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Gammal 2018-12-20, 22:45   #601
King Grub
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Increases in muscle size and strength similar to those with high resistance load can be achieved by combining lower-loads with continuous blood flow restriction (BFR). However, high ratings for distress have been reported for continuous BFR. Therefore, we investigated the efficacy (metabolic stress) of BFR applied only during intervals in resistance exercise. Seven healthy men performed three 1-min sets of plantar flexion (30 reps/min), with 1-min rest intervals under 4 conditions: low-load resistance exercise (L, 20 % 1-RM) without BFR (L-noBFR), L with BFR during exercise sets (L-exBFR), L with BFR during resting interval periods (L-intBFR), and L with continuous BFR during both exercises and intervals (L-conBFR). Based on the results of the first experiment, we performed additional protocols using moderate-load (M, 40% 1-RM) with intermittent (exercises and intervals) BFR (M-exBFR and M-intBFR). Intramuscular metabolic stress, defined as phosphocreatine and intramuscular pH decrease, was evaluated by 31P-magnetic resonance spectroscopy. Perceived exertion (RPE) was also assessed. At the end of exercise, total phosphocreatine and intramuscular pH decrease were similar in L-noBFR, L-intBFR and L-exBFR, and significantly less than those in L-conBFR (p<0.05). By contrast, those changes in M-intBFR but in M-exBFR were similar to those in L-conBFR. Nevertheless, RPE was lower in M-intBFR than in both M-exBFR and L-conBFR (p<0.05). The effect of intermittent BFR during exercise might be insufficient for metabolic stress when using a low-load. However, effective metabolic stress for muscular adaptation could be obtained by moderate-load resistance exercise with BFR during intervals with less ischemic duration and discomfort.
Appl Physiol Nutr Metab. 2018 Dec 19. Resistance training with interval blood flow restriction effectively enhances intramuscular metabolic stress with less ischemic duration and discomfort.
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Gammal 2019-01-23, 09:50   #602
King Grub
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OBJECTIVE:

To describe the successful rehabilitation of a distal biceps brachii tendon reattachment following an acute traumatic tendon rupture.

CLINICAL FEATURES:

A 30-year-old weightlifter presented five days post-op after a left distal biceps tendon repair. A three month one pound weight-restriction was recommended by the attending surgeon. Active and passive elbow and wrist range of motion were markedly reduced with profuse post-operative swelling and bruising noted upon initial inspection.

INTERVENTION AND OUTCOME:

An accelerated treatment program was prescribed that included soft tissue therapy, scar mobilization, laser therapy, kinesiology tape and rehabilitative exercise. A novel training method known as blood flow restriction (BFR) training was utilized throughout the rehabilitative process to maximize recovery and retain muscle mass and strength. The weightlifter returned to near pre-injury activity level after 3.5 months. Treatment, exercise and BFR protocols are provided.
J Can Chiropr Assoc. 2018 Dec;62(3):193-201. Post-operative rehabilitation of a distal biceps brachii tendon reattachment in a weightlifter: a case report.
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Gammal 2019-03-06, 22:04   #603
Erik_Hellström
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Ni som kört sådana här upplägg för vader:
Vart fäster man strypningen lämpligast? Över knät, under knät eller är det att föredra högt upp på låren i dessa lägen också?

Finns det rentav fördelar att strypa hela benet om man tex kör vader sist i ett pass med BFR?
Säg att man inleder med benspark+lårcurl för att sedan ta vader sist. Blodet kommer begränsas ut ur benet som helhet, och orsaka en fortsatt hög metabol stress för låren som redan fått sig en omgång.
Kan den ytterligare förlängda syrefattiga miljön vara till fördel/nackdel för den träning man redan utsatt framsida/baksida-lår för?
Eller är det helt enkelt bäst att strypa så nära inpå den muskel som man ämnar utsätta för behandlingen?

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Gammal 2019-03-07, 16:35   #604
Ett Orm
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Kanske dags för en artikel om strypning?
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Gammal 2019-03-08, 05:29   #605
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kanske dags för en artikel om strypning?
+1
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Gammal 2019-03-08, 07:39   #606
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+1
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Gärna med en paragraf eller två om ev. risker också vid felaktigt utförande (rhabo osv).
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Gammal 2019-03-15, 06:32   #607
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Exercise with blood flow restriction: an effective alternative for the non-pharmaceutical treatment for muscle wasting.

Abstract
Significant muscle wasting is generally experienced by ill and bed rest patients and older people. Muscle wasting leads to significant decrements in muscle strength, cardiorespiratory, and functional capacity, which increase mortality rates. As a consequence, different interventions have been tested to minimize muscle wasting. In this regard, blood flow restriction (BFR) has been used as a novel therapeutic approach to mitigate the burden associated with muscle waste conditions. Evidence has shown that BFR per se can counteract muscle wasting during immobilization or bed rest. Moreover, BFR has also been applied while performing low intensity resistance and endurance exercises and produced increases in muscle strength and mass. Endurance training with BFR has also been proved to increase cardiorespiratory fitness. Thus, frail patients can benefit from exercising with BFR due to the lower cardiovascular and join stress compared with traditional high intensity exercises. Therefore, low intensity resistance and endurance training combined with BFR may be considered as a novel and attractive intervention to counteract muscle wasting and to decrease the burden associated with this condition.

© 2019 The Authors Journal of Cachexia, Sarcopenia and Muscle published by John Wiley & Sons Ltd on behalf of Society on Sarcopenia, Cachexia and Wasting Disorders.


https://www.ncbi.nlm.nih.gov/pubmed/30816026
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Gammal 2019-05-08, 21:21   #608
King Grub
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Purpose:

High-load resistance exercise contributes to maintenance of muscle mass, muscle protein quality, and contractile function by stimulation of muscle protein synthesis (MPS), hypertrophy and strength gains. However, high loading may not be feasible in several clinical populations. Low-load blood flow restricted resistance exercise (BFRRE) may provide an alternative approach. However, the long-term protein synthetic response to BFRRE is unknown and the myocellular adaptations to prolonged BFRRE are not well-described.

Methods:

To investigate this, 34 healthy young subjects were randomized to 6 weeks of either low-load BFRRE, HLRE, or non-exercise control (CON). Deuterium oxide (D2O) was orally administered throughout the intervention period. Muscle biopsies from m. vastus lateralis were collected before and after the 6-week intervention to assess long-term myofibrillar MPS and RNA synthesis as well as muscle fiber-type specific cross-sectional area (CSA), satellite cell content, and myonuclei content. Muscle biopsies were also collected in the immediate hours following single-bout exercise to assess signaling for muscle protein degradation. Isometric and dynamic quadriceps muscle strength was evaluated before and after the intervention.

Results:

Myofibrillar MPS was higher in BFRRE (1.34 %/day, p < 0.01) and HLRE (1.12 %/day, p < 0.05) compared to CON (0.96 %/day) with no significant differences between exercise groups. Muscle RNA synthesis was higher in BFRRE (0.65 %/day, p < 0.001) and HLRE (0.55 %/day, p < 0.01) compared to CON (0.38 %/day) and both training groups increased RNA content, indicating ribosomal biogenesis in response to exercise. BFRRE and HLRE both activated muscle degradation signaling. Muscle strength increased 6-10 % in BFRRE (p < 0.05) and 13-23 % in HLRE (p < 0.01). Dynamic muscle strength increased to a greater extent in HLRE (p < 0.05). No changes in type I and type II muscle fiber-type specific CSA, satellite cell content, or myonuclei content were observed.

Conclusions:

These results demonstrate that BFRRE increases long-term muscle protein turnover, ribosomal biogenesis, and muscle strength to a similar degree as HLRE. These findings emphasize the potential application of low-load BFRRE to stimulate muscle protein turnover and increase muscle function in clinical populations where high loading is untenable.
Six Weeks of Low-Load Blood Flow Restricted and High-Load Resistance Exercise Training Produce Similar Increases in Cumulative Myofibrillar Protein Synthesis and Ribosomal Biogenesis in Healthy Males. Front. Physiol. 08 May 2019.
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Gammal 2019-09-14, 15:47   #609
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6530612/

Patterson SD, Hughes L, Warmington S, et al. Blood Flow Restriction Exercise Position Stand: Considerations of Methodology, Application, and Safety. Front Physiol. 2019;10:533. Published 2019 May 15. doi:10.3389/fphys.2019.00533

BFR-RE = voluntary resistance exercise
BFR-AE = aerobic exercise




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Gammal 2019-11-19, 20:22   #610
kraftsport
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Hur går det med strypandet? Tänkte prova lite på armar/underarmar. Kan någon tipsa om bra strypband/knälindor man kan använda? Helst 5cm breda eller så after vad jag har läst.
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Gammal 2019-11-21, 22:39   #611
Erik_Hellström
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Hur går det med strypandet? Tänkte prova lite på armar/underarmar. Kan någon tipsa om bra strypband/knälindor man kan använda? Helst 5cm breda eller så after vad jag har läst.
Kört en del själv med intressanta resultat. Använder mig av dessa:
https://www.stasband.se/produkt/kit/

Pneumatiska band, smala för armar och bredare för låren.
Lätt att sätta likvärdigt tryck på båda sidorna, och enkelt att replikera från pass till pass.

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Gammal 2020-04-24, 11:12   #612
King Grub
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AIM:

To investigate if short-term block-structured training consisting of alternating weeks of blood-flow restricted low-load resistance training (BFR-RT) and conventional free-flow heavy-load resistance training (HL-RT) leads to superior gains in mechanical muscle function, myofiber size and satellite cell (SC) content and myonuclear number compared to HL-RT alone.

METHODS:

Eighteen active young participants (females/males: 5/13, 23±1.2yrs) were randomized to 6-weeks (22 sessions) of lower limb HL-RT (70-90% 1-RM) (HRT, n= 9) or block-structured training alternating weekly between BFR-RT (20% 1-RM) and HL-RT (BFR-HRT, n= 9). Maximal isometric knee extensor strength (MVC) and muscle biopsies(VL)were obtained pre and post training to examine changes in muscle strength, myofiber cross-sectional area (CSA), myonuclear (MN) number and satellite cell (SC) content.

RESULTS:

MVC increased in both training groups (BFR-HRT: +12%, HRT: +7%; P< 0.05). Type II myofiber CSA increased similarly (+16%) in BFR-HRT and HRT (P< 0.05) while gains in type I CSA were observed following HRT only (+12%, P< 0.05). In addition, myonuclear number remained unchanged, whereas SC content increased in type II myofibers following HRT (+59%, P< 0.05).

CONCLUSIONS:

Short-term alternating BFR-RT and HL-RT did not produce superior gains in muscle strength or myofiber size compared to HL-RT alone. Noticeably however, conventional HL-RT could be periodically replaced by low-load BFR-RT without compromising training-induced gains in maximal muscle strength and type II myofiber size, respectively.
J Appl Physiol (1985). 2020 Apr 23. Effects of alternating blood-flow restricted training and heavy-load resistance training on myofiber morphology and mechanical muscle function.
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Gammal 2020-04-26, 14:59   #613
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Gammal 2020-05-11, 12:32   #614
King Grub
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This study examined the effect of blood flow restriction (BFR) with 2 different types of cuffs on peak power output (PP), mean power output (MP), peak bar velocity (PV), and mean bar velocity (MV) in the bench press exercise (BP). Fourteen healthy strength-trained male athletes (age = 27.6 ± 3.5 years; body mass = 84.1 ± 8.0 kg; height = 175.8 ± 6.7 cm; BP 1 repetition maximum [RM] = 138.6 ± 17.8 kg) performed 3 different testing protocols as follows: without BFR (NO-BFR), BFR with a narrow cuff (BFRNARROW), and BFR with a wide cuff (BFRWIDE) in a randomized crossover design. During all sessions, subjects performed one set of 3 repetitions of the BP exercise using 70% 1RM. Cuff pressure was set to approximately 90% full arterial occlusion pressure of the upper limb at rest. Analyses of variance showed an increase in PP (by 21%, p < 0.01; effect size [ES] = 1.67), MP (by 16%, p < 0.01; ES = 0.93), PV (by 22%, p < 0.01; ES = 1.79), and MV (by 21%, p < 0.01; ES = 1.36) during BFRWIDE compared with NO-BFR and a significant increase in PP (by 15%, p < 0.01; ES = 1.07), MP (by 17%, p < 0.01; ES = 0.78), PV (by 18%, p < 0.01; ES = 1.65), and MV (by 13% p < 0.01; ES = 1.00) during BFRWIDE compared with BFRNARROW. There were no significant differences in any of the variable between NO-BFR and BFRNARROW. The results of the study indicate that short-term BFR training increases power output and bar velocity during the BP exercise. However, only BFRWIDE significantly influenced bar velocity and power output, which indicates that the width of the cuff is a critical factor determining acute exercise adaptation during BFR resistance training.
J Strength Cond Res. 2020 May 5. Short-Term Blood Flow Restriction Increases Power Output and Bar Velocity During the Bench Press.
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Gammal 2020-08-20, 12:54   #615
King Grub
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Att lämna banden på i setvilan aktiverar gener för muskeltillväxt, men skadar DNA.

Citat:
Purpose:

Blood flow restriction (BFR) with low-intensity resistance training has been shown to result in hypertrophy of skeletal muscle. In this study, we tested the hypothesis that BFR during the rest periods between acute, high-intensity resistance exercise sessions (70% of 1 repetition maximum, 7 sets with 10 repetitions) enhances the effects of the resistance training.

Methods:

A total of 7 healthy young men performed squats, and between sets BFR was carried out on 1 leg while the other leg served as a control. Because BFR was applied during rest periods, even severe occlusion pressure (approximately 230 mm Hg), which almost completely blocked blood flow, was well-tolerated by the participants. Five muscle-specific microRNAs were measured from the biopsy samples, which were taken 2 h after the acute training.

Results:

Doppler data showed that the pattern of blood flow recovery changed significantly between the first and last BFR. MicroRNA-206 levels significantly decreased in the BFR leg compared to the control. The mRNA levels of RAC-β serine/threonine-protein kinase v22, nuclear respiratory factor 1, vascular endothelial growth factor, lupus Ku autoantigen protein p70 genes (p < 0.05), and paired box 7 (p < 0.01) increased in the BFR leg. The protein levels of paired box 7, nuclear respiratory factor 1, and peroxisome proliferator-activated receptor γ coactivator 1α did not differ between the BFR leg and the control leg.

Conclusion:

Data revealed that BFR, during the rest periods of high-load resistance training, could lead to mRNA elevation of those proteins that regulate angiogenesis, mitochondrial biogenesis, and muscle hypertrophy and repair. However, BFR also can cause DNA damage, judging from the increase in mRNA levels of lupus Ku autoantigen protein p70.
J Sport Health Sci. Aug 27;S2095-2546(19)30105-X. Blood flow restriction in human skeletal muscle during rest periods after high-load resistance training down-regulates miR 206 and induces Pax7.
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