Percorrer por autor "Santa-Clara, Helena"
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- Acute effects of commercial group exercise classes on arterial stiffness and cardiovagal modulation in healthy young and middle-aged adults : a crossover randomized trialPublication . Melo, Xavier; Lopes, Adma; Coelho, Raquel; Simão, Bruno; Oliveira, Isabel; Marôco, João L.; Laranjo, Sérgio; Fernhall, Bo; Santa-Clara, HelenaBackground: Arterial stiffness and cardiac autonomic function are crucial indicators of cardiovascular health. Acute exercise and age impact these parameters, but research often focuses on specific exercise activities, lacking ecological validity. Methods: We examined the acute effects of commercially available group fitness classes (indoor cycling, resistance training, combined exercise) on arterial stiffness and vagal-related heart rate variability (HRV) indices in twelve young and twelve middle-aged adults. Participants attended four sessions, including exercise and control conditions, with measurements taken at rest and during recovery. Results: Middle-aged, but not young adults, showed reductions in central and peripheral systolic blood pressure 20-min into recovery across all exercise modalities (range: -7 to -8 mmHg p < 0.05). However, arterial stiffness remained unchanged. Similarly, vagal-related HRV indices (range: -0.51 to -0.90 ms, p < 0.05) and BRS (-4.03, p < 0.05) were reduced immediately after exercise, with differences persisting 30 min into recovery only after indoor cycling. Resistance and combined exercise elicited similar cardiovagal modulation and delayed baroreflex sensitivity recovery to cycling exercise, despite higher energy expenditure during indoor cycling (+87 to +129 kcal, p < 0.05). Conclusion: Acute group fitness classes induce age-dependent alterations in blood pressure, but not in arterial stiffness or cardiovagal modulation. While the overall cardiovascular effects were generally consistent, differences in autonomic recovery were observed between exercise modes, with prolonged effects seen after indoor cycling. This suggests that exercise prescription should consider both age and exercise modality, as well as recovery time. The findings also emphasize the importance of ecological validity in exercise interventions, highlighting that acute effects on cardiovascular health in real-world settings may differ from those observed in controlled laboratory environments (ID: NCT06616428).
- Arterial stiffness following endurance and resistance exercise sessions in older patients with coronary artery diseasePublication . Santos, Vanessa; Massuça, Luís Miguel; Angarten, Vitor; Melo, Xavier; Pinto, Rita; Fernhall, Bo; Santa-Clara, HelenaArterial stiffness (AS) is associated with coronary artery disease (CAD). Acute endurance training decreases AS, whereas acute resistance training increases it. However, these results are from studies in apparently healthy adults, and there is no information on the effects of such afterload AS in elderly patients with CAD. We aimed to investigate the effect of acute endurance or resistance training on the time course of changes in the indices of AS in elderly patients with CAD in order to understand how stiffness responds after training. We tested 18 trained men with CAD. AS was measured using central and peripheral pulse wave velocity (PWV) after 15 min of rest and after 5, 15, and 30 min of endurance and resistance training sessions. The endurance session consisted of high-intensity interval walking at 85–90% of maximum heart rate, and the resistance session consisted of 70% of the maximum of one repetition. An interaction effect was found for central and peripheral PWV (p ≤ 0.001; carotid, η2 = 0.72; aortic, η2 = 0.90; femoral, η2 = 0.74), which was due to an increase in PWV after resistance and a decrease in central and peripheral PWV after endurance. This study demonstrates that training mode influences the time course of AS responses to acute exercise in these patients. Acute endurance training decreased AS, whereas resistance training significantly increased it.
- Arterial stiffness response to acute combined training with different volumes in coronary artery disease and heart failure patientsPublication . Santos, Vanessa; Massuça, Luís Miguel; Angarten, Vítor; Melo, Xavier; Pinto, Rita; Fernhall, Bo; Santa-Clara, HelenaResistance training has been shown to acutely increase arterial stiffness (AS), while endurance training appears to decrease AS. However, the findings are from studies in apparently healthy subjects and have limited applicability to patients at low and high cardiovascular risk, for whom combined exercise is recommended. We compared the time course of changes in local and regional indices of AS in response to high-volume combined endurance training (CET) and high-volume combined resistance training (CRT) in patients with coronary artery disease (CAD) and heart failure (HF). We studied 20 men with CAD and HF (10 each) aged 68.3 ± 9.6 years. AS was measured by pulse wave velocity (PWV), and brachial and central blood pressure (BP) were determined after 15 min of rest and 5 and 15 min after the exercise session. All patients completed two sessions on nonconsecutive days. A protocol by time interaction effect was observed for carotid (η2 = 0.21, p = 0.02), aortic (η2 = 0.60, p < 0.001), and femoral (η2 = 0.46, p = 0.01) PWV after CET and CRT, suggesting that PWV decreased after CET and increased after CRT. Decreases in the brachial and central variables of BP across time points were observed in both protocols. CET decreased whereas CRT increased carotid, aortic, and femoral PWV at 15 min after exercise in patients with CAD and HF.
- Correlation between functional capacity and health-related quality of life in Chronic Obstructive Pulmonary Disease patientPublication . Pereira, Ângela Maria; Pereira, Ernesto; Santa-Clara, Helena
- Effectiveness of two exercise training programs in patients with chronic obstructive pulmonary diseasePublication . Pereira, Ângela Maria; Pereira, Ernesto; Vicente, Sónia; Santa-Clara, HelenaThis study intended to assess the effectiveness ten years later, after attending to a combined or aerobic exercise training program, in Chronic Obstructive Pulmonary Disease (COPD) patients. Methods: Twenty moderate COPD men, were randomized into two groups: ten patients (age-66.5±6.2 years) to a combined exercise training program (CETG), and ten (age-65.4±3.6 years) to an aerobic program (AETG), for 10W, 3xW. Outcome variables included cardiopulmonary function (cardiopulmonary exercise test (CPET) and 6-min-walk-distance (6MWD), muscular strength (1-RM); and quality of life (HRQL) with SF-36 and SGRQ. Ten years later, both groups were compared with ten patients who weren’t submitted to exercise programs (CG), evaluating health service recurrence (HSR) and respiratory mortality. Results: Both exercise groups increased (p<.05) functional capacity (VO2peak: CETG-25±18%, AETG-26±25%); CPET time/power (CETG-42±30%, AETG-65±47%), 6MWD (CETG, 12±3%; AETG, 7±4%) and HRQL immediately after exercise, with greater benefits for the CETG (p<.05) in all variables. Ten years later, there were no differences between exercise groups on mortality and HSR. Between exercise groups and CG there were only significant differences on HSR. Conclusions: Combined exercise was more effective than aerobic with greater improvement in muscular strength, functional capacity and HRQL. Participation in exercise programs seems to reduce HSR at long-term follow-up.
- Effects of kettlebell swing training on cardiorespiratory and metabolic demand to a simulated competition in young female artistic gymnastsPublication . Melo, Xavier; Arrais, Inês; Marôco, João Luís; Ribeiro, Pedro Neto; Nabais, Sara; Coelho, Raquel; Reis, Joana; Angarten, Vítor; Fernhall, Bo; Santa-Clara, HelenaWe examined the effects of adding a Kettlebell Swing training program (KB) to the regular skill-training protocol (REGULAR) on cardiorespiratory fitness, cardiorespiratory/metabolic demand, and recovery to a simulated competition of female artistic gymnastics. Nine gymnasts (13±2 years) had their REGULAR complemented with a 4-week kettlebell training (REGULAR+KB), consisting of 3 sessions/week of 12x30” swings x 30” rest with ¼ of their body weight, while 9 aged-matched gymnasts acted as a comparison group. Peak oxygen uptake () during routines was estimated from the O2 recovery curve using backward extrapolation and off-kinetics parameters were modeled through a mono-exponential function. Heart rate (HR) was monitored continuously and capillary blood lactate (BLa-) was measured before and after each routine (1st and 3rd min). Cardiorespiratory fitness () was evaluated using a ramp cycle ergometer test. A training-by-time interaction effect was observed for (p = 0.009) as increments were only observed after REGULAR+KB (M = 8.85, SD = 9.67 ml.kg.min-1). No training-by-time interactions were observed for HRpeak (p = 0.39), (p = 0.07), or La-post3 (p = 0.25), both training protocols reduced HRpeak (M = -12; SD = 11 b.min-1) and BLa-post1 (M = -0.70; SD = 1.29 mmol.L-1) during the simulated competition, but not relative . No training-by-time interaction was observed for the off-transient time constant (p = 0.38). recovery was slower (M = 5; SD = 10 s) after both protocols. Both training protocols improved cardiorespiratory and metabolic demands and recovery kinetics to a simulated competition of female artistic gymnastics, although increases in cardiorespiratory fitness were only observed in REGULAR+KB.
- Functional capacity and health status in patient with Chronic Obstructive Pulmonary DiseasePublication . Pereira, Ângela Maria; Pereira, Ernesto; Santa-Clara, Helena
- Functional capacity and health status in patient with chronic obstructive pulmonary diseasePublication . Pereira, Ângela Maria; Pereira, Ernesto; Santa-Clara, Helena
- Home- vs gym-based exercise delivery modes of two multicomponent intensity training regimes on cardiorespiratory fitness and arterial stiffness in adults with intellectual and developmental disability during the COVID-19 pandemic : a randomized controlled trialPublication . Melo, Xavier; Simão, Bruno; Catela, Catarina; Oliveira, Isabel; Planche, Sara; Louseiro, Ana; Marôco, João Luís; Oviedo, Guillermo R.; Fernhall, Bo; Santa-Clara, HelenaBackground: We compared the effects of home- vs gym-based delivery modes of two 8-week supervised multicomponent intensity training regimes on cardiorespiratory fitness and arterial stiffness in 17 adults with intellectual and developmental disability during the COVID-19 pandemic. Methods: Participants were assigned to sprint interval training or continuous aerobic training, both incorporating resistance training. The intervention started with 8-weeks of online training (M1-M2), 1-month of detraining, plus 8-weeks of gym-based training (M3-M4). Results: Peak oxygen uptake decreased from M1-M2 and increased from M2-M4. Central arterial stiffness decreased between M1-M2, and M1-M4, along with peripheral arterial stiffness. Central systolic blood pressure decreased from M1-M2 only with sprint interval training. Conclusion: Home-based training minimized the negative impact of the lockdown on central arterial stiffness and central blood pressure, but it did not match the benefits on cardiorespiratory fitness and peripheral arterial stiffness of a gym-based intervention, irrespective of the multicomponent intensity training regime. Registered in ClinicalTrials.gov NCT05701943.
- Impacto do exercício físico combinado na percepção do estado de saúde da pessoa com doença pulmonar obstrutiva crónicaPublication . Pereira, Ângela Maria; Santa-Clara, Helena; Pereira, Ernesto; Simões, Sérgio; Remédios, Índia; Cardoso, João; Brito, José; Cabri, Jan; Fernhall, Bo"Objectivo: O objectivo do estudo consistiu em avaliar a eficácia de um programa de treino combinado (exercícios aeróbios e exercícios de força muscular dinâmica) comparativamente com um programa de treino aeróbio, e de fisioterapia respiratória, ao nível do estado de saúde de indivíduos com DPOC, durante 10 semanas. Métodos: Cinquenta indivíduos com DPOC moderada e grave foram distribuídos aleatoriamente por dois grupos. Grupo CG (n=25) submetido a treino combinado, grupo AG (n=25) submetido a treino aeróbio, os quais foram comparados com cinquenta indivíduos com DPOC, que realizaram exercícios de reeducação respiratória e técnicas de desobstrução brônquica, grupo FR (n=50). Foi avaliado o estado de saúde através de Questionário do Hospital St. George na Doença Respiratória (SGRQ) e do Questionário SF -36 no início da intervenção e 10 semanas após. Resultados: O grupo CG apresentou diferenças (p<0,0001) nas taxas de modificação no estado de saúde relativamente, aos grupos AG e FR, nos domínios da actividade (64±9%; 19±7%;1±15%), impacto (35±5%; 20±18%; 1±14%), e total (41±9%; 26±17%; 1±15%), avaliados pelo SGRQ; e nas dimensões da função física (109±74%; 22±12%; 0,1±18%), desempenho físico (52±36%; 11±15%; 1,3±21%) e vitalidade (83±39%; 14±38%) avaliadas pelo SF -36. Conclusão: Estes resultados sugerem que o treino combinado, em indivíduos com DPOC, parece ser um método mais eficaz, que promoveu alterações clinicamente significativas, com uma melhoria ao nível da percepção do estado de saúde."