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Hatfield, DL, Stranieri, AM, Vincent, LM, and Earp, JE. Effect of a neoprene knee sleeve on performance and muscle activity in men and women during high-intensity, high-volume resistance training. J Strength Cond Res 35(12): 3300-3307, 2021-The purpose of this study was to assess the effects of a commercially available neoprene knee sleeve (KS) on exercise performance and muscle activity during an exhaustive leg press exercise. Twenty resistance-trained individuals, 11 men {21.0 +/- 2.2 years; 77.7 +/- 8.7 kg; 1 repetition maximum (1RM/body mass [BM]): 0.30 +/- 0.04} and 9 women (22.0 +/- 3.5 years; 66.1 +/- 9.1 kg; 1RM/BM: 0.30 +/- 0.04), all subjects (21.5 +/- 2.8 years; 72.5 +/- 10.5 kg; 1RM/BM: 0.30 +/- 0.04), participated in 3 testing sessions. The second and third sessions were performed using a counterbalanced and randomized design in which subjects exercised with (WS) or without (NS) KSs and performed 6 sets of leg press exercise at 80% of 1RM until failure with a 3-minute rest between sets. Number of repetitions, blood lactate (BL), heart rate (HR), rating of perceived exertion (RPE), and peak and average power were recorded after each set. Surface electromyography (EMG) of the right and left vastus lateralis muscles was also recorded to compare muscle activity between conditions. Significance was set at p <= 0.05, and values are presented as mean +/- SD. No significant differences were observed in the total number of repetitions for all sets (p = 0.3; WS 75.3 +/- 33.7, NS 79.8 +/- 34.3) and the number of repetitions per set between conditions (p <= 0.05) or between men and women. Similarly, no significance differences (p <= 0.05) were observed for BL, HR, RPE, or EMG per set between conditions or between men and women. These results suggest that wearing compressive neoprene KSs has no effect on improving performance and associated variables during high-load, high-volume lower-body resistance training. /=>/p> [ABSTRACT FROM AUTHOR]

The purpose of this study was to quantify the acute cardiometabolic responses to a novel training rope (TR) protocol in children. Fifteen boys (10.6 ± 1.4 years) were tested for peak oxygen uptake (...O2) on a treadmill and subsequently (2--7 days later) performed a progressive 10-minute protocol of 5 TR exercises (EX): EX1: standing side-to-side waves, EX2: seated alternating waves, EX3: standing alternating waves, EX4: jumping jacks, and EX5: double-arm slams. Participants performed 2 sets of each TR exercise for 30 seconds per set with a 30-second rest interval between sets and exercises. A 12.8-m TR (4.1 kg) was used for all trials, and a metronome was used to standardize cadence. Peak values for ...O2 and HR during the treadmill test were 47.4 ± 8.8 ml⋅kg-1⋅min-1 and 195.1 ± 6.6 b•min-1, respectively. During the TR protocol, mean ...O2 and HR significantly increased (p ≤ 0.05) from set 1 of EX1 (10.3 ± 2.6 ml⋅kg-1⋅min-1and 103.2 ± 11.6 b⋅min-1, respectively) to set 2 of EX5 (30.0 ± 3.9 ml⋅kg-1⋅min-1 and 168.6 ± 11.8 b⋅min-1, respectively). Percentage of peak ...O2 and peak HR values attained during the TR protocol ranged from 21.5 to 64.8% and from 52.9 to 86.4%, respectively. These descriptive data indicate that TR exercise can pose a moderate to vigorous cardiometabolic stimulus in children and with proper supervision and instruction may serve as a worthwhile complement to youth fitness programs. [ABSTRACT FROM AUTHOR]