Clinical Trial: Active Video Game and Potential to Cause Post-exercise Hypotension

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Energy Demand in a Video Game Active Session and Potencial to Promove Post Exercise Hypotension in Hypertensive Women

Brief Summary: The aim of this study was to determine the energy demand and the potential to promote reduce blood pressure of an active video game (AVG). Fourteen hypertensive (56.4 ± 7.5 years) held a session AVG and traditional sedentary video game sessions (SVG) and walk (WAL), as negative and positive controls, in order determined randomly. During the sessions, they were observed oxygen consumption and energy expenditure (EE). Blood pressure (BP) and cardiac autonomic modulation (CAM) were measured at rest and every 15 minutes of a 60 minute period of recovery activities. It was also applied a rating scale of pleasure (enjoyment scale).

Detailed Summary:

Volunteers: In a previous pilot study, seven women who had systolic blood pressure (SBP) of resting 128.9 ± 9.4 mmHg obtained a reduction to 116.9 ± 7.0 mmHg 60 minutes after a workout with AVG. These data resulted in an effect size of 1.05. Adopting an α error of 0.05 and statistical power of 0.95, estimated a minimum sample size of 12 volunteers. effectively participated in the study 14 hypertensive women aged between 47 and 68 years (56.4 ± 7.5 years). In addition to the diagnosis of hypertension, they should perform with pressure values of at least 130/90 mmHg and no greater than 160/110 mmHg in measurements made in the days before the study and on the day of data collection. They should still be postmenopausal women, being overweight or obesity grade I (BMI between 25 and 34.9 kg / m2), not be practicing systematic physical exercise for at least three months and not be suffering from labyrinthitis. They would be excluded from the study volunteers who initiate any antihypertensive treatment during the study period, presented difficulties to perform the AVG games or take him more than four weeks to complete all experimental procedures.

The research project was approved by the Research Ethics Committee of the Health Science Center - UFPB under the nº0621 / 14 protocol. After informed about all the procedures, the volunteers signed a Consent and Informed (IC) according to the resolution 466/12 of the National Health Council of Brazil.

Study design: the volunteers held an AVG session, an internal control session composed of sedentary video game (SVG) and an external control session consists of a walking exercise (WAL) with a minimum of 48 hours between sessions and order determined randomly. In all sessions, during activities, they were instrumented with portable gas analyzer for measuring energy e
Sponsor: Federal University of Paraíba

Current Primary Outcome: Blood Pressure [ Time Frame: Sixty minutes after AVG, SVG or WAL ]

Before the Start All such sessions, as requested Participants Were one Stay 15 Minutes Resting and sitting. After this period was checked PA Home. New Outlets Were measures immediately At the end of the session and experimental one every 15 minutes during hum 60 Minutes Recovery Period, with as sitting voluntary period During this ALL. These measures Were performed hair oscillometric method with the use of ambulatory monitoring apparatus PA (DYNAMAPA) following the V Brazilian Guidelines on BP ambulatory monitoring (ABPM) (ALESSI, A; BRANDÃO, A. ;. PIERIN et al, 2005). Were Made Three pressure sockets one measure and considered each The two values Closer.


Original Primary Outcome: Same as current

Current Secondary Outcome:

  • Quantifying the movements [ Time Frame: Forty minutes duration AVG, SVG or WAL ]
    It used an accelerometer brand Actigraph® GT3 X (Pensacola, USA) for evaluating the acceleration of the body, calibrated according to the manufacturer's specifications. The adopted time interval was 60 seconds and output data expressed as mean counts per minute. The unit was set at waist height, the right hand by a strap of elastic and adjustable buckle. At the end of the records, data were transferred to a computer and analyzed using the SAS 9.2 software (SAS Institute Inc., Cary, NC 25513). The adopted referêcia values were 0-99 counts / min-1, considered sedentary activity, 100-1951 counts / min-1, light activity, 1952-5724 counts / min-1 was moderate activity and from 5725 counts / min-1, seen vigorous activity, according Freedson et al
  • Cardiac autonomic modulation [ Time Frame: Sixty minutes after AVG, SVG or WAL ]
    Immediately after each measurement of BP was assessed by MAC HR variability, using a monitor label Polar RS800CX (PolarElectroOy, Kempele, Finland). The volunteers were seated and the record was made for a minimum of 10 minutes. Data were transferred to a computer provided with software of the same manufacturer and then transferred to the Kubios HRV software, version 2.0 (University of Kuopio, Finland). Data were analyzed in the time domain, being considered the average (RRM) and the standard deviation of the individual intervals RR (SDNN), the root mean square of successive differences between adjacent RR (RMSSD) and the percentage of successive differences between RR intervals greater than 50 ms (pNN50). In the frequency domain, they were considered low frequency bands (0:04 to 00:15 Hz) (LF) and high frequency (0.15 to 0.4 Hz) (AF). It was also adopted the low ratio frequency / high frequency as sympathetic-vagal balance (LF / HF).
  • Enjoyment scale [ Time Frame: Sixty minutes after AVG, SVG or WAL ]
    This scale has been validated for use in the adult population according to Graves et al. (2008). It consists of 18 items that assessed the level of pleasure / enjoyment from levels ranging from "I like" to "I hate" in that the higher the sum of these points, pleasure / enjoyment the activity performed provided. This scale was presented to participants at the beginning of each study session and the same to answer the end of each study session.
  • Energy expenditure [ Time Frame: Forty minutes duration AVG, SVG or WAL ]
    Was made by gas analysis through the analyzer portable lung gases K4b2 (Cosmed Copyritgh ©, Rome, Italy) validated the study by McLaughlin et al. This equipment enables verification in each breath, respiratory parameters, measuring the oxygen consumption (VO2) and carbon dioxide production during exercise


Original Secondary Outcome: Same as current

Information By: Federal University of Paraíba

Dates:
Date Received: October 3, 2016
Date Started: May 2015
Date Completion:
Last Updated: October 3, 2016
Last Verified: September 2016