Reliability in One-Repetition Maximum Performance in People with Parkinson's Disease

Table 2

One-repetition maximum test results. The session 1-RM values are presented as mean ± standard deviation.

Exercise	First session (kg)	Second session (kg)	Mean session difference (kg) (95% CI)	T-test results	ICC (95% CI)	SEM
Knee extension	63.7 ± 28.1	67.7 ± 29.7	4.0 (1.9–6.2)	𝑃<0.001	.96 (.93–.97)	5.7 kg
Knee flexion	27.0 ± 12.7	29.4 ± 13.0	2.4 (0.2–4.7)	𝑃=0.042	.91 (.79–.96)	3.8 kg
Biceps curl	43.9 ± 15.6	46.6 ± 17.6	2.7 (1.2–4.1)	𝑃=0.001	.97 (.92–.98)	2.8 kg
Chest press	57.8 ± 20.6	60.1 ± 20.8	2.3 (−0.2–4.7)	𝑃=0.066	.95 (.90–.98)	4.3 kg

ICC: Intraclass Correlation Coefficient. SEM: Standard Error of Measurement which was calculated as: SEM: SD_baseline∗√(1−𝑟_test-retest).