that athletes’ performance beliefs were falsely negative due to deceptive feedback provision has no effect on subsequent perceptions or performance. A single experiential exposure may not be sufficient to produce meaningful changes in the performance beliefs of trained individuals beyond the acute setting
Effective use of rituximab in combination with low dose cyclophosphamide in childhood onset systemic lupus erythematosus (SLE) with relapsing class IV nephritis
Enteric-coated sodium bicarbonate supplementation improves high-intensity cycling performance in trained cyclists
Purpose: Enteric-coated sodium bicarbonate (NaHCO3) can attenuate gastrointestinal (GI) symptoms following acute bicarbonate loading, although the subsequent effects on exercise performance have not been investigated. The purpose of this study was to examine the effects of enteric-coated NaHCO3 supplementation on high-intensity exercise performance and GI symptoms. Methods: Eleven trained male cyclists completed three 4 km time trials after consuming; a placebo or 0.3 g∙kg–1 body mass NaHCO3 in enteric-coated or gelatin capsules. Exercise trials were timed with individual peak blood bicarbonate ion concentration ([HCO3–]). Blood acid–base balance was measured pre-ingestion, pre-exercise, and post-exercise, whereas GI symptoms were recorded pre-ingestion and immediately pre-exercise. Results: Pre-exercise blood [HCO3−] and potential hydrogen (pH) were greater for both NaHCO3 conditions (P < 0.0005) when compared to placebo. Performance time was faster with enteric-coated (− 8.5 ± 9.6 s, P = 0.044) and gelatin (− 9.6 ± 7.2 s, P = 0.004) NaHCO3 compared to placebo, with no significant difference between conditions (mean difference = 1.1 ± 5.3 s, P = 1.000). Physiological responses were similar between conditions, although blood lactate ion concentration was higher with gelatin NaHCO3 (2.4 ± 1.7 mmol∙L–1, P = 0.003) compared with placebo. Furthermore, fewer participants experienced GI symptoms with enteric-coated (n = 3) compared to gelatin (n = 7) NaHCO3. Discussion: Acute enteric-coated NaHCO3 consumption mitigates GI symptoms at the onset of exercise and improves subsequent 4 km cycling TT performance. Athletes who experience GI side-effects after acute bicarbonate loading may, therefore, benefit from enteric-coated NaHCO3 supplementation prior to exercise performance.</p
Physical activity promotion and participation for people living with and beyond head and neck cancer: A mixed methods study
Purpose Head and neck cancer (HaNC) can be debilitating, resulting in high symptom burden. Physical activity (PA) can improve quality of life; however, less than 9% of HaNC patients are physically active. This study explored barriers to, and facilitators of, PA promotion and participation for HaNC patients. Methods Semi-structured interviews with patients, family members and healthcare professionals were conducted. A questionnaire was used to measure patients’ self-reported self-efficacy (The General Self-Efficacy Scale) and patients’ and healthcare professionals’ self-reported PA (The International PA Questionnaire — Short Form). Qualitative data were analysed using reflexive thematic analysis and quantitative data were analysed descriptively. Data were synthesised drawing on the Capability-Opportunity-Motivation-Behaviour model and the Theoretical Domains Framework. Results Twenty-eight patients, 10 family members and 18 healthcare professionals participated. Most patients self-reported moderate-to-high levels of PA and self-efficacy. Professionals self-reported high levels of PA. Patients were unaware of the benefits of PA for managing side effects and improving quality of life. Family members and professionals were fearful of patients causing themselves harm by being physically active (reflective motivation and beliefs about consequences). Some professionals did not consider it within their role to promote PA to HaNC patients. Many professionals stated they required training in PA promotion, and patients and family members stated they required information and guidance (psychological capability and knowledge). Conclusion The responsibility of PA promotion is multidisciplinary and educating patients on the benefits and safety of PA may mitigate treatment-related side effects and improve quality of life. Future research should explore if barriers to, and facilitators of, PA behaviour change over a patient’s treatment trajectory
Healthcare professionals’ promotion of physical activity to people living with and beyond head and neck cancer: a cross-sectional survey
Purpose Physical activity (PA) can improve health-related outcomes for head and neck cancer (HaNC) patients, and PA guidance from healthcare professionals’ can increase patients’ PA levels. However, less than 9% of HaNC patients are physically active. This study explored healthcare professionals’ promotion of PA across the National Health Service (NHS) in North West England and North Wales, to HaNC patients. Methods A cross-sectional online survey exploring healthcare professionals’ promotion of PA in HaNC. The International Physical Activity Questionnaire–Short Form was used to estimate healthcare professionals’ PA levels. Quantitative data were analyzed using descriptive or inferential statistics and qualitative data were analyzed using reflexive thematic analysis. Data were synthesized drawing on the capability-opportunity-motivation-behavior model and theoretical domains framework. Results Eighty-one professionals participated. Fifty-three percent self-reported high levels of PA. Seventy-five percent considered PA promotion as part of their role; however, only 39% discussed PA with their patients (reflective motivation and social/professional role and identity). Only 38% felt confident initiating PA discussions and 76% reported needing further training. Training on the benefits of PA for HaNC patients and how to encourage health-related behavior change were identified as beneficial (psychological capability and knowledge). Conclusion Healthcare professionals are influential in enabling patients to adopt health-related behavior change; however, PA promotion was not routine practice for professionals involved in the care of HaNC patients. Training should be provided to professionals on PA promotion, with a focus on behavior change techniques. Future research should explore how behavior change techniques can be implemented into clinical practice to improve health-related outcomes in HaNC
The validity and reproducibility of perceptually regulated exercise responses during combined arm + leg cycling
Relationships between cardiorespiratory fitness/muscular strength and 18F-fluorodeoxyglucose uptake in brown adipose tissue after exposure to cold in young, sedentary adults
Humans have metabolically active brown adipose tissue (BAT). However, what is the relation between exercise or physical activity with this tissue remains controversial. Therefore, the main aim of the present study is to examine whether cardiorespiratory fitness and muscular strength are associated with brown adipose tissue (BAT) volume and activity after exposure to cold in young, sedentary adults. Cardiorespiratory fitness was determined in 119 young, healthy, sedentary adults (68% women, age 21.9 ± 2.1 years, body mass index 25 ± 4.8 kg/m2) via the maximum treadmill exercise test, and their muscular strength assessed by the handgrip strength test and the 1-repetition maximum bench and leg press tests. Some days later, all subjects were exposed to 2 h of personalized exposure to cold and their cold-induced BAT volume and activity determined by a combination of 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography and computed tomography scan. Cardiorespiratory fitness was associated with neither the BAT volume nor BAT activity (P ≥ 0.05). However, handgrip strength with respect to lean body mass was positively (though weakly) associated with BAT activity as represented by the 18F-FDG mean standardised uptake value (SUV) (β = 3.595, R2 = 0.039, P = 0.031) and SUVpeak value (β = 15.314, R2 = 0.037, P = 0.035). The above relationships remained after adjusting for several confounders. No other associations were found. Handgrip strength with respect to lean body mass is positively associated with BAT activity (SUVmean and SUVpeak) in young adults after exposure to cold - but only weakly. Further studies are needed to reveal the relationship between muscular fitness and human BAT characteristics.This study was
supported by the Spanish Ministry of Economy and Competitiveness via the Fondo de Investigación Sanitaria
del Instituto de Salud Carlos III (PI13/01393), Retos de la Sociedad (DEP2016-79512-R) and European Regional
Development Funds (ERDF), the Spanish Ministry of Education (FPU13/04365 and FPU14/04172), the Fundación
Iberoamericana de Nutrición (FINUT), the Redes Temáticas de Investigación Cooperativa RETIC (Red SAMID
RD16/0022), the AstraZeneca HealthCare Foundation, the University of Granada Plan Propio de Investigación
2016 -Excellence actions: Unit of Excellence on Exercise and Health (UCEES) - and Plan Propio de Investigación
2018 - Programa Contratos-Puente, and the Junta de Andalucía, Consejería de Conocimiento, Investigación y
Universidades (ERDF: SOMM17/6107/UGR)
Influence of daily beer or ethanol consumption on physical fitness in response to a high-intensity interval training program. The BEER-HIIT study
The authors would like to thank all the participants that took part of the
study for their time and effort. We are grateful to Ms. Ana Yara PostigoFuentes for her assistance with the English language. This study is part of
Cristina Molina-Hidalgo’s Doctoral Thesis conducted in the Official Doctoral
Programme in Psychology of the University of Granada, Spain.Background: High-intensity interval training (HIIT) is an effective approach to improve physical fitness, but
consuming beer, which is a regular practice in many physically active individuals, may interfere with these effects.
The purposes of this study were to investigate the effects of a 10-week (2 days/week) HIIT program on
cardiorespiratory fitness, muscle strength and power parameters, and also to assess the possible influence on them
of a moderate consumption of beer (at least from Monday to Friday) or its alcohol equivalent.
Methods: Young (24 ± 6 years old) healthy adults (n = 73, 35 females) were allocated to five groups. Four groups
participated in the HIIT intervention program while the fifth group was a control Non-Training group (n = 15).
Participants in the training groups chose whether they preferred receiving alcohol or alcohol-free beverages. Those
choosing alcohol were randomized to either beer or ethanol intake: (i) T-Beer group (alcohol beer, 5.4%; n = 13) or
(ii) T-Ethanol (sparkling water with vodka, 5.4%; n = 14). Those choosing alcohol-free intake were randomized to (iii)
T-Water group (sparkling water, 0.0%; n = 16), or (iv) T-0.0Beer group (alcohol-free beer, 0.0%; n = 15). Men ingested
330 ml of the beverage at lunch and 330 ml at dinner; women ingested 330 ml at dinner. Before and after the
intervention, maximal oxygen uptake in absolute and relative terms (VO2max.), maximal heart rate, total test
duration, hand grip strength and four types of vertical jumps were measured.
Results: HIIT induced significant improvements in absolute and relative values of VO2max, and total test duration
(all p < 0.05) in all the training groups; also, clinical improvements were found in hand grip strength. These positive
effects were not influenced by the regular intake of beer or alcohol. No changes in the vertical jumps occurred in
any of the groups.
Conclusions: A moderate beer or alcohol intake does not mitigate the positive effect of a 10-week HIIT on physical
fitness in young healthy adults.
Trial registration: ClinicalTrials.gov ID: NCT03660579. Registered 20 September 2018. Retrospectively registered.Centro de Informacion Cerveza y Salud (CICS), Madrid, SpainSpanish Government
FPU14/04172
FPU15/0396
Changes of direction during high-intensity intermittent runs: neuromuscular and metabolic responses
- …
