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NCT ID: NCT03253900 Completed - Healthy Clinical Trials

Rowing Biomechanics - Effects of (In)Stability and Fatigue

RowBio
Start date: May 1, 2016
Phase: N/A
Study type: Interventional

Rowing simulators are frequently used by rowers, when on-water training is impossible or limited. While such devices are highly valuable to maintain rowers` fitness, a concern was raised about extensive simulator usage. It was postulated that it could lead to technique alterations due to different biomechanical properties compared to on-water rowing. Slide-based rowing simulators were designed to better simulate on-water conditions. The main aim of the study was to compare the differences in various kinematic and kinetic parameters during a short (20 s) all-out rowing bout and during a 2000-m simulated race, to get a better insight into how different rowing simulator designs affect biomechanics of rowing. Three different rowing simulators were used in this study: (1) a standard stable/fixed rowing simulator, (2) a slides based rowing simulator, i.e. horizontal plane unstable, and (3) a tilt board based rowing simulator; i.e. frontal plane unstable. The investigators hypothesised that rowing on different simulators will elicit different biomechanics, including forces, power output, arm and seat movement velocity and amplitude. Each of the participants completed the tests in all three interventions on separate sessions; random order of interventions. The three sessions took place 7-10 days apart. During each session, the participants completed the all-out 20-s trial first, then the simulated 2000-m race. The aforementioned biomechanical parameters were tracked throughout the trials to be compared between interventions later.

NCT ID: NCT03253835 Enrolling by invitation - Healthy Clinical Trials

Cardiac Blood Flow Patterns Associated With Left Ventricular Myocardial Damage

CMR-LHD
Start date: November 21, 2013
Phase: N/A
Study type: Observational

Various factors affect the performance of the heart: The contractile properties of myocardial muscle cells are the fundamental devices for translating tension-generation and shortening of the cardiac muscle into pressure-generation and blood volume ejection from the heart into the body. On the other hand, the performance of heart can be analyzed with respect to input and output of blood to/from the hollow cardiac muscle and evaluated in terms of the performance of a pump: With every heartbeat blood is sucked from a low-pressure system (veins) and pumped to the arterial high-pressure system via one-way valves, whereas efficiency, ejected blood volume, blood flow and pressures are linked by hemodynamic laws. Cardiac magnetic resonance (CMR) is the "gold standard technique" to determine cardiac function and muscle mass, as well as for non-invasive diagnosis of myocardial necrosis/fibrosis. Furthermore, new CMR imaging techniques enabling the measurement of myocardial magnetic relaxation times for characterization of myocardial morphology and the acquisition of time-resolved, three-dimensional blood flow velocity fields in the heart and surrounding vessels, represent promising tools for the evaluation of the interaction between myocardial morphology and cardiac function. Aim of this explorative study is to 1. identify myocardial pathology-associated blood flow patterns in the heart and surrounding great vessels, and 2. correlate characteristic blood flow patterns in the heat (existence of vortices, vorticity, vortex formation, propagation dynamics …) with myocardial injuries.

NCT ID: NCT03252223 Not yet recruiting - Healthy Clinical Trials

Ovarian Response to Recombinant Follicle Stimulating Hormone in Women With PCOS

Start date: September 1, 2017
Phase: Phase 4
Study type: Interventional

Women with PCOS suffer from anovulation and, as a result, infertility. Efforts to clinically induce ovulation in these women using follicle stimulating hormone (FSH) administered subcutaneously seemingly requires prolonged administration compared to that of ovulatory women without PCOS. The apparent differing ovarian responsiveness to FSH between PCOS and normal women has not been carefully studied. We propose to address this issue by performing a dose-response study and examine ovarian follicle (estrogen, E2) responses to FSH administered subcutaneously in women with PCOS compared to responses observed in normal women.

NCT ID: NCT03252015 Not yet recruiting - Healthy Clinical Trials

A Study of Multiple Doses of Lasmiditan in Healthy Participants

Start date: August 15, 2017
Phase: Phase 1
Study type: Interventional

The purpose of this study is to look at how much lasmiditan, study drug, gets into the blood stream and how long it takes the body to get rid of it. When drugs are taken together, one or all of the drugs used in combination may be affected. This study will also evaluate how much lasmiditan and its breakdown products get into the bloodstream after taking one dose alone and after taking lasmiditan together with a probe drug cocktail. Information about any side effects that may occur will also be collected. The study has two parts. Participants will only enroll in one part. This study will last about 25 days for group1 and 22 days for group 2, not including screening. Screening is required within 28 days prior to the start of the study. This study is for research purposes only and is not intended to treat any medical condition.

NCT ID: NCT03251339 Not yet recruiting - Healthy Clinical Trials

Safety and Immunogenicity of MSB11455 in Healthy Subjects

Start date: August 21, 2017
Phase: Phase 1
Study type: Interventional

Thie primary purpose of this study is to compare the immunogenicity and safety of MSB11455 and Neulasta in healthy adult subjects.

NCT ID: NCT03251248 Not yet recruiting - Healthy Clinical Trials

Pharmacokinetic/Pharmacodynamic Equivalence of MSB11455 in Healthy Subjects

Start date: August 21, 2017
Phase: Phase 1
Study type: Interventional

The purpose of the study is to compare the pharmacokinetics (PK) and pharmacodynamics (PD) of MSB11455 and Neulasta in healthy adult subjects.

NCT ID: NCT03250598 Recruiting - Healthy Clinical Trials

Study to Evaluate the Pharmacokinetics, Safety, and QTc Effect of AG-348 in Healthy Subjects of Japanese Origin and Non-Asian Origin

Start date: August 9, 2017
Phase: Phase 1
Study type: Interventional

The purpose of this Phase I, single-dose, open-label trial is to evaluate the pharmacokinetics, safety, and effect on QTc interval of AG-348 in healthy, adult Japanese and Non-Asian subjects. The study plans to evaluate 3 cohorts of a single oral dose of AG-348 in Japanese and Non-Asian subjects. Pharmacokinetic sampling will take place serially at specified times during conduct of the study.

NCT ID: NCT03250208 Not yet recruiting - Healthy Clinical Trials

Probiotics Effect on the Female Urinary Microbiome ProFUM Trial (Probiotics Effect on the Female Urinary Microbiome)

ProFUM
Start date: September 1, 2017
Phase: N/A
Study type: Interventional

The study will enroll healthy pre-menopausal female volunteers in the community. These subjects will act as their own controls. The subjects will collect voided urine and peri-urethral swab specimens daily for several months. They will also be asked to collect vaginal and peri-rectal swab specimens at various time points. Subjects will document various lifestyle variables daily. During the middle of the study, subjects will be randomized to probiotic vs placebo. Using bacterial culture and 16S rRNA gene sequencing, the study will measure the bacterial populations of several anatomic sites longitudinally: voided urine, peri-urethra, vagina, and peri-rectal. The study hypothesizes that oral probiotic usage will alter the bacterial populations and ratio of Lactobacillus to E. coli within each of these sites. Additionally, the study hypothesizes that the changes within each site will occur first in the rectum (i.e. GI tract), followed by the vagina, and then the urethra and bladder. Using the prospective design of daily sampling and lifestyle variable documentation, the study may be able to identify possible influences on microbiome stability within the sampled sites. The lifestyle variables recorded include: diet, medication usage, menstruation, sexual activity, and alcohol consumption. This pilot study will establish the variance of the outcome variables among healthy women and confirm the emergence of the probiotic with the recommended dose. With this information, future researchers will be able to calculate the power needed for a larger randomized trial. This trial would also randomize patients who may be at risk for a UTI to receive a probiotic vs placebo. The primary outcome measurement will be the change in the ratio of Lactobacillus to E. coli. As a secondary aim, the study will evaluate the incidence of UTI in the patients.

NCT ID: NCT03250039 Recruiting - Healthy Clinical Trials

Absorption, Metabolism, Excretion and Absolute Bioavailability

Start date: July 10, 2017
Phase: Phase 1
Study type: Interventional

This study will investigate the absorption, metabolism and excretion of 14C-PF 04965842 and characterize plasma, fecal and urinary radioactivity and identify any metabolites, if possible, of 14C PF-04965842 in humans. In addition, this study will provide a better understanding of the pharmacokinetic disposition of PF-04965842 by obtaining intravenous (IV) clearance and delineating the extent of oral absorption (absolute bioavailability (F) and fraction absorbed (Fa)).

NCT ID: NCT03249402 Not yet recruiting - Healthy Clinical Trials

A Study to Evaluate the Effect of Multiple Oral Doses of JNJ-42847922 on the Steady-state Pharmacokinetics of an Oral Contraceptive Containing Ethinyl Estradiol and Levonorgestrel in Healthy Female Adult Participants

Start date: August 13, 2017
Phase: Phase 1
Study type: Interventional

The purpose of this study is to evaluate the effect of multiple 40 milligram (mg) doses of JNJ-42847922 on the steady state pharmacokinetics (PK) of multiple doses of a combination oral contraceptive (OC) containing ethinyl estradiol (EE) and levonorgestrel (LN) in healthy female adult partcipants.