Strength and Body Composition Changes in Recreationally Strength-Trained Individuals: Comparison of One versus Three Sets Resistance-Training Programmes

Table 1

Pre and posttest means ± sd for measured strength performances and body composition characteristics from both training groups. Confidence intervals (95%), effect sizes and power (95%) for statistically significant results are also provided.

Variables	Pretest	Posttest	Mean difference	95% confidence interval	Effect size	Power (%)
One-set group
Bench press (𝑁)	659.4±112.7	776.2±121.5	+116.8^∗	41.2 to 214.6	1.00	61.0
Biceps curl (𝑁)	402.8±54.8	485.1±48.0	+82.3^∗	39.2 to 125.4	1.60	85.0+
Shoulder press (𝑁)	412.6±71.5	527.2±74.5	+114.6^∗	52.9 to 175.4	1.57	85.0+
∑7SF (mm)	76.4±28.8	61.8±19.5	−14.6^∗	−5.6 to 34.8	0.61	31.7
Three-set group
Bench press (𝑁)	671.3±131.3	789.9±96.0	+118.6*	23.5 to 213.6	1.04	63.6
Biceps curl (𝑁)	421.4±44.1	499.8±77.4	+78.4*	−23.5 to 180.3	0.65	34.5
Shoulder press (𝑁)	418.5±49.0	510.6±62.7	+92.1*	45.1 to 139.2	1.65	85.0+
∑7SF (mm)	73.5±15.4	66.2±17.9	−7.3	−6.6 to 21.3	0.44	21.4

∗Result is statistically significant (𝑃≤0.05) on a one-tailed test.