Sentences with phrase «during back extensions»

Gluteus maximus EMG amplitude can be enhanced during back extensions by performing the exercise in a position of knee flexion and / or in hip external rotation, and by adding external loads (such as by wearing a weighted vest or holding a dumbbell or weight plate).

Similarly, since previous studies have found that knee flexion leads to increased gluteus maximus EMG amplitude through active insufficiency of the hamstrings, placing the knee into flexion during back extensions might also be expected to increase gluteus maximus EMG amplitude during back extensions.

The role of pelvic restriction on gluteus maximus EMG amplitude during back extensions or other exercises (such as seated lumbar extension machines) remains unclear.

Pelvic restriction seems to have little effect on hamstrings EMG amplitude during back extensions.

It is most commonly seen at the top position of a deadlift, but it can also be seen during back extensions, where lifters often go above the healthy movement range of the joint and expose themselves to the risk of injury.

However you choose to hold your arms, they should never help you raise your upper body during the back extension — your arms and hands should be totally relaxed.

Not exact matches

During this period, the Federal Reserve tried to support employment by cutting its federal funds rate target nearly to zero; by creating a number of special liquidity facilities to support the extension of credit; and by engaging in a large scale asset purchase program, buying Treasuries, agency debt and agency mortgage - backed securities.

For all we know they may just be waiting until Alexis gets back and signs his contract for them to announce the contract extensions or maybe they will announce it during the next kit launch as a promotional deal if we sign another player by then and is just going to be apart of the promotion.

My concern is why, if Wenger wants the player and the player does not seem keen to sign an extension to the current deal with the Hammers that is due to run out in the summer, did the Gunners not try to sign the centre back during the summer transfer window?

Having come back to draw 2 - 2 from a 2 - 0 deficit against Serie A champions Juventus during their Champions League Round of 16 ties first leg in Turin, Tottenham will now be looking to ensure that their young midfield talent Erik Lamela signs a new contract extension deal which would keep him at the club for longer.

Here, we first introduce various quantification metrics based on the extension of co-activation pattern (CAP) analysis, a recently proposed point - process analysis that tracks state alternations at each individual time frame and relies on very few assumptions; then apply these proposed metrics to quantify changes of brain dynamics during a sustained 2 - back working memory (WM) task compared to rest.

Furthermore, if you use narrower grip, you'll be able to stretch the lower lats more during the extension and pull the elbows farther back for the contraction.

Comparing the back squat with knee extensions, Signorile et al. (1994) found that muscle activity was greater during back squats than during knee extensions but Andersen et al. (2006) found the opposite results and Escamilla et al. (1998) found that muscle activity differences depended upon knee angle.

once the bar has passed the knees, the knees are pushed forward back under the bar to allow a powerful upward extension during the second pull (this action is also called scoop or double - knee bent)

If the back angle is not kept constant off of the floor during the first pull and the hips rise too quickly, the bar can be left «hanging» out in front when it gets to the hip, which then forces the athlete into an excessively horizontal hip extension launching the bar way out front.

Da Silva et al. (2009a) investigated the effects of pelvic stabilization and degree of hip flexion on hamstring EMG amplitude during horizontal back extensions.

Nuzzo et al. (2008) compared the upper (at L1) and lower (at L5) erector spinae muscle activity during the birddog, hip bridge with feet on swiss ball, and back extension from a swiss ball.

This slight difference in function might be discerned when the feet are internally or externally rotated during certain hip extension exercises like the back extension in order to place more emphasis upon one set of hamstrings or the other (Fiebert et al. 1992; Fiebert et al. 1997).

Moreover, the hip extension moment measured during deadlifts appears to be slightly greater than that measured in the traditional back squat and this may be a result of the greater peak external moment arm at the hip, (c.f. Escamilla et al. 2000; Escamilla et al. 2001b).

They found a non-significant trend for hamstrings EMG amplitude to be increased during horizontal back extensions with pelvic restriction.

Studies have reported that several factors affect the magnitude of the hip extension moment measured during back squats in addition to the type of subjects and the percentage of 1RM used, including stance width, technique, bar speed and squat depth.

A load position that allows individuals to sit back further during the squat also appears to lead to a greater hip extension moment (Fry et al. 2003; Biscarini et al. 2011; Lorenzetti et al. 2012; Gillette & Stevermer, 2012).

As relative load increases during performance of the back squat exercise, the ratio of the net hip extension moment to the net knee extension moment also increases.

Whether the seated position of the lumbar extension machine makes these findings impossible to compare with those taken during the horizontal back extension in the prone position, however, is unclear.

These studies are supported by observations that hip extension moments also increase with increasing relative load during the back squat (Bryanton et al. 2012).

When exploring knee flexion during dynamic back extensions, Park and Yoo (2014) also found that increased knee flexion led to increased gluteus maximus EMG amplitude.

Mayer et al. (2002) investigated the effect of hip rotation angle on gluteus maximus EMG amplitude during 45 - degree back extensions.

Thus, during a specific unit of time, students are moving back and forth between the teacher directed group and independent work on extension activities.

With the constant love for travel always calling back to her, Mickela created the Bare Feet ® project in 2010 as an extension to what she had already been doing during her trips abroad and locally.

Instead, turn them on only as you need them and, in the case of rarely used extensions like bulk image downloaders or plugins that you use to compare prices during quarterly Steam game sales, turn them back off when you're not using them.