running

Heart rate variability (HRV) by age and gender

	Age group	5th	25th	50th	75th	95th	Mean ± se
Male	18-30	27	44	53	81	106	60 ± 3
Male	30-39	22	30	40	51	83	43 ± 3
Male	40-49	17	24	32	45	56	34 ± 3
Male	50-59	19	23	30	39	58	33 ± 3
Male	≥ 60	12	22	29	51	153	40 ± 3
Female	18-30	24	34	45	58	78	47 ± 2
Female	30-39	18	29	37	49	80	41 ± 2
Female	40-49	20	25	31	39	64	34 ± 2
Female	50-59	17	21	27	35	67	30 ± 3
Female	≥ 60	16	25	29	36	105	40 ± 5

Source: Geovanini et al. 2020

Resting Heart Rate (RHR) by age and gender

Age/gender	Mean HR	SD
18-20	81.6	14
21-30	80.2	14.8
31-40	78.5	15.1
41-40	75.3	14.3
51-60	73.9	13.5
61-70	73	12.7
71-80	74.2	16.5
---	---	---
Males	73.8	14.5
Females	79.3	14

Source: Avram et al. 2019

Resting Heart Rate classification males

Age	Athlete	Excellent	Good	Above average	Average	Below average	Poor
18	49	56	62	66	70	74	82
26	49	55	62	66	71	75	82
36	50	57	63	67	71	76	83
46	50	58	64	68	72	77	84
56	51	57	62	68	72	76	82
66	50	56	62	66	70	74	80

Resting Heart Rate classification females

Age	Athlete	Excellent	Good	Above average	Average	Below average	Poor
18	49	56	62	66	70	74	82
26	49	55	62	66	71	75	82
36	50	57	63	67	71	76	83
46	50	58	64	68	72	77	84
56	51	57	62	68	72	76	82
66	50	56	62	66	70	74	80

(From values)
Source: Bel Marra Health Marchione, 2017 (This seems to be the original source for this subjective heart rate classification you can find everywhere on the internet.)