Is Matching Exercise Intensity to Heart Rate Variability a Key to Effective Conditioning for Dancers? A Prospective Randomized Controlled Trial

2021 ◽  
Author(s):  
Meredith N. Butulis ◽  
Brittany J. Fedor ◽  
Rebecca Stone McGaver ◽  
M. Russell Giveans
Keyword(s):  
Heart Rate ◽  
Randomized Controlled Trial ◽  
Lower Extremity ◽  
Mobile Technology ◽  
Controlled Trial ◽  
Muscle Endurance ◽  
Control Group ◽  
Randomized Controlled ◽  
Intensity Control ◽  
Prospective Randomized Controlled Trial

Dancers seek studio-based conditioning methods that improve fitness to help them meet the demands of their discipline. Heart rate variability (HRV) mobile technology offers one such potential method. The purpose of this prospective randomized controlled trial was to investigate how HRV impacted fitness outcomes over a 4 to 6 week period of supplemental training. The study’s cohort, 134 competitive female dancers ages 12 to 35, were randomly assigned to one of three groups: the HRV study group, the Tabata high-intensity control group, or the Vinyasa yoga low-intensity control group. Fitness assessments conducted in the pre- and post-training period included cardiovascular endurance, muscular endurance, and lower extremity power. These assessments were evaluated with ANOVA between group and within group comparisons. Results revealed lower extremity power improvement in the HRV group at a statistically significant level (p < 0.05) and overall trends toward greater muscle endurance. Additional unanticipated findings surfaced in the yoga control group that demonstrated cardiovascular improvements and normalization of right versus left lower extremity power discrepancies. Conclusions support the use of HRV mobile technology to individualize daily conditioning intensity, thereby efficiently improving lower extremity power and overall muscle endurance for dancers while monitoring for signs of overtraining.

scholarly journals The effect of therapeutic listening on anxiety and fear among surgical patients: randomized controlled trial

2018 ◽  
Vol 26 (0) ◽  
Author(s):  
Ana Cláudia Mesquita Garcia ◽  
Talita Prado Simão-Miranda ◽  
Ana Maria Pimenta Carvalho ◽  
Paula Condé Lamparelli Elias ◽  
Maria da Graça Pereira ◽  
...  
Keyword(s):  
Heart Rate ◽  
Randomized Controlled Trial ◽  
State Anxiety ◽  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Clinical Trial Registration ◽  
Physiological Variables ◽  
Randomized Controlled ◽  
Therapeutic Listening

ABSTRACT Objective: To investigate the effect of therapeutic listening on state anxiety and surgical fears in preoperative colorectal cancer patients. Method: A randomized controlled trial with 50 patients randomly allocated in the intervention group (therapeutic listening) (n = 25) or in the control group (n = 25). The study evaluated the changes in the variables state anxiety, surgical fears and physiological variables (salivary alpha-amylase, salivary cortisol, heart rate, respiratory rate and blood pressure). Results: In the comparison of the variables in the control and intervention groups in pre- and post-intervention, differences between the two periods for the variables cortisol (p=0.043), heart rate (p=0.034) and surgical fears (p=0.030) were found in the control group, which presented reduction in the values of these variables. Conclusion: There was no reduction in the levels of the variables state anxiety and surgical fears resulting from the therapeutic listening intervention, either through the physiological or psychological indicators. However, the contact with the researcher during data collection, without stimulus to reflect on the situation, may have generated the results of the control group. Clinical Trial Registration: NCT02455128.

scholarly journals Rapid Intervention of Chlorpromazine and Promethazine for Hibernation-Like Effect in Stroke: Rationale, Design, and Protocol for a Prospective Randomized Controlled Trial

2021 ◽  
Vol 12 ◽  
Author(s):  
Shuyu Lv ◽  
Wenbo Zhao ◽  
Gary B. Rajah ◽  
Chaitu Dandu ◽  
Lipeng Cai ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Intravenous Administration ◽  
Neuroprotective Effect ◽  
Controlled Trial ◽  
Intervention Group ◽  
Intravenous Thrombolysis ◽  
Control Group ◽  
Short Treatment ◽  
Randomized Controlled ◽  
Prospective Randomized Controlled Trial

Background: Following an acute ischemic stroke (AIS), rapidly initiated reperfusion therapies [i. e., intravenous thrombolysis (IVT) and endovascular treatment (EVT)] demonstrate robust clinical efficacy. However, only a subset of these patients can benefit from these therapies due to their short treatment windows and potential complications. In addition, many patients despite successful reperfusion still have unfavorable outcomes. Thus, neuroprotection strategies are urgently needed for AIS patients. Chlorpromazine and promethazine (C+P) have been employed in clinical practice for antipsychotic and sedative purposes. A clinical study has also shown a neuroprotective effect of C+P on patients with cerebral hemorrhage and subarachnoid hemorrhage. The safety, feasibility, and preliminary efficacy of intravenous administration of C+P in AIS patients within 24 h of onset will be elucidated.Methods: A prospective randomized controlled trial is proposed with AIS patients. Participants will be randomly allocated to an intervention group and a control group with a 1:1 ratio (n = 30) and will be treated with standard therapies according to the current stroke guidelines. Participants allocated to the intervention group will receive intravenous administration of C+P (chlorpromazine 50 mg and promethazine 50 mg) within 24 h of symptom onset. The primary outcome is safety (mainly hypotension), while the secondary outcomes include changes in functional outcome and infarction volume.Discussions: This study on Rapid Intervention of Chlorpromazine and Promethazine for Hibernation-like Effect in Stroke (RICHES) will be the first prospective randomized controlled trial to ascertain the safety, feasibility, and preliminary efficacy of intravenous C+P as a neuroprotection strategy in AIS patients. These results will provide parameters for future studies, provide insights into treatment effects, and neuroprotection with phenothiazine in AIS.Clinical Trial Registration:www.chictr.org.cn, identifier: ChiCTR2000038727.

Early outcomes of primary total hip arthroplasty with use of a smartphone-based care platform: a prospective randomized controlled trial

2021 ◽  
Vol 103-B (7 Supple B) ◽  
pp. 91-97 ◽  
Author(s):  
David A. Crawford ◽  
Adolph V. Lombardi ◽  
Keith R. Berend ◽  
James I. Huddleston ◽  
Christopher L. Peters ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Treatment Group ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Care Management ◽  
Controlled Trial ◽  
Urgent Care ◽  
Control Group ◽  
Randomized Controlled ◽  
Prospective Randomized Controlled Trial

Aims The purpose of this study is to evaluate early outcomes with the use of a smartphone-based exercise and educational care management system after total hip arthroplasty (THA) and demonstrate decreased use of in-person physiotherapy (PT). Methods A multicentre, prospective randomized controlled trial was conducted to evaluate a smartphone-based care platform for primary THA. Patients randomized to the control group (198) received the institution’s standard of care. Those randomized to the treatment group (167) were provided with a smartwatch and smartphone application. PT use, THA complications, readmissions, emergency department/urgent care visits, and physician office visits were evaluated. Outcome scores include the Hip disability and Osteoarthritis Outcome Score (HOOS, JR), health-related quality-of-life EuroQol five-dimension five-level score (EQ-5D-5L), single leg stance (SLS) test, and the Timed Up and Go (TUG) test. Results The control group was significantly younger by a mean 3.0 years (SD 9.8 for control, 10.4 for treatment group; p = 0.007), but there were no significant differences between groups in BMI, sex, or preoperative diagnosis. Postoperative PT use was significantly lower in the treatment group (34%) than in the control group (55.4%; p = 0.001). There were no statistically significant differences in complications, readmissions, or outpatient visits. The 90-day outcomes showed no significant differences in mean hip flexion between controls (101° (SD 10.8)) and treatment (100° (SD 11.3); p = 0.507) groups. The HOOS, JR scores were not significantly different between control group (73 points (SD 13.8)) and treatment group (73.6 points (SD 13); p = 0.660). Mean 30-day SLS time was 22.9 seconds (SD 19.8) in the control group and 20.7 seconds (SD 19.5) in the treatment group (p = 0.342). Mean TUG time was 11.8 seconds (SD 5.1) for the control group and 11.9 (SD 5) seconds for the treatment group (p = 0.859). Conclusion The use of the smartphone care management system demonstrated similar early outcomes to those achieved using traditional care models, along with a significant decrease in PT use. Noninferiority was demonstrated with regard to complications, readmissions, and ED and urgent care visits. This technology allows patients to rehabilitate on a more flexible schedule and avoid unnecessary healthcare visits, as well as potentially reducing overall healthcare costs. Cite this article: Bone Joint J 2021;103-B(7 Supple B):91–97.

scholarly journals Neuromuscular Training Warm-up Prevents Acute Noncontact Lower Extremity Injuries in Children’s Soccer: A Cluster Randomized Controlled Trial

2021 ◽  
Vol 9 (4) ◽  
pp. 232596712110057
Author(s):  
Matias Hilska ◽  
Mari Leppänen ◽  
Tommi Vasankari ◽  
Sari Aaltonen ◽  
Pekka Kannus ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Lower Extremity ◽  
Outcome Measure ◽  
Controlled Trial ◽  
Intervention Group ◽  
Neuromuscular Training ◽  
Control Group ◽  
Injury Incidence ◽  
Warm Up ◽  
Randomized Controlled

Background: Prevention of sports injuries is essential in youth, as injuries are associated with less future physical activity and thus greater all-cause morbidity. Purpose: To investigate whether a neuromuscular training warm-up operated by team coaches is effective in preventing acute lower extremity (LE) injuries in competitive U11-U14 soccer players. Study Design: Randomized controlled trial; Level of evidence, 1. Methods: Twenty top-level U11 to U14 soccer clubs in Finland were randomized into intervention and control groups and assessed for 20 weeks. Participants included 1403 players (280 female, 1123 male; age range, 9-14 years): 673 players (44 teams) in the intervention group and 730 players (48 teams) in the control group. The intervention group team coaches were introduced to a neuromuscular training warm-up to replace the standard warm-up 2 to 3 times per week. The control teams were asked to perform their standard warm-up. Injury data collection was done via weekly text messages. The primary outcome measure was a soccer-related acute LE injury, and the secondary outcome measure was an acute noncontact LE injury. Results: A total of 656 acute LE injuries occurred: 310 in the intervention group and 346 in the control group. The overall acute LE injury incidence was 4.4 per 1000 hours of exposure in the intervention group and 5.5 per 1000 hours of exposure in the control group, with no significant difference between groups (incidence rate ratio [IRR], 0.82 [95% CI, 0.64-1.04]). There were 302 acute noncontact LE injuries: 129 in the intervention group (incidence, 1.8 per 1000 hours) and 173 in the control group (2.7 per 1000 hours). A significant reduction in acute noncontact LE injuries of 32% (IRR, 0.68 [95% CI, 0.51-0.93]) was observed in the intervention group compared with the control group. Furthermore, significant reductions in injury incidence in favor of the intervention group were seen in the subanalyses of acute noncontact LE injuries, leading to ≤7 days of time loss and fewer ankle and joint/ligament injuries. Conclusion: A neuromuscular training warm-up operated by team coaches was found to be effective in preventing acute noncontact LE injuries in children’s soccer, but this was not seen in all acute LE injuries. Clinical Relevance: We encourage children’s soccer coaches and health care professionals to implement neuromuscular training warm-up in youth sports. Registration: ISRCTN14046021 (ISRCTN registry).

scholarly journals High-Intensity Interval Training for Heart Failure Patients With Preserved Ejection Fraction (HIT-HF)-Rational and Design of a Prospective, Randomized, Controlled Trial

2021 ◽  
Vol 12 ◽  
Author(s):  
Benedikt A. Gasser ◽  
Maria Boesing ◽  
Raphael Schoch ◽  
Stefanie Brighenti-Zogg ◽  
Julia M. Kröpfl ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Ejection Fraction ◽  
Exercise Capacity ◽  
Controlled Trial ◽  
Control Group ◽  
Preserved Ejection Fraction ◽  
Randomized Controlled ◽  
Prospective Randomized Controlled Trial ◽  
High Intensity Interval ◽  
Disease Specific

Background: The pathophysiology of HF with preserved ejection fraction (HFpEF) has not yet been fully understood and HFpEF is often misdiagnosed. Remodeling and fibrosis stimulated by inflammation appear to be main factors for the progression of HFpEF. In contrast to patients with HF with reduced ejection fraction, medical treatment in HFpEF is limited to relieving HF symptoms. Since mortality in HFpEF patients remains unacceptably high with a 5-year survival rate of only 30%, new treatment strategies are urgently needed. Exercise seems to be a valid option. However, the optimal training regime still has to be elucidated. Therefore, the aim of the study is to investigate the effects of a high-intensity interval (HIT) training vs. a moderate continuous training (MCT) on exercise capacity and disease-specific mechanisms in a cohort of patients with HFpEF.Methods: The proposed study will be a prospective, randomized controlled trial in a primary care setting including 86 patients with stable HFpEF. Patients will undergo measurements of exercise capacity, disease-specific blood biomarkers, cardiac and arterial vessel structure and function, total hemoglobin mass, metabolic requirements, habitual physical activity, and quality of life (QoL) at baseline and follow-up. After the baseline visit, patients will be randomized to the intervention or control group. The intervention group (n = 43) will attend a supervised 12-week HIT on a bicycle ergometer combined with strength training. The control group (n = 43) will receive an isocaloric supervised MCT combined with strength training. After 12 weeks, study measurements will be repeated in all patients to quantify the effects of the intervention. In addition, telephone interviews will be performed at 6 months, 1, 2, and 3 years after the last visit to assess clinical outcomes and QoL.Discussion: We anticipate clinically significant changes in exercise capacity, expressed as VO2peak, as well as in disease-specific mechanisms following HIT compared to MCT. Moreover, the study is expected to add important knowledge on the pathophysiology of HFpEF and the clinical benefits of a training intervention as a novel treatment strategy in HFpEF patients, which may help to improve both QoL and functional status in affected patients.Trial registration:ClinicalTrials.gov, identifier: NCT03184311, Registered 9 June 2017.

scholarly journals Preemptive Treatment of Nausea and Vomiting of Pregnancy: Results of a Randomized Controlled Trial

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Caroline Maltepe ◽  
Gideon Koren
Keyword(s):  
Randomized Controlled Trial ◽  
High Risk ◽  
Controlled Trial ◽  
Nausea And Vomiting ◽  
Control Group ◽  
Preemptive Therapy ◽  
Previous Pregnancy ◽  
Preemptive Treatment ◽  
Randomized Controlled ◽  
Prospective Randomized Controlled Trial

Objectives. To determine whether the initiation of treatment (preemptive treatment) before the symptoms of nausea and vomiting of pregnancy (NVP) versus when the symptoms begin can improve the outcome in patients at a high risk for recurrence of severe NVP.Study Design. Prospective, randomized controlled trial.Results. Preemptive therapy conferred a significant reduction in HG as compared to the previous pregnancy (P=0.047). In the preemptive arm, there were 2.5-fold fewer cases of moderate-severe cases of NVP than those in the control group (15.4% versus 39.13%) in the first 3 weeks of NVP (P=0.05). In the preemptive group, significantly more women had their NVP resolved before giving birth (78.2% versus 50%) (P<0.002).Conclusions. Preemptive treatment with antiemetics is superior to the treatment that starts only when the symptoms have already occurred in decreasing the risk of severe forms of NVP.

scholarly journals The Proximal and Distal Effects of Blood Flow Restriction Therapy on Upper and Lower Extremity Strengthening: A Randomized Controlled Trial

2019 ◽  
Vol 7 (7_suppl5) ◽  
pp. 2325967119S0033
Author(s):  
Eric N. Bowman ◽  
Rami El-shaar ◽  
Heather Milligan ◽  
Greg Jue ◽  
Karen Mohr ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Blood Flow ◽  
Lower Extremity ◽  
Controlled Trial ◽  
Lower Extremities ◽  
Blood Flow Restriction ◽  
Control Group ◽  
Flow Restriction ◽  
Low Intensity ◽  
Randomized Controlled

Objectives: Blood flow restriction (BFR) therapy consists of low-intensity exercise performed under reduced venous return due to an inflatable tourniquet. This produces similar physiologic and clinical effects to high-intensity routines with less joint and tissue stress. Postoperative patients may benefit from more efficient rehabilitation. Proximal and distal effects of BFR have been evaluated, however, minimal literature exists on its use in orthopaedic conditions. The purpose of this study was to determine the effects of low-intensity BFR therapy both proximal and distal, in the upper and lower extremities. Methods: This was a prospective, randomized controlled trial of healthy subjects completing a standardized 6-week course of BFR therapy. Subjects were randomized to BFR therapy on one extremity or to a control group. Subjects were excluded for cardiac, pulmonary, or hematologic disease, pregnancy, or previous surgery in the extremity. Data collected at baseline and completion included: limb circumferences, isokinetic, and manual strength testing. Results: Forty subjects completed the protocol. Average age was 27.7 years; 54% were female. For both upper and lower extremity groups, a statistically significant increase was observed in manual and isokinetic strength both proximal and distal to the BFR tourniquet when compared to both the non-tourniquet extremity and the control group (p<0.05). Limb circumference significantly increased in the upper (p<0.01) and lower extremities (p=0.02). A significant increase in manual strength was noted in shoulder abduction and scaption, and hip extension and abduction even in the non-tourniquet BFR extremity compared to the control group (p<0.05). Conclusion: Low-intensity BFR therapy led to greater increases in muscle strength and hypertrophy. Similar strengthening effects were seen in proximal and distal muscle groups. Strength increases in the contralateral BFR extremity may corroborate a systemic effect. This study provides data to further evaluate the efficacy and safety of BFR therapy in operative and non-operative orthopaedic conditions. [Table: see text]

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