Sentences with phrase «in isokinetic»
In isokinetic movements, the dynamometer constantly adjusts the force resisting the joint movement so that the velocity remains constant.
https://www.strengthandconditioningresearch.com/ Not exact matches
Isokinetic Exercise — Isotonic exercise in which there is ACCOMMODATING RESISTANCE.
In addition to cardiovascular training, which builds endurance, strength training is essential in preseason to regaining eccentric force, power, and isokinetic strengtIn addition to cardiovascular training, which builds endurance, strength training is essential in preseason to regaining eccentric force, power, and isokinetic strengtin preseason to regaining eccentric force, power, and isokinetic strength.
On the other hand, many studies have reported velocity - specific strength gains after isokinetic strength training at different speeds, where the intent was maximal in all groups (Moffroid & Whipple, 1970; Caiozzo et al. 1981; Coyle et al. 1981; Jenkins et al. 1984; Garnica, 1986; Thomeé et al. 1987; Petersen et al. 1989; Bell et al. 1989; Ewing Jr et al. 1990), and also after constant load strength training at different speeds, where intent was maximal in all groups (Kaneko et al. 1983; Aaagaard et al. 1994; 1996; Moss et al. 1997; Ingebrigtsen et al. 2009).
Many studies have shown that high velocity isokinetic training leads to greater gains in strength when tested at high isokinetic velocities (Moffroid & Whipple, 1970; Caiozzo et al. 1981; Coyle et al. 1981; Jenkins et al. 1984; Garnica, 1986; Thomeé et al. 1987; Petersen et al. 1989; Bell et al. 1989; Ewing Jr et al. 1990), although this is not always true (Farthing & Chilibeck, 2003).
Most investigations have reported that long - term periods of Olympic weightlifting lead to increases in lower body strength, which are most commonly measured by reference to the 1RM back squat (Hoffman et al. 2004; Tricoli et al. 2005) but also isometric force production (Häkkinen et al. 1988; Haff et al. 2008) and isokinetic torque (Chaouachi et al. 2014).
In perhaps the most famous velocity - specificity study, Behm & Sale (1993) tasked subjects to perform ankle dorsiflexion training in two ways (isometric and isokinetic), where both conditions required the subjects to «move as rapidly as possible regardless of the imposed resistance.&raquIn perhaps the most famous velocity - specificity study, Behm & Sale (1993) tasked subjects to perform ankle dorsiflexion training in two ways (isometric and isokinetic), where both conditions required the subjects to «move as rapidly as possible regardless of the imposed resistance.&raquin two ways (isometric and isokinetic), where both conditions required the subjects to «move as rapidly as possible regardless of the imposed resistance.»
Kea et al. (2001) measured distance covered in the one - leg sideways hop (with a tape) as well as concentric and eccentric isokinetic hip abduction moments (with a dynamometer).
There is good evidence that high velocity isokinetic training leads to greater gains in strength when tested at high isokinetic velocities, and there is weaker evidence that the same effect occurs after constant load training.
There is good evidence that high velocity isokinetic training leads to greater gains in strength when tested at high isokinetic velocities (Moffroid & Whipple, 1970; Caiozzo et al. 1981; Coyle et al. 1981; Jenkins et al. 1984; Garnica, 1986; Thomeé et al. 1987; Petersen et al. 1989; Bell et al. 1989; Ewing Jr et al. 1990), but it does not always happen (Farthing & Chilibeck, 2003).
In one study, Remaud et al. (2010) assessed joint angle - specific changes in maximum voluntary isometric contraction (MVIC) torque and in neural drive after isotonic and isokinetic types of external load, using knee extension traininIn one study, Remaud et al. (2010) assessed joint angle - specific changes in maximum voluntary isometric contraction (MVIC) torque and in neural drive after isotonic and isokinetic types of external load, using knee extension traininin maximum voluntary isometric contraction (MVIC) torque and in neural drive after isotonic and isokinetic types of external load, using knee extension traininin neural drive after isotonic and isokinetic types of external load, using knee extension training.
Using eccentric - only knee extension training, Guilhem et al. (2013) assessed the effect of constant load and isokinetic external load types on joint - angle specific changes in torque and EMG amplitude.
Testing strength when muscles are changing length (such as during isokinetic dynamometry or during a conventional barbell lift) must necessarily involve a reduction in maximal force - generating capacity as a result of both of these relationships.
Similarly, peak moment ratios between muscle groups can be performed by setting the dynamometer to perform concentric isokinetic muscle actions in both directions, rather than concentric in one direction and eccentric in the other.
The set angular velocity can be zero, in which case the external resistance is isometric, or non-zero, in which case the external resistance is isokinetic.
In contrast, isokinetic training failed to improve torque at short muscle lengths (35 and 45 degrees), and also failed to increase EMG amplitude at long muscle lengths (85 degrees).
Nevertheless, Burnett et al. (2007) compared the ICC and COV of the EMG amplitude for both surface and fine wire electrodes in cervical extension between MVICs and SVICs using an isokinetic dynamometer.
Arokoski et al. (2002) found that patients with hip osteoarthritis (mean age 56 years) displayed an isometric and an isokinetic hip extension moment that was 68 — 87 % of that found in healthy age - matched controls.
Comparing two different velocities using an isokinetic machine deadlift, Noe et al. (1992) found no differences in erector spinae muscle activity between two different bar speeds (45.7 vs. 30.5 cm / s).
This may reflect the poor relationship between the external load type used in testing (isokinetic) and in sprinting (constant load).
Wiktorsson - Moller et al. (38) found that massage induced a decrease in quadriceps isometric force and hamstrings isokinetic force, which was contradictory to the results found in the present study.
Comparing two different velocities during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in quadriceps muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
They noted that the peak in gluteus maximus muscle activity during the isokinetic lift occurred at 83 % of lift height, which was after the point at which peak force was produced at 67 % of lift height.
Comparing two different velocities during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in latissimus dorsi muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
It is not immediately clear what factor is responsible for the differences in the findings between studies, as both isoinertial and isokinetic external loading and both eccentric - only and concentric - only muscle actions have led to significant increases in pennation angle.
Comparing two different velocities during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in gluteus maximus muscle activity between the two speeds used (45.7 vs. 30.5 cm / s).
Comparing Olympic weightlifters and untrained control subjects during an isokinetic machine deadlift test, Noe et al. (1992) found no differences in latissimus dorsi muscle activity between the two groups.