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The Effects of Blood Flow Restrictio...

Pena, Mitchell.

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The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength./
Author:	Pena, Mitchell.
other author:	Grajeda, Joshua
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	84 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
Contained By:	Dissertations Abstracts International82-06B.
Subject:	Physical therapy. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28257461
ISBN:	9798557003056

The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength.
Pena, Mitchell.

The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 84 p.

Source: Dissertations Abstracts International, Volume: 82-06, Section: B.

Thesis (D.P.T.)--Azusa Pacific University, 2020.

This item must not be sold to any third party vendors.

Background. Research has shown that low load restriction training (LLRT) when paired with blood flow restriction (BFR) has had comparable hypertrophic gains to high load resistance training (HLRT) (Lixandrao et al., 2017). In addition, unilateral strength training has resulted in significant, though moderate, strength gains of the contralateral untrained limb (Manca, Dragone, Dvir, & Deriu, 2017). This principle also applies to strength training with BFR (Bowman et al., 2019). Purpose. The purpose of this study was to examine the efficacy of BFR training for improving contralateral upper extremity strength compared to HLRT. Research Description. A randomized controlled trial (RCT) was conducted comparing BFR training with LLRT to HLRT without BFR on strength and circumference of the contralateral untrained limb. Study Design. Factorial design RCT. Methods. Healthy adult participants were randomly allocated into a treatment group (BFR training) or control group (HLRT). Participants were tested for (a) bilateral upper extremity internal and external rotation, (b) scaption, (c) hand grip strength, and (d) bicep girth before and after three weeks of training using a dynamometer and tape measure. Exercises consisted of (a) isotonic external rotation, (b) internal rotation, and (c) scaption resistance exercises performed at 50% occlusion pressure of the contralateral upper extremity. The control group performed three sets of 10 repetitions while the experimental group performed four sets of 30-15-15-15 repetitions two times a week. A repeated measures ANOVA for (a) bilateral bicep girth measurement, (b) bilateral isometric rotator cuff muscle strength, and (c) bilateral isometric forearm muscle strength was used to find emerging trends. Results. Data analysis demonstrated a significant increase in contralateral external rotation strength in BFR group compared to control group (p = 0.038). Additionally, there was an increase in strength in all muscle groups over time in both groups. Discussion. The results indicated a positive impact of BFR training on contralateral upper extremity strength in the rotator cuff. Current literature has supported the use of BFR to increase strength and hypertrophy in contralateral lower extremity. This study has extended these findings to the contralateral upper extremity. Further research is recommended with a larger sample size to confirm these findings. Conclusion. BFR with LLRT had a significant effect on contralateral external rotation strength compared to the control group. These findings have important implications for patient populations with limited use of their upper extremities in order to prevent the progression of weakness and atrophy. Further research is warranted due to limited training time to establish the effects on global upper extremity strength.

ISBN: 9798557003056Subjects--Topical Terms:

588713
Physical therapy.
Subjects--Index Terms:

BFR

The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength.
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100 1 $a Pena, Mitchell. $3 3557636
245 1 4 $a The Effects of Blood Flow Restriction on Contralateral Upper Extremity Strength.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 84 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
500 $a Advisor: Shore, Susan.
502 $a Thesis (D.P.T.)--Azusa Pacific University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Background. Research has shown that low load restriction training (LLRT) when paired with blood flow restriction (BFR) has had comparable hypertrophic gains to high load resistance training (HLRT) (Lixandrao et al., 2017). In addition, unilateral strength training has resulted in significant, though moderate, strength gains of the contralateral untrained limb (Manca, Dragone, Dvir, & Deriu, 2017). This principle also applies to strength training with BFR (Bowman et al., 2019). Purpose. The purpose of this study was to examine the efficacy of BFR training for improving contralateral upper extremity strength compared to HLRT. Research Description. A randomized controlled trial (RCT) was conducted comparing BFR training with LLRT to HLRT without BFR on strength and circumference of the contralateral untrained limb. Study Design. Factorial design RCT. Methods. Healthy adult participants were randomly allocated into a treatment group (BFR training) or control group (HLRT). Participants were tested for (a) bilateral upper extremity internal and external rotation, (b) scaption, (c) hand grip strength, and (d) bicep girth before and after three weeks of training using a dynamometer and tape measure. Exercises consisted of (a) isotonic external rotation, (b) internal rotation, and (c) scaption resistance exercises performed at 50% occlusion pressure of the contralateral upper extremity. The control group performed three sets of 10 repetitions while the experimental group performed four sets of 30-15-15-15 repetitions two times a week. A repeated measures ANOVA for (a) bilateral bicep girth measurement, (b) bilateral isometric rotator cuff muscle strength, and (c) bilateral isometric forearm muscle strength was used to find emerging trends. Results. Data analysis demonstrated a significant increase in contralateral external rotation strength in BFR group compared to control group (p = 0.038). Additionally, there was an increase in strength in all muscle groups over time in both groups. Discussion. The results indicated a positive impact of BFR training on contralateral upper extremity strength in the rotator cuff. Current literature has supported the use of BFR to increase strength and hypertrophy in contralateral lower extremity. This study has extended these findings to the contralateral upper extremity. Further research is recommended with a larger sample size to confirm these findings. Conclusion. BFR with LLRT had a significant effect on contralateral external rotation strength compared to the control group. These findings have important implications for patient populations with limited use of their upper extremities in order to prevent the progression of weakness and atrophy. Further research is warranted due to limited training time to establish the effects on global upper extremity strength.
590 $a School code: 1323.
650 4 $a Physical therapy. $3 588713
650 4 $a Therapy. $3 3343697
650 4 $a Physiology. $3 518431
653 $a BFR
653 $a Blood flow restriction
653 $a Contralateral strength
653 $a Cross education
653 $a Resistance training
653 $a Upper extremity strength
690 $a 0382
690 $a 0212
690 $a 0719
700 1 0 $a Grajeda, Joshua $e joint author $3 3557637
700 1 0 $a Ramirez, Bianca $e joint author $3 3557638
700 1 0 $a Atkins, J. Tyler $e joint author $3 3557639
710 2 $a Azusa Pacific University. $b Physical Therapy. $3 3286106
773 0 $t Dissertations Abstracts International $g 82-06B.
790 $a 1323
791 $a D.P.T.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28257461