The purpose of this investigation was to compare trunk muscle activity during stability ball and free weight exercises. Nine resistance-trained men participated in one testing session in which squats (SQ) and deadlifts (DL) were completed with loads of approximately 50, 70, 90, and 100% of one-repetition maximum (1RM). Isometric contractions during 3 stability ball exercises (quadruped (QP), pe...

The purpose of this study was to determine the reliability of the 1- and 3RM tests for the modified unilateral squat. Thirty untrained (22 women, 8 men) and 22 trained (12 women, 10 men) subjects participated in the study. The trained group had a minimum of 1 year lower-body training experience but had not participated in unilateral training prior to the study. After practicing proper technique...

Resistance exercise (RE) can lower blood glucose in people with type 2 diabetes (T2D). However, greater clarity is needed regarding the RE intensity and time required for this acute response. Therefore, aim of study was to compare responses on second day recovery from moderate vs. high-intensity women T2D. Twelve T2D (55.2 ± 4.0 years; 70.1 11.4 kg; 155.7 3.3 cm) performed two experimental sess...

The purpose of this study was to determine the effect of load on lower extremity biomechanics during the pull phase of the clean. Kinematic and kinetic data of the 3 joints of the lower extremity were collected while participants performed multiple sets of cleans at 3 percentages: 65, 75, and 85% of 1 repetition maximum (1RM). General linear models with repeated measures were used to assess the...

The purpose of this study was to assess the association of age with muscle mass and strength in a group of young adults before and after 12 weeks of progressive resistance training. Eight hundred twenty-six young males and females (age 24.34 +/- 5.69 yr, range 18-39 yr) completed a strictly supervised 12-week unilateral resistance training program of the nondominant arm. Isometric (maximal volu...

This study aimed to clarify the relationship between upper-body strength and bat swing speed in high-school baseball players and to examine the physical characteristics of home run hitters (sluggers). The subjects were 30 male high-school baseball players with national tournament experience at the Koshien Stadium. Bat swing speed exerted by full effort was measured with a microwave-type speed-m...

The effect of head positioning is often not accounted for when optimising performance in the back squat exercise. primary aim study was to identify most advantageous position peak power (PP), velocity (PV) and force (PF) A secondary favourable position. Twenty male rugby union players performed 1x3 repetitions at 75% one repetition maximum (1RM) determine their preferred pre-intervention positi...

This study aimed to evaluate whether lifting velocity can be used estimate the overhead press one repetition maximum (1RM) and explore differences in accuracy of 1RM between three velocity-based methods. Twenty-seven weightlifters (16 men 11 women) participated. The first session was test 1RM. second consisted an incremental loading during press. mean registered using a transducer attached barb...

The study investigated the concurrent validity and reliability of load-velocity relationship to predict one-repetition maximum (1RM) power clean from knee (PCK), high pull (HPK), mid-thigh (MTCP). For each exercise, 12 participants performed two 1RM sessions tests measure barbell’s at 30, 45, 60, 75, 90% 1RM. velocity recorded load was used establish linear regression equation and, consequently...