TABLE 2.

F Values From Regression Analyses of Gender and Training Group Interactions

	Heart Rate, bpm	ln SDRR	ln Low-Frequency Power	ln High-Frequency Power
Predictors of heart rate and RRVa
Group	0.55	0.24	2.03	0.06
Position	42.56†	18.59†	2.43	0.00
Session	15.22†	5.84***	3.57**	5.15***
Gender	0.80	0.66	3.90**	6.05**
BMI	0.25	0.32	1.55	0.02
Age	0.41	39.54†	37.01†	36.46†
Group × session	5.52***	1.06	1.25	2.32*
Predictors of heart rate and RRV, including 3-way interactionb
Group	0.02	0.78	3.21*	0.02
Position	43.26†	18.96†	2.46	0.00
Session	18.23†	6.12***	3.94**	5.52***
Gender	1.61	0.85	4.12**	5.24**
BMI	0.07	0.12	1.04	0.00
Age	0.10	36.76†	34.41†	33.76†
Group × session	4.45**	1.31	1.46	2.52*
Group × gender	5.08**	4.64**	4.88**	3.26*
Session × gender	7.30†	0.88	0.81	1.50
Session × group × gender	0.06	4.29**	1.72	2.44*

Note. bpm = beats per minute; ln = natural log; SDRR = standard deviation of the RR interval; RRV = RR interval variability; BMI = body mass index.

^aFor group, position, gender, BMI, age, df = 1, 513; for session, group × session, df = 2, 513.

^bFor group, position, gender, BMI, age, and group × gender, df = 1, 509; for session, session × group, session × gender and 3-way interactions, df = 2, 509.

*P < .10; **P < .05; ***P < .01; †P < .001.