Strength In Young Adults Research Articles

China: Jiapu Chemical — CaCO 3

Grip strength is routinely utilized in wide range of clinical setting as a physiological variable that is affected by a number of factors.We examined the relationships of forearm circumference, middle finger length, height, and BMI with handgrip strength measured among a group of young adults.This is a cross-sectional design among 517 young adults. Data was collected on one occasion using a hand held dynamometer for grip strength of dominant and non-dominant hands, commercial-scale for weight; tape measure for height, self report for age and gender.Forearm circumference, middle finger length and height showed significant positive correlation (P < 0.01) with grip strength across both the dominant and non-dominant limb. On the other hand, there was no significant correlation between BMI and grip strength for both limbs (P > 0.05).In determining age and gender specific nomogram as well as assessing intervention outcomes for handgrip strength in young adults, anthropometrics of forearm circumference, middle finger length and height should be considered.

THE EFFECT OF CHRONIC ASCORBIC ACID SUPPLEMENTATION ON STRENGTH FOLLOWING ISOTONIC STRENGTH TRAINING

1251 Evidence indicates that intense exercise causes membrane lipid peroxidation. The benefits of strength training may be compromised if significant peroxidative damage occurs in skeletal muscle. Ascorbic acid (AA) is a very effective anti-oxidant that protects lipids against damage from free radicals. AA also plays a role in connective tissue synthesis associated with strength gains. It has been hypothesized that AA taken chronically with strength training could produce greater strength gains, but this theory remains unproven. The purpose of this study was to measure the effect of chronic AA supplementation (1000 mg·d-1) on the development of muscular strength in young adults during an eight-week isotonic strength training program. Sixty-three subjects were divided into four groups: two strength training groups, one taking ascorbic acid (STAA, n=18) and one placebo (STPL, n=19); and two non-strength training control groups, one taking ascorbic acid (NSTAA, n=13) and one placebo (NSTPL, n=13). The AA and placebo were gel-encapsulated and administered double-blind. Isokinetic peak torque was measured at 60 °·s-1 before and after training in four muscle groups including the extensors and flexors of the knee and elbow. The relative changes ( M ± SD) in peak torque were compared by group. The STAA group showed the greatest relative change in all four muscle groups, but only in the knee extensors was the relative change in the STAA group (1.15 ± 0.16) significantly greater( p<.05) than the STPL group (1.03 ± 0.13). These results showed a clear advantage of AA supplementation over placebo in the development of knee extensor strength. The fact that other muscle groups were less affected demonstrates a need for further research.