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Effects of the Additional Weight on the Reaching Behavior of Pre Term Infants With Low Birth Weight

21 lutego 2019 zaktualizowane przez: Prof. Rodrigo Luiz Carregaro, University of Brasilia

Effects of the Additional Weight on the Reaching Behavior of Preterm Infants With Low Birth Weight: Randomized Controlled Trial

The effects of additional weight on early motor skills of infants have been increasingly studied. During the reaching behavior, the additional weight has been shown benefits in certain kinematic variables in full term and preterm infants. There is a growing interest in the study of populations at risk for motor development, especially considering interventions based on functional activities with the purpose of improving the neuromotor control, functional capacity and muscle strength. The aim of the present study is to investigate the effect of a functional training with additional weight in the reaching behavior of preterm infants with low birth weight and to compare the effects with a full term population. A controlled and randomized trial will be carried out with full term infants of adequate birth weight and preterm infants with low birth weight at 6 months of chronological or corrected age. The participants will be recruited by convenience from the charts of a Public Hospital. Participants will be randomly allocated into four groups: 1) adequate weight placebo group (AWPG); 2) adequate weight intervention group (AWIG); 2) low weight placebo group (LWPG) and 4) low weight intervention group (LWIG). . The assessor will be blinded (no knowledge of groups allocation). All infants will undergo a training program of eight sessions (2x/week; 4 weeks). The AWIG and LWIG will receive the training with an additional weight (characterized by a bracelet with a weight of 20% of the mass of the upper limbs)and the AWPG and LWPG will receive the same training, however, without the additional weight (only the bracelets).. All infants will be assessed in three different moments: 1) Pre-intervention: baseline, before the start of the intervention program; 2) Post-intervention: evaluation performed after the end of the program; and 3) Follow-up: evaluation performed seven days after the post-intervention assessment. The following kinematic dependent variables will be calculated: straightness index, mean velocity and motion units and electromyographic variables: pattern of activation and recruitment of muscle fibers - Biceps brachialis, Triceps brachialis, Deltoid and Pectoralis Major muscles; co-activation between biceps and triceps. The Qualisys Track Manager (QTM) and a wireless surface electromyography with 8-channels will be used. If normality assumptions are met, a mixed 2X2 ANOVA with repeated measures will be applied, in order to verify differences between the intervention programs, considering the dependent variables. Otherwise, non-parametric procedures of the same nature will be adopted. The significance will be set at 5% (P<0.05).

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

66

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

    • DF
      • Brasília, DF, Brazylia, 72220-275
        • Campus UnB Ceilandia

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

6 miesięcy do 7 miesięcy (Dziecko)

Akceptuje zdrowych ochotników

Tak

Płeć kwalifikująca się do nauki

Wszystko

Opis

Inclusion Criteria:

  • Adequate weight infants: healthy infants born with gestational age between 38-42 weeks and adequate birth weight (> 2500 grams);
  • Low weight infants: healthy infants born with gestational age between 32-36 weeks and 6 days and with low birth weight (between 1500 and 2500 grams).

Exclusion Criteria:

  • Anoxiated infants;
  • Signs of neurological impairment (eg, hypoxic-ischemic encephalopathies grade I, II and III, intracranial hemorrhage and neonatal seizures);
  • Congenital malformations (eg myelomeningocele and achondroplasias);
  • Syndromes (e.g Down Syndrome);
  • Sensorial alterations (visual and auditory);
  • Cardiorespiratory difficulties;
  • Orthopedic impairments (e.g, congenital clubfoot);
  • Apgar below 8 and 10 in the first and fifth minutes, respectively.
  • Infants who do not attend any of the evaluations, who do not complete at least 80% of the training or who cry uncontrollably, not allowing at least 10 reachings in the evaluations and training. Those that present intercurrences that may compromise normal neurosensorimotor development (for example, recurrent pneumonia, kidney and intestinal infection).

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Pojedynczy

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Training with additional weight
The infants will be submitted to a reaching behavior training program of 4 weeks, two times per week (totaling 8 sessions). During this training program, infants will use a bracelet with an additional weight characterized by 20% of the total mass of the upper limb placed on both wrists. This training will be adopted for the adequate weight intervention group and low weight intervention group.
The infants will be positioned in a reclined position. A bracelet with an additional weight (20% of the total mass of the upper limb) will be placed on both wrists. The training will happen 2x/week, during 4 weeks (8 sessions). An object will be used to stimulate the reaching behavior, which will be displayed by the examiner (positioned in front of the infant), and presented in the midline at shoulder height, considering the distance from the arm's length of the infant to the height of the wrist. The physiotherapist will draw the attention of the infant to the object, moving it momentarily so that the infant perceives it and reaches it. After reaching, the object will be carefully removed and resubmitted in order to elicit a new movement. The interval between each presentation will be of approximately 5 seconds. At least 10 movements will be stimulated. If the infant does not achieve the 10 reaches within the maximum interval of 15 minutes, the session will be terminated.
Komparator placebo: Training without additional weight
The infants will be submitted to a reaching behavior training program of 4 weeks, two times per week (totaling 8 sessions). During this training program, infants will use a bracelet without additional weight, placed on both wrists. This training will be adopted for the adequate weight placebo group and low weight placebo group.
The infants will be positioned in a reclined position. A bracelet without the additional weight will be placed on both wrists. The training will happen 2x/week, during 4 weeks (8 sessions). An object will be used to stimulate the reaching behavior, which will be displayed by the examiner (positioned in front of the infant), and presented in the midline at shoulder height, considering the distance from the arm's length of the infant to the height of the wrist. The physiotherapist will draw the attention of the infant to the object, moving it momentarily so that the infant perceives it and reaches the object. After reaching, the object will be carefully removed (or picked up) and resubmitted in order to elicit a new movement. The interval between each presentation of the object will be of approximately 5 seconds. At least 10 movements will be stimulated. If the infant does not achieve the 10 reaches within the maximum interval of 15 minutes, the session will be terminated.

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Movement unit
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
the number of maximum velocities between two minimum velocities, for which the difference was greater than 1 cm/s
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Electromyographic activity
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Magnitude of the muscle recruitment during the reaching behavior, measured in microvolts (root mean square - RMS)
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Mean Velocity
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
the ratio between the distance traveled during the reaching behavior and the duration of the movement
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Straightness Index
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
ratio between the minimal distance that could have been traveled in this trajectory (distance between the initial position of the hand and the object) and the distance traveled by the hand (total trajectory). The closer is this index to 1, the straighter is the trajectory.
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Grasping
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
categorical variable classified into (a) successful: when the infant was able to grasp the object with one or both hands; and (b) unsuccessful: when the infant touched the object, but did not grasp it
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Muscle coactivation
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Coactivation between the biceps and triceps muscle during the reaching behavior, measured in percentage (activation of the biceps/activation of the triceps)
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Transport Unit
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
The relative duration of the first movement unit in relation to total duration of reaching
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
Deceleration time
Ramy czasowe: Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)
The time necessary for the infant to decelerate the arm movement so that the hand touches an object. This period of the duration is measured from the time of appearance of the peak of velocity to the end of the reach.
Change from Pre-Intervention (baseline) compared to Post-Intervention (4 weeks) and Follow-up (7 days)

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Śledczy

  • Dyrektor Studium: Rodrigo Carregaro, PhD, University of Brasilia

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

12 stycznia 2018

Zakończenie podstawowe (Rzeczywisty)

15 września 2018

Ukończenie studiów (Rzeczywisty)

15 września 2018

Daty rejestracji na studia

Pierwszy przesłany

12 stycznia 2018

Pierwszy przesłany, który spełnia kryteria kontroli jakości

18 stycznia 2018

Pierwszy wysłany (Rzeczywisty)

19 stycznia 2018

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

25 lutego 2019

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

21 lutego 2019

Ostatnia weryfikacja

1 lutego 2019

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • Additional Weight Trial

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

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